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WARNING: BREAKING: REDESIGNED: **Animation System** #4606

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REVIEWED: Reorganized structures for a clearer distinction between "skeleton", "skin" and "skinning" data
ADDED: New structures: `ModelSkeleton`, `ModelAnimPose` (alias `Transform*`)
ADDED: Runtime data `currentPose` and `boneMatrices` to `Model` structure
ADDED: Support animation frames-blending, for timing control
ADDED: Support animations blending, between two animations
REVIEWED: All models animation loading functions
ADDED: `UpdateModelAnimationEx()` for two animations blending
REMOVED: `UpdateModelAnimationBones*()`, simplified API
REVIEWED: Shader attributes/uniforms names for animations, for consistency
REVIEWED: Multiple tweaks on animations loading for consistency between formats
ADDED: example: `models_animation_timing`
ADDED: example: `models_animation_blending`
REVIEWED: example: `models_animation_gpu_skinning`
REVIEWED: example: `models_animation_blend_custom`
REVIEWED: All animated models loading examples
This commit is contained in:
Ray
2026-02-24 01:18:57 +01:00
parent bee3dc6673
commit d4dc038e2e
26 changed files with 1052 additions and 807 deletions
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2
examples/examples_list.txt
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@ -173,7 +173,7 @@ models;models_decals;★★★★;5.6-dev;5.6-dev;2025;2025;"JP Mortiboys";@them
models;models_directional_billboard;★★☆☆;5.6-dev;5.6;2025;2025;"Robin";@RobinsAviary
models;models_animation_blend_custom;★★★★;5.5;5.5;2026;2026;"dmitrii-brand";@dmitrii-brand
models;models_animation_blending;☆☆☆☆;5.5;5.6-dev;2024;2024;"Kirandeep";@Kirandeep-Singh-Khehra
models;models_animation_timming;★★☆☆;5.6;5.6;2026;2026;"Ramon Santamaria";@raysan5
models;models_animation_timing;★★☆☆;5.6;5.6;2026;2026;"Ramon Santamaria";@raysan5
shaders;shaders_ascii_rendering;★★☆☆;5.5;5.6;2025;2025;"Maicon Santana";@maiconpintoabreu
shaders;shaders_basic_lighting;★★★★;3.0;4.2;2019;2025;"Chris Camacho";@chriscamacho
shaders;shaders_model_shader;★★☆☆;1.3;3.7;2014;2025;"Ramon Santamaria";@raysan5

278
examples/models/models_animation_blend_custom.c
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@ -6,7 +6,7 @@
*
* Example originally created with raylib 5.5, last time updated with raylib 5.5
*
* This example demonstrates per-bone animation blending, allowing smooth transitions
* DETAILS: Example demonstrates per-bone animation blending, allowing smooth transitions
* between two animations by interpolating bone transforms. This is useful for:
* - Blending movement animations (walk/run) with action animations (jump/attack)
* - Creating smooth animation transitions
@ -27,8 +27,10 @@
#include "raymath.h"
#include <string.h> // Required for: memcpy()
#include <stdlib.h> // Required for: NULL
#include "rlgl.h" // Requried for: rlUpdateVertexBuffer() (CPU-skinning)
#include <string.h> // Required for: memcpy()
#include <stdlib.h> // Required for: NULL
#if defined(PLATFORM_DESKTOP)
#define GLSL_VERSION 330
@ -40,8 +42,8 @@
// Module Functions Declaration
//------------------------------------------------------------------------------------
static bool IsUpperBodyBone(const char *boneName);
static void BlendModelAnimationsBones(Model *model, ModelAnimation *anim1, int frame1,
ModelAnimation *anim2, int frame2, float blendFactor, bool upperBodyBlend);
static void UpdateModelAnimationBones(Model *model, ModelAnimation *anim1, int frame1,
ModelAnimation *anim2, int frame2, float blend, bool upperBodyBlend);
//------------------------------------------------------------------------------------
// Program main entry point
@ -57,51 +59,40 @@ int main(void)
// Define the camera to look into our 3d world
Camera camera = { 0 };
camera.position = (Vector3){ 5.0f, 5.0f, 5.0f }; // Camera position
camera.target = (Vector3){ 0.0f, 2.0f, 0.0f }; // Camera looking at point
camera.position = (Vector3){ 4.0f, 4.0f, 4.0f }; // Camera position
camera.target = (Vector3){ 0.0f, 1.0f, 0.0f }; // Camera looking at point
camera.up = (Vector3){ 0.0f, 1.0f, 0.0f }; // Camera up vector (rotation towards target)
camera.fovy = 45.0f; // Camera field-of-view Y
camera.projection = CAMERA_PERSPECTIVE; // Camera projection type
// Load gltf model
Model characterModel = LoadModel("resources/models/gltf/greenman.glb");
Model model = LoadModel("resources/models/gltf/greenman.glb");
Vector3 position = { 0.0f, 0.0f, 0.0f }; // Set model position
// Load skinning shader
// WARNING: GPU skinning must be enabled in raylib with a compilation flag,
// if not enabled, CPU skinning will be used instead
Shader skinningShader = LoadShader(TextFormat("resources/shaders/glsl%i/skinning.vs", GLSL_VERSION),
TextFormat("resources/shaders/glsl%i/skinning.fs", GLSL_VERSION));
characterModel.materials[1].shader = skinningShader;
model.materials[1].shader = skinningShader;
// Load gltf model animations
int animsCount = 0;
ModelAnimation *modelAnimations = LoadModelAnimations("resources/models/gltf/greenman.glb", &animsCount);
int animCount = 0;
ModelAnimation *anims = LoadModelAnimations("resources/models/gltf/greenman.glb", &animCount);
// Log all available animations for debugging
TraceLog(LOG_INFO, "Found %d animations:", animsCount);
for (int i = 0; i < animsCount; i++)
{
TraceLog(LOG_INFO, " Animation %d: %s (%d frames)", i, modelAnimations[i].name, modelAnimations[i].keyframeCount);
}
// Use specific indices: walk/move = 2, attack = 3
unsigned int animIndex1 = 2; // Walk/Move animation (index 2)
unsigned int animIndex2 = 3; // Attack animation (index 3)
// Use specific animation indices: 2-walk/move, 3-attack
unsigned int animIndex0 = 2; // Walk/Move animation (index 2)
unsigned int animIndex1 = 3; // Attack animation (index 3)
unsigned int animCurrentFrame0 = 0;
unsigned int animCurrentFrame1 = 0;
unsigned int animCurrentFrame2 = 0;
// Validate indices
if (animIndex1 >= animsCount) animIndex1 = 0;
if (animIndex2 >= animsCount) animIndex2 = (animsCount > 1) ? 1 : 0;
TraceLog(LOG_INFO, "Using Walk (index %d): %s", animIndex1, modelAnimations[animIndex1].name);
TraceLog(LOG_INFO, "Using Attack (index %d): %s", animIndex2, modelAnimations[animIndex2].name);
if (animIndex0 >= animCount) animIndex0 = 0;
if (animIndex1 >= animCount) animIndex1 = (animCount > 1) ? 1 : 0;
Vector3 position = { 0.0f, 0.0f, 0.0f }; // Set model position
bool upperBodyBlend = true; // Toggle: true = upper/lower body blending, false = uniform blending (50/50)
bool upperBodyBlend = true; // Toggle: true = upper/lower body blending, false = uniform blending (50/50)
DisableCursor(); // Limit cursor to relative movement inside the window
SetTargetFPS(60); // Set our game to run at 60 frames-per-second
SetTargetFPS(60); // Set our game to run at 60 frames-per-second
//--------------------------------------------------------------------------------------
// Main game loop
@ -109,24 +100,28 @@ int main(void)
{
// Update
//----------------------------------------------------------------------------------
UpdateCamera(&camera, CAMERA_THIRD_PERSON);
UpdateCamera(&camera, CAMERA_ORBITAL);
// Toggle upper/lower body blending mode (SPACE key)
if (IsKeyPressed(KEY_SPACE)) upperBodyBlend = !upperBodyBlend;
// Update animation frames
ModelAnimation anim1 = modelAnimations[animIndex1];
ModelAnimation anim2 = modelAnimations[animIndex2];
ModelAnimation anim0 = anims[animIndex0];
ModelAnimation anim1 = anims[animIndex1];
animCurrentFrame0 = (animCurrentFrame0 + 1)%anim0.keyframeCount;
animCurrentFrame1 = (animCurrentFrame1 + 1)%anim1.keyframeCount;
animCurrentFrame2 = (animCurrentFrame2 + 1)%anim2.keyframeCount;
// Blend the two animations
characterModel.transform = MatrixTranslate(position.x, position.y, position.z);
// When upperBodyBlend is ON: upper body = attack (1.0), lower body = walk (0.0)
// When upperBodyBlend is OFF: uniform blend at 0.5 (50% walk, 50% attack)
float blendFactor = upperBodyBlend ? 1.0f : 0.5f;
BlendModelAnimationsBones(&characterModel, &anim1, animCurrentFrame1, &anim2, animCurrentFrame2, blendFactor, upperBodyBlend);
float blendFactor = (upperBodyBlend? 1.0f : 0.5f);
UpdateModelAnimationBones(&model, &anim0, animCurrentFrame0,
&anim1, animCurrentFrame1, blendFactor, upperBodyBlend);
// raylib provided animation blending function
//UpdateModelAnimationEx(model, anim0, (float)animCurrentFrame0,
// anim1, (float)animCurrentFrame1, blendFactor);
//----------------------------------------------------------------------------------
// Draw
@ -137,19 +132,18 @@ int main(void)
BeginMode3D(camera);
// Draw character mesh, pose calculation is done in shader (GPU skinning)
DrawMesh(characterModel.meshes[0], characterModel.materials[1], characterModel.transform);
DrawModel(model, position, 1.0f, WHITE);
DrawGrid(10, 1.0f);
EndMode3D();
// Draw UI
DrawText("BONE BLENDING EXAMPLE", 10, 10, 20, DARKGRAY);
DrawText(TextFormat("Walk (Animation 2): %s", anim1.name), 10, 35, 10, GRAY);
DrawText(TextFormat("Attack (Animation 3): %s", anim2.name), 10, 50, 10, GRAY);
DrawText(TextFormat("Mode: %s", upperBodyBlend ? "Upper/Lower Body Blending" : "Uniform Blending"), 10, 65, 10, GRAY);
DrawText("SPACE - Toggle blending mode", 10, GetScreenHeight() - 20, 10, DARKGRAY);
DrawText(TextFormat("ANIM 0: %s", anim0.name), 10, 10, 20, GRAY);
DrawText(TextFormat("ANIM 1: %s", anim1.name), 10, 40, 20, GRAY);
DrawText(TextFormat("[SPACE] Toggle blending mode: %s",
upperBodyBlend? "Upper/Lower Body Blending" : "Uniform Blending"),
10, GetScreenHeight() - 30, 20, DARKGRAY);
EndDrawing();
//----------------------------------------------------------------------------------
@ -157,8 +151,8 @@ int main(void)
// De-Initialization
//--------------------------------------------------------------------------------------
UnloadModelAnimations(modelAnimations, animsCount); // Unload model animation
UnloadModel(characterModel); // Unload model and meshes/material
UnloadModelAnimations(anims, animCount); // Unload model animation
UnloadModel(model); // Unload model and meshes/material
UnloadShader(skinningShader); // Unload GPU skinning shader
CloseWindow(); // Close window and OpenGL context
@ -199,74 +193,138 @@ static bool IsUpperBodyBone(const char *boneName)
}
// Blend two animations per-bone with selective upper/lower body blending
static void BlendModelAnimationsBones(Model *model, ModelAnimation *anim1, int frame1,
ModelAnimation *anim2, int frame2, float blendFactor, bool upperBodyBlend)
static void UpdateModelAnimationBones(Model *model, ModelAnimation *anim0, int frame0,
ModelAnimation *anim1, int frame1, float blend, bool upperBodyBlend)
{
// Validate inputs
if (anim1->boneCount == 0 || anim1->keyframePoses == NULL ||
anim2->boneCount == 0 || anim2->keyframePoses == NULL ||
model->skeleton.boneCount == 0 || model->skeleton.bindPose == NULL)
if ((anim0->boneCount != 0) && (anim0->keyframePoses != NULL) &&
(anim1->boneCount != 0) && (anim1->keyframePoses != NULL) &&
(model->skeleton.boneCount != 0) && (model->skeleton.bindPose != NULL))
{
return;
}
// Clamp blend factor to [0, 1]
blendFactor = fminf(1.0f, fmaxf(0.0f, blendFactor));
// Ensure frame indices are valid
if (frame1 >= anim1->keyframeCount) frame1 = anim1->keyframeCount - 1;
if (frame2 >= anim2->keyframeCount) frame2 = anim2->keyframeCount - 1;
if (frame1 < 0) frame1 = 0;
if (frame2 < 0) frame2 = 0;
// Get bone count (use minimum of all to be safe)
int boneCount = model->skeleton.boneCount;
if (anim1->boneCount < boneCount) boneCount = anim1->boneCount;
if (anim2->boneCount < boneCount) boneCount = anim2->boneCount;
// Blend each bone
for (int boneId = 0; boneId < boneCount; boneId++)
{
// Determine blend factor for this bone
float boneBlendFactor = blendFactor;
// Clamp blend factor to [0, 1]
blend = fminf(1.0f, fmaxf(0.0f, blend));
// If upper body blending is enabled, use different blend factors for upper vs lower body
if (upperBodyBlend)
// Ensure frame indices are valid
if (frame0 >= anim0->keyframeCount) frame0 = anim0->keyframeCount - 1;
if (frame1 >= anim1->keyframeCount) frame1 = anim1->keyframeCount - 1;
if (frame0 < 0) frame0 = 0;
if (frame1 < 0) frame1 = 0;
// Get bone count (use minimum of all to be safe)
int boneCount = model->skeleton.boneCount;
if (anim0->boneCount < boneCount) boneCount = anim0->boneCount;
if (anim1->boneCount < boneCount) boneCount = anim1->boneCount;
// Blend each bone
for (int boneIndex = 0; boneIndex < boneCount; boneIndex++)
{
const char *boneName = model->skeleton.bones[boneId].name;
bool isUpperBody = IsUpperBodyBone(boneName);
// Determine blend factor for this bone
float boneBlendFactor = blend;
// Upper body: use anim2 (attack), Lower body: use anim1 (walk)
// blendFactor = 0.0 means full anim1 (walk), 1.0 means full anim2 (attack)
if (isUpperBody) boneBlendFactor = blendFactor; // Upper body: blend towards anim2 (attack)
else boneBlendFactor = 1.0f - blendFactor; // Lower body: blend towards anim1 (walk) - invert the blend
// If upper body blending is enabled, use different blend factors for upper vs lower body
if (upperBodyBlend)
{
const char *boneName = model->skeleton.bones[boneIndex].name;
bool isUpperBody = IsUpperBodyBone(boneName);
// Upper body: use anim1 (attack), Lower body: use anim0 (walk)
// blend = 0.0 means full anim0 (walk), 1.0 means full anim1 (attack)
if (isUpperBody) boneBlendFactor = blend; // Upper body: blend towards anim1 (attack)
else boneBlendFactor = 1.0f - blend; // Lower body: blend towards anim0 (walk) - invert the blend
}
// Get transforms from both animations
Transform *bindTransform = &model->skeleton.bindPose[boneIndex];
Transform *animTransform0 = &anim0->keyframePoses[frame0][boneIndex];
Transform *animTransform1 = &anim1->keyframePoses[frame1][boneIndex];
// Blend the transforms
Transform blended = { 0 };
blended.translation = Vector3Lerp(animTransform0->translation, animTransform1->translation, boneBlendFactor);
blended.rotation = QuaternionSlerp(animTransform0->rotation, animTransform1->rotation, boneBlendFactor);
blended.scale = Vector3Lerp(animTransform0->scale, animTransform1->scale, boneBlendFactor);
// Convert bind pose to matrix
Matrix bindMatrix = MatrixMultiply(MatrixMultiply(
MatrixScale(bindTransform->scale.x, bindTransform->scale.y, bindTransform->scale.z),
QuaternionToMatrix(bindTransform->rotation)),
MatrixTranslate(bindTransform->translation.x, bindTransform->translation.y, bindTransform->translation.z));
// Convert blended transform to matrix
Matrix blendedMatrix = MatrixMultiply(MatrixMultiply(
MatrixScale(blended.scale.x, blended.scale.y, blended.scale.z),
QuaternionToMatrix(blended.rotation)),
MatrixTranslate(blended.translation.x, blended.translation.y, blended.translation.z));
// Calculate final bone matrix (similar to UpdateModelAnimationBones)
model->boneMatrices[boneIndex] = MatrixMultiply(MatrixInvert(bindMatrix), blendedMatrix);
}
// CPU skinning, updates CPU buffers and uploads them to GPU (if available)
// NOTE: Fallback in case GPU skinning is not supported or enabled
for (int m = 0; m < model->meshCount; m++)
{
Mesh mesh = model->meshes[m];
Vector3 animVertex = { 0 };
Vector3 animNormal = { 0 };
const int vertexValuesCount = mesh.vertexCount*3;
int boneIndex = 0;
int boneCounter = 0;
float boneWeight = 0.0f;
bool bufferUpdateRequired = false; // Flag to check when anim vertex information is updated
// Skip if missing bone data or missing anim buffers initialization
if ((mesh.boneWeights == NULL) || (mesh.boneIndices == NULL) ||
(mesh.animVertices == NULL) || (mesh.animNormals == NULL)) continue;
for (int vCounter = 0; vCounter < vertexValuesCount; vCounter += 3)
{
mesh.animVertices[vCounter] = 0;
mesh.animVertices[vCounter + 1] = 0;
mesh.animVertices[vCounter + 2] = 0;
if (mesh.animNormals != NULL)
{
mesh.animNormals[vCounter] = 0;
mesh.animNormals[vCounter + 1] = 0;
mesh.animNormals[vCounter + 2] = 0;
}
// Iterates over 4 bones per vertex
for (int j = 0; j < 4; j++, boneCounter++)
{
boneWeight = mesh.boneWeights[boneCounter];
boneIndex = mesh.boneIndices[boneCounter];
// Early stop when no transformation will be applied
if (boneWeight == 0.0f) continue;
animVertex = (Vector3){ mesh.vertices[vCounter], mesh.vertices[vCounter + 1], mesh.vertices[vCounter + 2] };
animVertex = Vector3Transform(animVertex, model->boneMatrices[boneIndex]);
mesh.animVertices[vCounter] += animVertex.x*boneWeight;
mesh.animVertices[vCounter + 1] += animVertex.y*boneWeight;
mesh.animVertices[vCounter + 2] += animVertex.z*boneWeight;
bufferUpdateRequired = true;
// Normals processing
// NOTE: We use meshes.baseNormals (default normal) to calculate meshes.normals (animated normals)
if ((mesh.normals != NULL) && (mesh.animNormals != NULL ))
{
animNormal = (Vector3){ mesh.normals[vCounter], mesh.normals[vCounter + 1], mesh.normals[vCounter + 2] };
animNormal = Vector3Transform(animNormal, MatrixTranspose(MatrixInvert(model->boneMatrices[boneIndex])));
mesh.animNormals[vCounter] += animNormal.x*boneWeight;
mesh.animNormals[vCounter + 1] += animNormal.y*boneWeight;
mesh.animNormals[vCounter + 2] += animNormal.z*boneWeight;
}
}
}
if (bufferUpdateRequired)
{
// Update GPU vertex buffers with updated data (position + normals)
rlUpdateVertexBuffer(mesh.vboId[SHADER_LOC_VERTEX_POSITION], mesh.animVertices, mesh.vertexCount*3*sizeof(float), 0);
if (mesh.normals != NULL) rlUpdateVertexBuffer(mesh.vboId[SHADER_LOC_VERTEX_NORMAL], mesh.animNormals, mesh.vertexCount*3*sizeof(float), 0);
}
}
// Get transforms from both animations
Transform *bindTransform = &model->skeleton.bindPose[boneId];
Transform *anim1Transform = &anim1->keyframePoses[frame1][boneId];
Transform *anim2Transform = &anim2->keyframePoses[frame2][boneId];
// Blend the transforms
Transform blended = { 0 };
blended.translation = Vector3Lerp(anim1Transform->translation, anim2Transform->translation, boneBlendFactor);
blended.rotation = QuaternionSlerp(anim1Transform->rotation, anim2Transform->rotation, boneBlendFactor);
blended.scale = Vector3Lerp(anim1Transform->scale, anim2Transform->scale, boneBlendFactor);
// Convert bind pose to matrix
Matrix bindMatrix = MatrixMultiply(MatrixMultiply(
MatrixScale(bindTransform->scale.x, bindTransform->scale.y, bindTransform->scale.z),
QuaternionToMatrix(bindTransform->rotation)),
MatrixTranslate(bindTransform->translation.x, bindTransform->translation.y, bindTransform->translation.z));
// Convert blended transform to matrix
Matrix blendedMatrix = MatrixMultiply(MatrixMultiply(
MatrixScale(blended.scale.x, blended.scale.y, blended.scale.z),
QuaternionToMatrix(blended.rotation)),
MatrixTranslate(blended.translation.x, blended.translation.y, blended.translation.z));
// Calculate final bone matrix (similar to UpdateModelAnimationBones)
model->boneMatrices[boneId] = MatrixMultiply(MatrixInvert(bindMatrix), blendedMatrix);
}
}

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207
examples/models/models_animation_blending.c
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@ -21,7 +21,8 @@
#include "raylib.h"
#define clamp(x,a,b) ((x < a)? a : (x > b)? b : x)
#define RAYGUI_IMPLEMENTATION
#include "raygui.h" // Required for: UI controls
#if defined(PLATFORM_DESKTOP)
#define GLSL_VERSION 330
@ -43,31 +44,58 @@ int main(void)
// Define the camera to look into our 3d world
Camera camera = { 0 };
camera.position = (Vector3){ 8.0f, 8.0f, 8.0f }; // Camera position
camera.position = (Vector3){ 6.0f, 6.0f, 6.0f }; // Camera position
camera.target = (Vector3){ 0.0f, 2.0f, 0.0f }; // Camera looking at point
camera.up = (Vector3){ 0.0f, 1.0f, 0.0f }; // Camera up vector (rotation towards target)
camera.fovy = 45.0f; // Camera field-of-view Y
camera.projection = CAMERA_PERSPECTIVE; // Camera projection type
// Load model
Model characterModel = LoadModel("resources/models/gltf/robot.glb"); // Load character model
Model model = LoadModel("resources/models/gltf/robot.glb"); // Load character model
Vector3 position = { 0.0f, 0.0f, 0.0f }; // Set model world position
// Load skinning shader
// WARNING: It requires SUPPORT_GPU_SKINNING enabled on raylib (disabled by default)
Shader skinningShader = LoadShader(TextFormat("resources/shaders/glsl%i/skinning.vs", GLSL_VERSION),
TextFormat("resources/shaders/glsl%i/skinning.fs", GLSL_VERSION));
// Assign skinning shader to all materials shaders
for (int i = 0; i < characterModel.materialCount; i++) characterModel.materials[i].shader = skinningShader;
//for (int i = 0; i < model.materialCount; i++) model.materials[i].shader = skinningShader;
// Load model animations
int animsCount = 0;
ModelAnimation *modelAnimations = LoadModelAnimations("resources/models/gltf/robot.glb", &animsCount);
int animCount = 0;
ModelAnimation *anims = LoadModelAnimations("resources/models/gltf/robot.glb", &animCount);
// Define animation variables
unsigned int animIndex0 = 0;
unsigned int animIndex1 = 0;
float animCurrentFrame = 0;
float blendFactor = 0.5f;
// Animation playing variables
// NOTE: Two animations are played with a smooth transition between them
int currentAnimPlaying = 0; // Current animation playing (0 o 1)
int nextAnimToPlay = 1; // Next animation to play (to transition)
bool animTransition = false; // Flag to register anim transition state
int animIndex0 = 10; // Current animation playing (walking)
float animCurrentFrame0 = 0.0f; // Current animation frame (supporting interpolated frames)
float animFrameSpeed0 = 0.5f; // Current animation play speed
int animIndex1 = 6; // Next animation to play (running)
float animCurrentFrame1 = 0.0f; // Next animation frame (supporting interpolated frames)
float animFrameSpeed1 = 0.5f; // Next animation play speed
float animBlendFactor = 0.0f; // Blend factor from anim0[frame0] --> anim1[frame1], [0.0f..1.0f]
// NOTE: 0.0f results in full anim0[] and 1.0f in full anim1[]
float animBlendTime = 2.0f; // Time to blend from one playing animation to another (in seconds)
float animBlendTimeCounter = 0.0f; // Time counter (delta time)
bool animPause = false; // Pause animation
// UI required variables
char *animNames[64] = { 0 }; // Pointers to animation names for dropdown box
for (int i = 0; i < animCount; i++) animNames[i] = anims[i].name;
bool dropdownEditMode0 = false;
bool dropdownEditMode1 = false;
float animFrameProgress0 = 0.0f;
float animFrameProgress1 = 0.0f;
float animBlendProgress = 0.0f;
SetTargetFPS(60); // Set our game to run at 60 frames-per-second
//--------------------------------------------------------------------------------------
@ -79,23 +107,100 @@ int main(void)
//----------------------------------------------------------------------------------
UpdateCamera(&camera, CAMERA_ORBITAL);
// Select current animation
if (IsKeyPressed(KEY_T)) animIndex0 = (animIndex0 + 1)%animsCount;
else if (IsKeyPressed(KEY_G)) animIndex0 = (animIndex0 + animsCount - 1)%animsCount;
if (IsKeyPressed(KEY_Y)) animIndex1 = (animIndex1 + 1)%animsCount;
else if (IsKeyPressed(KEY_H)) animIndex1 = (animIndex1 + animsCount - 1)%animsCount;
// Select blend factor
if (IsKeyPressed(KEY_U)) blendFactor = clamp(blendFactor - 0.1, 0.0f, 1.0f);
else if (IsKeyPressed(KEY_J)) blendFactor = clamp(blendFactor + 0.1, 0.0f, 1.0f);
if (IsKeyPressed(KEY_P)) animPause = !animPause;
// Update animation
animCurrentFrame += 0.2f;
if (!animPause)
{
// Start transition from anim0[] to anim1[]
if (IsKeyPressed(KEY_SPACE) && !animTransition)
{
if (currentAnimPlaying == 0)
{
// Transition anim0 --> anim1
nextAnimToPlay = 1;
animCurrentFrame1 = 0.0f;
}
else
{
// Transition anim1 --> anim0
nextAnimToPlay = 0;
animCurrentFrame0 = 0.0f;
}
// Update bones
// Note: Same animation frame index is used below. By default it loops both animations
UpdateModelAnimationEx(characterModel, modelAnimations[animIndex0], animCurrentFrame,
modelAnimations[animIndex1], animCurrentFrame, blendFactor);
// Set animation transition
animTransition = true;
animBlendTimeCounter = 0.0f;
animBlendFactor = 0.0f;
}
if (animTransition)
{
// Playing anim0 and anim1 at the same time
animCurrentFrame0 += animFrameSpeed0;
if (animCurrentFrame0 >= anims[animIndex0].keyframeCount) animCurrentFrame0 = 0.0f;
animCurrentFrame1 += animFrameSpeed1;
if (animCurrentFrame1 >= anims[animIndex1].keyframeCount) animCurrentFrame1 = 0.0f;
// Increment blend factor over time to transition from anim0 --> anim1 over time
// NOTE: Time blending could be other than linear, using some easing
animBlendFactor = animBlendTimeCounter/animBlendTime;
animBlendTimeCounter += GetFrameTime();
animBlendProgress = animBlendFactor;
// Update model with animations blending
if (nextAnimToPlay == 1)
{
// Blend anim0 --> anim1
UpdateModelAnimationEx(model, anims[animIndex0], animCurrentFrame0,
anims[animIndex1], animCurrentFrame1, animBlendFactor);
}
else
{
// Blend anim1 --> anim0
UpdateModelAnimationEx(model, anims[animIndex1], animCurrentFrame1,
anims[animIndex0], animCurrentFrame0, animBlendFactor);
}
// Check if transition completed
if (animBlendFactor > 1.0f)
{
// Reset frame states
if (currentAnimPlaying == 0) animCurrentFrame0 = 0.0f;
else if (currentAnimPlaying == 1) animCurrentFrame1 = 0.0f;
currentAnimPlaying = nextAnimToPlay; // Update current animation playing
animBlendFactor = 0.0f; // Reset blend factor
animTransition = false; // Exit transition mode
animBlendTimeCounter = 0.0f;
}
}
else
{
// Play only one anim, the current one
if (currentAnimPlaying == 0)
{
// Playing anim0 at defined speed
animCurrentFrame0 += animFrameSpeed0;
if (animCurrentFrame0 >= anims[animIndex0].keyframeCount) animCurrentFrame0 = 0.0f;
UpdateModelAnimation(model, anims[animIndex0], animCurrentFrame0);
//UpdateModelAnimationEx(model, anims[animIndex0], animCurrentFrame0,
// anims[animIndex1], animCurrentFrame1, 0.0f);
}
else if (currentAnimPlaying == 1)
{
// Playing anim1 at defined speed
animCurrentFrame1 += animFrameSpeed1;
if (animCurrentFrame1 >= anims[animIndex1].keyframeCount) animCurrentFrame1 = 0.0f;
UpdateModelAnimation(model, anims[animIndex1], animCurrentFrame1);
//UpdateModelAnimationEx(model, anims[animIndex0], animCurrentFrame0,
// anims[animIndex1], animCurrentFrame1, 1.0f);
}
}
}
// Update progress bars values with current frame for each animation
float animFrameProgress0 = animCurrentFrame0;
float animFrameProgress1 = animCurrentFrame1;
//----------------------------------------------------------------------------------
// Draw
@ -106,16 +211,47 @@ int main(void)
BeginMode3D(camera);
DrawModel(characterModel, (Vector3){0.0f, 0.0f, 0.0f}, 1.0f, WHITE);
DrawModel(model, position, 1.0f, WHITE); // Draw animated model
DrawGrid(10, 1.0f);
EndMode3D();
DrawText("Use the U/J to adjust blend factor", 10, 10, 20, GRAY);
DrawText("Use the T/G to switch first animation", 10, 30, 20, GRAY);
DrawText("Use the Y/H to switch second animation", 10, 50, 20, GRAY);
DrawText(TextFormat("Animations: %s, %s", modelAnimations[animIndex0].name, modelAnimations[animIndex1].name), 10, 70, 20, BLACK);
DrawText(TextFormat("Blend Factor: %f", blendFactor), 10, 86, 20, BLACK);
if (animTransition) DrawText("ANIM TRANSITION BLENDING!", 170, 50, 30, BLUE);
// Draw UI elements
//---------------------------------------------------------------------------------------------
// Draw animation selectors for blending transition
// NOTE: Transition does not start until requested
GuiSetStyle(DROPDOWNBOX, DROPDOWN_ITEMS_SPACING, 1);
if (GuiDropdownBox((Rectangle){ 10, 10, 160, 24 }, TextJoin(animNames, animCount, ";"),
&animIndex0, dropdownEditMode0)) dropdownEditMode0 = !dropdownEditMode0;
// Blending process progress bar
if (nextAnimToPlay == 1) GuiSetStyle(PROGRESSBAR, PROGRESS_SIDE, 0); // Left-->Right
else GuiSetStyle(PROGRESSBAR, PROGRESS_SIDE, 1); // Right-->Left
GuiProgressBar((Rectangle){ 180, 14, 440, 16 }, NULL, NULL, &animBlendProgress, 0.0f, 1.0f);
GuiSetStyle(PROGRESSBAR, PROGRESS_SIDE, 0); // Reset to Left-->Right
if (GuiDropdownBox((Rectangle){ GetScreenWidth() - 170, 10, 160, 24 }, TextJoin(animNames, animCount, ";"),
&animIndex1, dropdownEditMode1)) dropdownEditMode1 = !dropdownEditMode1;
// Draw playing timeline with keyframes for anim0[]
GuiProgressBar((Rectangle){ 60, GetScreenHeight() - 60, GetScreenWidth() - 180, 20 }, "ANIM 0",
TextFormat("FRAME: %.2f / %i", animFrameProgress0, anims[animIndex0].keyframeCount),
&animFrameProgress0, 0.0f, (float)anims[animIndex0].keyframeCount);
for (int i = 0; i < anims[animIndex0].keyframeCount; i++)
DrawRectangle(60 + ((float)(GetScreenWidth() - 180)/(float)anims[animIndex0].keyframeCount)*(float)i,
GetScreenHeight() - 60, 1, 20, BLUE);
// Draw playing timeline with keyframes for anim1[]
GuiProgressBar((Rectangle){ 60, GetScreenHeight() - 30, GetScreenWidth() - 180, 20 }, "ANIM 1",
TextFormat("FRAME: %.2f / %i", animFrameProgress1, anims[animIndex1].keyframeCount),
&animFrameProgress1, 0.0f, (float)anims[animIndex1].keyframeCount);
for (int i = 0; i < anims[animIndex1].keyframeCount; i++)
DrawRectangle(60 + ((float)(GetScreenWidth() - 180)/(float)anims[animIndex1].keyframeCount)*(float)i,
GetScreenHeight() - 30, 1, 20, BLUE);
//---------------------------------------------------------------------------------------------
EndDrawing();
//----------------------------------------------------------------------------------
@ -123,9 +259,8 @@ int main(void)
// De-Initialization
//--------------------------------------------------------------------------------------
UnloadModelAnimations(modelAnimations, animsCount); // Unload model animation
UnloadModel(characterModel); // Unload model and meshes/material
UnloadModelAnimations(anims, animCount); // Unload model animation
UnloadModel(model); // Unload model and meshes/material
UnloadShader(skinningShader); // Unload GPU skinning shader
CloseWindow(); // Close window and OpenGL context

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1
examples/models/models_animation_gpu_skinning.c
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@ -10,7 +10,6 @@
*
* WARNING: GPU skinning must be enabled in raylib with a compilation flag,
* if not enabled, CPU skinning will be used instead
* NOTE: Due to limitations in the Apple OpenGL driver, this feature does not work on MacOS
*
* Example licensed under an unmodified zlib/libpng license, which is an OSI-certified,
* BSD-like license that allows static linking with closed source software

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65
examples/models/models_animation_timming.c → examples/models/models_animation_timing.c
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@ -1,6 +1,6 @@
/*******************************************************************************************
*
* raylib [models] example - animation timming
* raylib [models] example - animation timing
*
* Example complexity rating: [★★☆☆] 2/4
*
@ -16,7 +16,7 @@
#include "raylib.h"
#define RAYGUI_IMPLEMENTATION
#include "raygui.h" // Required for: UI controls
#include "raygui.h" // Required for: UI controls
//------------------------------------------------------------------------------------
// Program main entry point
@ -28,7 +28,7 @@ int main(void)
const int screenWidth = 800;
const int screenHeight = 450;
InitWindow(screenWidth, screenHeight, "raylib [models] example - animation timming");
InitWindow(screenWidth, screenHeight, "raylib [models] example - animation timing");
// Define the camera to look into our 3d world
Camera camera = { 0 };
@ -43,13 +43,21 @@ int main(void)
Vector3 position = { 0.0f, 0.0f, 0.0f }; // Set model world position
// Load model animations
int animsCount = 0;
ModelAnimation *modelAnimations = LoadModelAnimations("resources/models/gltf/robot.glb", &animsCount);
int animCount = 0;
ModelAnimation *anims = LoadModelAnimations("resources/models/gltf/robot.glb", &animCount);
// Animation playing variables
unsigned int animIndex = 0; // Current animation playing
int animIndex = 10; // Current animation playing
float animCurrentFrame = 0.0f; // Current animation frame (supporting interpolated frames)
float animFrameSpeed = 0.1f; // Animation play speed
float animFrameSpeed = 0.5f; // Animation play speed
bool animPause = false; // Pause animation
// UI required variables
char *animNames[64] = { 0 };
for (int i = 0; i < animCount; i++) animNames[i] = anims[i].name;
bool dropdownEditMode = false;
float animFrameProgress = 0.0f;
SetTargetFPS(60); // Set our game to run at 60 frames-per-second
//--------------------------------------------------------------------------------------
@ -61,17 +69,20 @@ int main(void)
//----------------------------------------------------------------------------------
UpdateCamera(&camera, CAMERA_ORBITAL);
// Select current animation
if (IsMouseButtonPressed(MOUSE_BUTTON_RIGHT)) animIndex = (animIndex + 1)%animsCount;
else if (IsMouseButtonPressed(MOUSE_BUTTON_LEFT)) animIndex = (animIndex + animsCount - 1)%animsCount;
if (IsKeyPressed(KEY_P)) animPause = !animPause;
// Select animation playing speed
if (IsKeyPressed(KEY_RIGHT)) animFrameSpeed += 0.1f;
else if (IsKeyPressed(KEY_LEFT)) animFrameSpeed -= 0.1f;
if (!animPause && (animIndex < animCount))
{
// Update model animation
animCurrentFrame += animFrameSpeed;
if (animCurrentFrame >= anims[animIndex].keyframeCount) animCurrentFrame = 0.0f;
UpdateModelAnimation(model, anims[animIndex], animCurrentFrame);
}
// Update model animation
animCurrentFrame += animFrameSpeed;
UpdateModelAnimation(model, modelAnimations[animIndex], animCurrentFrame);
// NOTE: Animation and playing speed selected through UI
// Update progressbar value with current frame
animFrameProgress = animCurrentFrame;
//----------------------------------------------------------------------------------
// Draw
@ -88,13 +99,22 @@ int main(void)
EndMode3D();
// Draw UI
//GuiDropdownBox((Rectangle){ 10, 20, 240, 30 }, "text", &animIndex, editMode);
// Draw UI, select anim and playing speed
GuiSetStyle(DROPDOWNBOX, DROPDOWN_ITEMS_SPACING, 1);
if (GuiDropdownBox((Rectangle){ 10, 10, 140, 24 }, TextJoin(animNames, animCount, ";"),
&animIndex, dropdownEditMode)) dropdownEditMode = !dropdownEditMode;
DrawText(TextFormat("FRAME SPEED: x%.1f", animFrameSpeed), 10, 40, 20, RED);
GuiSlider((Rectangle){ 260, 10, 500, 24 }, "FRAME SPEED: ", TextFormat("x%.1f", animFrameSpeed),
&animFrameSpeed, 0.1f, 2.0f);
DrawText("Use the LEFT/RIGHT mouse buttons to switch animation", 10, 10, 20, GRAY);
DrawText(TextFormat("Animation: %s", modelAnimations[animIndex].name), 10, GetScreenHeight() - 20, 10, DARKGRAY);
// Draw playing timeline with keyframes
GuiLabel((Rectangle){ 10, GetScreenHeight() - 64, GetScreenWidth() - 20, 24 },
TextFormat("CURRENT FRAME: %.2f / %i", animFrameProgress, anims[animIndex].keyframeCount));
GuiProgressBar((Rectangle){ 10, GetScreenHeight() - 40, GetScreenWidth() - 20, 24 }, NULL, NULL,
&animFrameProgress, 0.0f, (float)anims[animIndex].keyframeCount);
for (int i = 0; i < anims[animIndex].keyframeCount; i++)
DrawRectangle(10 + ((float)(GetScreenWidth() - 20)/(float)anims[animIndex].keyframeCount)*(float)i,
GetScreenHeight() - 40, 1, 24, BLUE);
EndDrawing();
//----------------------------------------------------------------------------------
@ -102,6 +122,7 @@ int main(void)
// De-Initialization
//--------------------------------------------------------------------------------------
UnloadModelAnimations(anims, animCount); // Unload model animation
UnloadModel(model); // Unload model and meshes/material
CloseWindow(); // Close window and OpenGL context
@ -110,5 +131,3 @@ int main(void)
return 0;
}

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21
examples/models/models_loading.c
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@ -7,11 +7,11 @@
* NOTE: raylib supports multiple models file formats:
*
* - OBJ > Text file format. Must include vertex position-texcoords-normals information,
* if files references some .mtl materials file, it will be loaded (or try to)
* - GLTF > Text/binary file format. Includes lot of information and it could
* also reference external files, raylib will try loading mesh and materials data
* if .obj references some .mtl materials file, it will be tried to be loaded
* - GLTF/GLB > Text/binary file formats. Includes lot of information and it could
* also reference external files, mesh and materials data will be tried to be loaded
* - IQM > Binary file format. Includes mesh vertex data but also animation data,
* raylib can load .iqm animations
* meshes and animation data can be loaded
* - VOX > Binary file format. MagikaVoxel mesh format:
* https://github.com/ephtracy/voxel-model/blob/master/MagicaVoxel-file-format-vox.txt
* - M3D > Binary file format. Model 3D format:
@ -43,10 +43,10 @@ int main(void)
// Define the camera to look into our 3d world
Camera camera = { 0 };
camera.position = (Vector3){ 50.0f, 50.0f, 50.0f }; // Camera position
camera.target = (Vector3){ 0.0f, 10.0f, 0.0f }; // Camera looking at point
camera.target = (Vector3){ 0.0f, 12.0f, 0.0f }; // Camera looking at point
camera.up = (Vector3){ 0.0f, 1.0f, 0.0f }; // Camera up vector (rotation towards target)
camera.fovy = 45.0f; // Camera field-of-view Y
camera.projection = CAMERA_PERSPECTIVE; // Camera mode type
camera.projection = CAMERA_PERSPECTIVE; // Camera mode type
Model model = LoadModel("resources/models/obj/castle.obj"); // Load model
Texture2D texture = LoadTexture("resources/models/obj/castle_diffuse.png"); // Load model texture
@ -61,8 +61,6 @@ int main(void)
bool selected = false; // Selected object flag
DisableCursor(); // Limit cursor to relative movement inside the window
SetTargetFPS(60); // Set our game to run at 60 frames-per-second
//--------------------------------------------------------------------------------------
@ -71,7 +69,7 @@ int main(void)
{
// Update
//----------------------------------------------------------------------------------
UpdateCamera(&camera, CAMERA_FIRST_PERSON);
UpdateCamera(&camera, CAMERA_ORBITAL);
// Load new models/textures on drag&drop
if (IsFileDropped())
@ -93,7 +91,10 @@ int main(void)
bounds = GetMeshBoundingBox(model.meshes[0]);
// TODO: Move camera position from target enough distance to visualize model properly
// Move camera position from target enough distance to visualize model properly
camera.position.x = bounds.max.x + 10.0f;
camera.position.y = bounds.max.y + 10.0f;
camera.position.z = bounds.max.z + 10.0f;
}
else if (IsFileExtension(droppedFiles.paths[0], ".png")) // Texture file formats supported
{

37
examples/models/models_loading_gltf.c
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@ -42,15 +42,17 @@ int main(void)
camera.fovy = 45.0f; // Camera field-of-view Y
camera.projection = CAMERA_PERSPECTIVE; // Camera projection type
// Load gltf model
// Load model
Model model = LoadModel("resources/models/gltf/robot.glb");
Vector3 position = { 0.0f, 0.0f, 0.0f }; // Set model position
Vector3 position = { 0.0f, 0.0f, 0.0f }; // Set model world position
// Load gltf model animations
int animsCount = 0;
unsigned int animIndex = 0;
unsigned int animCurrentFrame = 0;
ModelAnimation *modelAnimations = LoadModelAnimations("resources/models/gltf/robot.glb", &animsCount);
// Load model animations
int animCount = 0;
ModelAnimation *anims = LoadModelAnimations("resources/models/gltf/robot.glb", &animCount);
// Animation playing variables
unsigned int animIndex = 0; // Current animation playing
unsigned int animCurrentFrame = 0; // Current animation frame
SetTargetFPS(60); // Set our game to run at 60 frames-per-second
//--------------------------------------------------------------------------------------
@ -63,13 +65,12 @@ int main(void)
UpdateCamera(&camera, CAMERA_ORBITAL);
// Select current animation
if (IsMouseButtonPressed(MOUSE_BUTTON_RIGHT)) animIndex = (animIndex + 1)%animsCount;
else if (IsMouseButtonPressed(MOUSE_BUTTON_LEFT)) animIndex = (animIndex + animsCount - 1)%animsCount;
if (IsKeyPressed(KEY_RIGHT)) animIndex = (animIndex + 1)%animCount;
else if (IsKeyPressed(KEY_LEFT)) animIndex = (animIndex + animCount - 1)%animCount;
// Update model animation
ModelAnimation anim = modelAnimations[animIndex];
animCurrentFrame = (animCurrentFrame + 1)%anim.frameCount;
UpdateModelAnimation(model, anim, animCurrentFrame);
animCurrentFrame = (animCurrentFrame + 1)%anims[animIndex].keyframeCount;
UpdateModelAnimation(model, anims[animIndex], (float)animCurrentFrame);
//----------------------------------------------------------------------------------
// Draw
@ -79,12 +80,15 @@ int main(void)
ClearBackground(RAYWHITE);
BeginMode3D(camera);
DrawModel(model, position, 1.0f, WHITE); // Draw animated model
DrawModel(model, position, 1.0f, WHITE);
DrawGrid(10, 1.0f);
EndMode3D();
DrawText("Use the LEFT/RIGHT mouse buttons to switch animation", 10, 10, 20, GRAY);
DrawText(TextFormat("Animation: %s", anim.name), 10, GetScreenHeight() - 20, 10, DARKGRAY);
DrawText(TextFormat("Current animation: %s", anims[animIndex].name), 10, 40, 20, MAROON);
DrawText("Use the LEFT/RIGHT keys to switch animation", 10, 10, 20, GRAY);
EndDrawing();
//----------------------------------------------------------------------------------
@ -92,7 +96,8 @@ int main(void)
// De-Initialization
//--------------------------------------------------------------------------------------
UnloadModel(model); // Unload model and meshes/material
UnloadModelAnimations(anims, animCount); // Unload model animations data
UnloadModel(model); // Unload model
CloseWindow(); // Close window and OpenGL context
//--------------------------------------------------------------------------------------

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46
examples/models/models_loading_iqm.c
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@ -8,17 +8,15 @@
*
* Example contributed by Culacant (@culacant) and reviewed by Ramon Santamaria (@raysan5)
*
* NOTES: To export an IQM model from blender, make sure it is not posed, the vertices need
* to be in the same position as they would be in edit mode and the scale of the models is
* set to 0; scaling can be set from the export menu
*
* Example licensed under an unmodified zlib/libpng license, which is an OSI-certified,
* BSD-like license that allows static linking with closed source software
*
* Copyright (c) 2019-2025 Culacant (@culacant) and Ramon Santamaria (@raysan5)
*
********************************************************************************************
*
* NOTE: To export a model from blender, make sure it is not posed, the vertices need to be
* in the same position as they would be in edit mode and the scale of your models is
* set to 0. Scaling can be done from the export menu
*
********************************************************************************************/
#include "raylib.h"
@ -38,7 +36,7 @@ int main(void)
// Define the camera to look into our 3d world
Camera camera = { 0 };
camera.position = (Vector3){ 10.0f, 10.0f, 10.0f }; // Camera position
camera.target = (Vector3){ 0.0f, 0.0f, 0.0f }; // Camera looking at point
camera.target = (Vector3){ 0.0f, 4.0f, 0.0f }; // Camera looking at point
camera.up = (Vector3){ 0.0f, 1.0f, 0.0f }; // Camera up vector (rotation towards target)
camera.fovy = 45.0f; // Camera field-of-view Y
camera.projection = CAMERA_PERSPECTIVE; // Camera mode type
@ -46,15 +44,16 @@ int main(void)
Model model = LoadModel("resources/models/iqm/guy.iqm"); // Load the animated model mesh and basic data
Texture2D texture = LoadTexture("resources/models/iqm/guytex.png"); // Load model texture and set material
SetMaterialTexture(&model.materials[0], MATERIAL_MAP_DIFFUSE, texture); // Set model material map texture
Vector3 position = { 0.0f, 0.0f, 0.0f }; // Set model position
Vector3 position = { 0.0f, 0.0f, 0.0f }; // Set model position
// Load animation data
int animsCount = 0;
ModelAnimation *anims = LoadModelAnimations("resources/models/iqm/guyanim.iqm", &animsCount);
float animFrameCounter = 0;
int animCount = 0;
ModelAnimation *anims = LoadModelAnimations("resources/models/iqm/guyanim.iqm", &animCount);
// Animation playing variables
unsigned int animIndex = 0; // Current animation playing
float animCurrentFrame = 0.0f; // Current animation frame (supporting interpolated frames)
DisableCursor(); // Catch cursor
SetTargetFPS(60); // Set our game to run at 60 frames-per-second
//--------------------------------------------------------------------------------------
@ -66,9 +65,9 @@ int main(void)
UpdateCamera(&camera, CAMERA_ORBITAL);
// Play animation when spacebar is held down
animFrameCounter += 1.0f;
UpdateModelAnimation(model, anims[0], animFrameCounter);
if (animFrameCounter >= anims[0].keyframeCount) animFrameCounter = 0;
animCurrentFrame += 1.0f;
UpdateModelAnimation(model, anims[0], animCurrentFrame);
if (animCurrentFrame >= anims[0].keyframeCount) animCurrentFrame = 0;
//----------------------------------------------------------------------------------
// Draw
@ -81,16 +80,11 @@ int main(void)
DrawModelEx(model, position, (Vector3){ 1.0f, 0.0f, 0.0f }, -90.0f, (Vector3){ 1.0f, 1.0f, 1.0f }, WHITE);
for (int i = 0; i < model.skeleton.boneCount; i++)
{
//DrawCube(anims[0].keyframePoses[animFrameCounter][i].translation, 0.2f, 0.2f, 0.2f, RED);
}
DrawGrid(10, 1.0f); // Draw a grid
DrawGrid(10, 1.0f);
EndMode3D();
DrawText("PRESS SPACE to PLAY MODEL ANIMATION", 10, 10, 20, MAROON);
DrawText(TextFormat("Current animation: %s", anims[animIndex].name), 10, 10, 20, MAROON);
DrawText("(c) Guy IQM 3D model by @culacant", screenWidth - 200, screenHeight - 20, 10, GRAY);
EndDrawing();
@ -99,9 +93,9 @@ int main(void)
// De-Initialization
//--------------------------------------------------------------------------------------
UnloadTexture(texture); // Unload texture
UnloadModelAnimations(anims, animsCount); // Unload model animations data
UnloadModel(model); // Unload model
UnloadTexture(texture); // Unload texture
UnloadModelAnimations(anims, animCount); // Unload model animations data
UnloadModel(model); // Unload model
CloseWindow(); // Close window and OpenGL context
//--------------------------------------------------------------------------------------

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132
examples/models/models_loading_m3d.c
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@ -21,6 +21,8 @@
#include "raylib.h"
static void DrawModelSkeleton(ModelSkeleton skeleton, ModelAnimPose pose, float scale, Color color);
//------------------------------------------------------------------------------------
// Program main entry point
//------------------------------------------------------------------------------------
@ -41,22 +43,17 @@ int main(void)
camera.fovy = 45.0f; // Camera field-of-view Y
camera.projection = CAMERA_PERSPECTIVE; // Camera projection type
Vector3 position = { 0.0f, 0.0f, 0.0f }; // Set model position
char modelFileName[128] = "resources/models/m3d/cesium_man.m3d";
bool drawMesh = 1;
bool drawSkeleton = 1;
bool animPlaying = false; // Store anim state, what to draw
// Load model
Model model = LoadModel(modelFileName); // Load the bind-pose model mesh and basic data
Model model = LoadModel("resources/models/m3d/cesium_man.m3d"); // Load the animated model mesh and basic data
Vector3 position = { 0.0f, 0.0f, 0.0f }; // Set model position
// Load animations
int animsCount = 0;
int animFrameCounter = 0, animId = 0;
ModelAnimation *anims = LoadModelAnimations(modelFileName, &animsCount); // Load skeletal animation data
// Load animation data
int animCount = 0;
ModelAnimation *anims = LoadModelAnimations("resources/models/m3d/cesium_man.m3d", &animCount);
DisableCursor(); // Limit cursor to relative movement inside the window
// Animation playing variables
unsigned int animIndex = 0; // Current animation playing
float animCurrentFrame = 0.0f; // Current animation frame (supporting interpolated frames)
SetTargetFPS(60); // Set our game to run at 60 frames-per-second
//--------------------------------------------------------------------------------------
@ -66,38 +63,16 @@ int main(void)
{
// Update
//----------------------------------------------------------------------------------
UpdateCamera(&camera, CAMERA_FIRST_PERSON);
UpdateCamera(&camera, CAMERA_ORBITAL);
if (animsCount)
{
// Play animation when spacebar is held down (or step one frame with N)
if (IsKeyDown(KEY_SPACE) || IsKeyPressed(KEY_N))
{
animFrameCounter++;
// Select current animation
if (IsKeyPressed(KEY_RIGHT)) animIndex = (animIndex + 1)%animCount;
else if (IsKeyPressed(KEY_LEFT)) animIndex = (animIndex + animCount - 1)%animCount;
if (animFrameCounter >= anims[animId].frameCount) animFrameCounter = 0;
UpdateModelAnimation(model, anims[animId], animFrameCounter);
animPlaying = true;
}
// Select animation by pressing C
if (IsKeyPressed(KEY_C))
{
animFrameCounter = 0;
animId++;
if (animId >= (int)animsCount) animId = 0;
UpdateModelAnimation(model, anims[animId], 0);
animPlaying = true;
}
}
// Toggle skeleton drawing
if (IsKeyPressed(KEY_B)) drawSkeleton ^= 1;
// Toggle mesh drawing
if (IsKeyPressed(KEY_M)) drawMesh ^= 1;
// Update model animation
animCurrentFrame += 1.0f;
if (animCurrentFrame >= anims[animIndex].keyframeCount) animCurrentFrame = 0.0f;
UpdateModelAnimation(model, anims[animIndex], animCurrentFrame);
//----------------------------------------------------------------------------------
// Draw
@ -109,52 +84,19 @@ int main(void)
BeginMode3D(camera);
// Draw 3d model with texture
if (drawMesh) DrawModel(model, position, 1.0f, WHITE);
// Draw the animated skeleton
if (drawSkeleton)
if (!IsKeyDown(KEY_SPACE)) DrawModel(model, position, 1.0f, WHITE);
else
{
// Loop to (boneCount - 1) because the last one is a special "no bone" bone,
// needed to workaround buggy models
// without a -1, we would always draw a cube at the origin
for (int i = 0; i < model.boneCount - 1; i++)
{
// By default the model is loaded in bind-pose by LoadModel()
// But if UpdateModelAnimation() has been called at least once
// then the model is already in animation pose, so we need the animated skeleton
if (!animPlaying || !animsCount)
{
// Display the bind-pose skeleton
DrawCube(model.bindPose[i].translation, 0.04f, 0.04f, 0.04f, RED);
if (model.bones[i].parent >= 0)
{
DrawLine3D(model.bindPose[i].translation,
model.bindPose[model.bones[i].parent].translation, RED);
}
}
else
{
// Display the frame-pose skeleton
DrawCube(anims[animId].framePoses[animFrameCounter][i].translation, 0.05f, 0.05f, 0.05f, RED);
if (anims[animId].bones[i].parent >= 0)
{
DrawLine3D(anims[animId].framePoses[animFrameCounter][i].translation,
anims[animId].framePoses[animFrameCounter][anims[animId].bones[i].parent].translation, RED);
}
}
}
// Draw the animated skeleton
DrawModelSkeleton(model.skeleton, anims[animIndex].keyframePoses[(int)animCurrentFrame], 1.0f, RED);
}
DrawGrid(10, 1.0f); // Draw a grid
DrawGrid(10, 1.0f);
EndMode3D();
DrawText("PRESS SPACE to PLAY MODEL ANIMATION", 10, GetScreenHeight() - 80, 10, MAROON);
DrawText("PRESS N to STEP ONE ANIMATION FRAME", 10, GetScreenHeight() - 60, 10, DARKGRAY);
DrawText("PRESS C to CYCLE THROUGH ANIMATIONS", 10, GetScreenHeight() - 40, 10, DARKGRAY);
DrawText("PRESS M to toggle MESH, B to toggle SKELETON DRAWING", 10, GetScreenHeight() - 20, 10, DARKGRAY);
DrawText(TextFormat("Current animation: %s", anims[animIndex].name), 10, 10, 20, LIGHTGRAY);
DrawText("Press SPACE to draw skeleton", 10, 40, 20, MAROON);
DrawText("(c) CesiumMan model by KhronosGroup", GetScreenWidth() - 210, GetScreenHeight() - 20, 10, GRAY);
EndDrawing();
@ -163,14 +105,28 @@ int main(void)
// De-Initialization
//--------------------------------------------------------------------------------------
// Unload model animations data
UnloadModelAnimations(anims, animsCount);
UnloadModel(model); // Unload model
UnloadModelAnimations(anims, animCount); // Unload model animations data
UnloadModel(model); // Unload model
CloseWindow(); // Close window and OpenGL context
//--------------------------------------------------------------------------------------
return 0;
}
// Draw model skeleton
static void DrawModelSkeleton(ModelSkeleton skeleton, ModelAnimPose pose, float scale, Color color)
{
// Loop to (boneCount - 1) because the last one is a special "no bone" bone,
// needed to workaround buggy models without a -1, a cube is always drawn at the origin
for (int i = 0; i < skeleton.boneCount - 1; i++)
{
// Display the frame-pose skeleton
DrawCube(pose[i].translation, scale*0.05f, scale*0.05f, scale*0.05f, color);
if (skeleton.bones[i].parent >= 0)
{
DrawLine3D(pose[i].translation, pose[skeleton.bones[i].parent].translation, color);
}
}
}

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7
examples/models/models_loading_vox.c
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@ -25,9 +25,9 @@
#include "rlights.h"
#if defined(PLATFORM_DESKTOP)
#define GLSL_VERSION 330
#define GLSL_VERSION 330
#else // PLATFORM_ANDROID, PLATFORM_WEB
#define GLSL_VERSION 100
#define GLSL_VERSION 100
#endif
//------------------------------------------------------------------------------------
@ -130,6 +130,7 @@ int main(void)
camerarot.y = 0;
}
// Update camere movement, custom controls
UpdateCameraPro(&camera,
(Vector3){ (IsKeyDown(KEY_W) || IsKeyDown(KEY_UP))*0.1f - (IsKeyDown(KEY_S) || IsKeyDown(KEY_DOWN))*0.1f, // Move forward-backward
(IsKeyDown(KEY_D) || IsKeyDown(KEY_RIGHT))*0.1f - (IsKeyDown(KEY_A) || IsKeyDown(KEY_LEFT))*0.1f, // Move right-left
@ -173,7 +174,7 @@ int main(void)
DrawText("- MOUSE LEFT BUTTON: CYCLE VOX MODELS", 20, 50, 10, BLUE);
DrawText("- MOUSE MIDDLE BUTTON: ZOOM OR ROTATE CAMERA", 20, 70, 10, BLUE);
DrawText("- UP-DOWN-LEFT-RIGHT KEYS: MOVE CAMERA", 20, 90, 10, BLUE);
DrawText(TextFormat("Model file: %s", GetFileName(voxFileNames[currentModel])), 10, 10, 20, GRAY);
DrawText(TextFormat("VOX model file: %s", GetFileName(voxFileNames[currentModel])), 10, 10, 20, GRAY);
EndDrawing();
//----------------------------------------------------------------------------------

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