init

shared/UtilsAnim.h

@@ -0,0 +1,76 @@
+#pragma once
+
+#include <glm/glm.hpp>
+#include <glm/gtc/matrix_transform.hpp>
+#include <glm/gtc/quaternion.hpp>
+#include <glm/gtc/type_ptr.hpp>
+#include <string>
+#include <unordered_map>
+#include <vector>
+
+using glm::quat;
+using glm::vec3;
+using glm::vec4;
+
+struct AnimationKeyPosition {
+  vec3 pos;
+  float time;
+};
+
+struct AnimationKeyRotation {
+  quat rot;
+  float time;
+};
+
+struct AnimationKeyScale {
+  vec3 scale;
+  float time;
+};
+
+struct AnimationChannel {
+  std::vector<AnimationKeyPosition> pos;
+  std::vector<AnimationKeyRotation> rot;
+  std::vector<AnimationKeyScale> scale;
+};
+
+#define MAX_MORPH_WEIGHTS 8
+#define MAX_MORPHS 100
+
+struct MorphingChannelKey {
+  float time                       = 0.0f;
+  uint32_t mesh[MAX_MORPH_WEIGHTS] = { 0, 0, 0, 0, 0, 0, 0, 0 };
+  float weight[MAX_MORPH_WEIGHTS]  = { 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f };
+};
+
+struct MorphingChannel {
+  std::string name;
+  std::vector<MorphingChannelKey> key;
+};
+
+struct Animation {
+  std::unordered_map<int, AnimationChannel> channels;
+  std::vector<MorphingChannel> morphChannels;
+  float duration; // In seconds
+  float ticksPerSecond;
+  std::string name;
+};
+
+struct MorphState {
+  uint32_t meshId                         = ~0u;
+  uint32_t morphTarget[MAX_MORPH_WEIGHTS] = { 0, 0, 0, 0, 0, 0, 0, 0 };
+  float weights[MAX_MORPH_WEIGHTS]        = { 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f };
+};
+
+struct AnimationState {
+  uint32_t animId   = ~0u;
+  float currentTime = 0.0f;
+  bool playOnce     = false;
+  bool active       = false;
+};
+
+struct GLTFContext;
+struct aiScene;
+
+void initAnimations(GLTFContext& glTF, const aiScene* scene);
+void updateAnimation(GLTFContext& glTF, AnimationState& anim, float dt);
+void updateAnimationBlending(GLTFContext& glTF, AnimationState& anim1, AnimationState& anim2, float weight, float dt);