Implemented simple tree logic, added speed scale node.

CMakeLists.txt

@@ -48,6 +48,7 @@ target_sources(AnimTestbed PRIVATE
         src/SkinnedMesh.h
         src/AnimNode.cc
         src/AnimSamplerNode.cc
+        src/SpeedScaleNode.cc
         src/BlendNode.cc
         src/AnimationController.cc
         3rdparty/glfw/deps/glad_gl.c

src/AnimSamplerNode.cc

@@ -17,6 +17,8 @@ void AnimSamplerNode::SetAnimation(ozz::animation::Animation* animation) {
   m_sampling_cache.Resize(num_joints);
 }
 
+
+
 void AnimSamplerNode::Evaluate(ozz::vector<ozz::math::SoaTransform>* local_matrices) {
   ozz::animation::SamplingJob sampling_job;
   sampling_job.animation = m_animation;
@@ -28,6 +30,8 @@ void AnimSamplerNode::Evaluate(ozz::vector<ozz::math::SoaTransform>* local_matri
   }
 }
 
+
+
 void AnimSamplerNode::DrawDebugUi() {
   std::string node_name = "AnimSamplerNode: " + m_name;
   if (ImGui::TreeNode(node_name.c_str())) {
@@ -45,7 +49,6 @@ void AnimSamplerNode::DrawDebugUi() {
     if (ImGui::Combo("Animation", &item_current, items, anim_count)) {
       m_animation = skinned_mesh->m_animations[item_current];
     }
-    ImGui::SliderFloat("Time Scale", &m_time_scale, 0.01f, 5.f);
     ImGui::Checkbox("Override", &m_override_ratio);
     ImGui::SameLine();
     ImGui::SliderFloat("Ratio", &m_anim_ratio, 0.f, 1.f);

src/AnimSamplerNode.h

@@ -10,14 +10,12 @@
 struct AnimSamplerNode : public AnimNode {
   AnimSamplerNode(AnimationController* animation_controller)
       : AnimNode(animation_controller),
-        m_time_scale(1.f),
         m_anim_ratio(0.f),
         m_override_ratio(false){};
   virtual ~AnimSamplerNode() {}
 
   ozz::animation::Animation* m_animation;
 
-  float m_time_scale;
   float m_anim_ratio;
   bool m_override_ratio;
 
@@ -26,7 +24,7 @@ struct AnimSamplerNode : public AnimNode {
   void SetAnimation(ozz::animation::Animation* animation);
 
   virtual void Update(float dt) override {
-    m_current_time += dt * m_time_scale;
+    m_current_time += dt;
     if (!m_override_ratio) {
       const float duration = m_animation->duration();
       m_anim_ratio = fmodf((float)m_current_time / duration, 1.0f);

src/AnimationController.cc

@@ -11,54 +11,57 @@
 
 #include "AnimSamplerNode.h"
 #include "SkinnedMesh.h"
+#include "SpeedScaleNode.h"
 
 AnimationController::AnimationController(SkinnedMesh* skinned_mesh)
-    : m_current_time(0.f),
+    : m_current_time(0.f), m_skinned_mesh(skinned_mesh) {
-      m_skinned_mesh(skinned_mesh),
-      m_blend_anim_A(nullptr),
-      m_blend_anim_B(nullptr),
-      m_blend_weight(0.f),
-      m_time_scale_A(1.f),
-      m_time_scale_B(1.f),
-      m_override_ratio_A(false),
-      m_override_ratio_B(false) {
   const int num_soa_joints = skinned_mesh->m_skeleton.num_soa_joints();
   const int num_joints = skinned_mesh->m_skeleton.num_joints();
   skinned_mesh->m_local_matrices.resize(num_soa_joints);
   skinned_mesh->m_model_matrices.resize(num_joints);
 
-  m_sampling_cache_A.Resize(num_joints);
-  m_sampling_cache_B.Resize(num_joints);
-
   m_local_matrices.resize(num_soa_joints);
-  m_local_matrices_A.resize(num_soa_joints);
-  m_local_matrices_B.resize(num_soa_joints);
-  m_local_matrices_blended.resize(num_soa_joints);
 
   assert(skinned_mesh->m_animations.size() > 1);
   SetBlendAnims(skinned_mesh->m_animations[1], skinned_mesh->m_animations[0]);
   ResetAnims();
 
   AnimSamplerNode* sampler_node = new AnimSamplerNode(this);
+  sampler_node->m_name = "AnimSampler0";
   sampler_node->SetAnimation(skinned_mesh->m_animations[0]);
-  m_output_node = sampler_node;
+  m_anim_nodes.push_back(sampler_node);
-  m_output_node->m_name = "AnimSampler0";
+
+  SpeedScaleNode* speed_node = new SpeedScaleNode(this);
+  speed_node->m_name = "SpeedNode0";
+  speed_node->m_child_node = sampler_node;
+  m_anim_nodes.push_back(speed_node);
+
+  m_output_node = speed_node;
   m_output_node->Reset();
 }
 
+
+
 AnimationController::~AnimationController() {
-  if (m_output_node) {
+  while (m_anim_nodes.size() > 0) {
-    delete m_output_node;
+    delete m_anim_nodes[m_anim_nodes.size() - 1];
-    m_output_node = nullptr;
+    m_anim_nodes.pop_back();
   }
+
+  m_output_node = nullptr;
 }
 
+
+
 void AnimationController::Update(float dt) {
   if (m_output_node == nullptr) {
     return;
   }
 
-  m_output_node->Update(dt); }
+  m_output_node->Update(dt);
+}
+
+
 
 void AnimationController::Evaluate() {
   if (m_output_node == nullptr) {
@@ -74,10 +77,11 @@ void AnimationController::Evaluate() {
   ltm_job.Run();
 };
 
+
+
 void AnimationController::DrawDebugUi() {
   ImGui::Begin("AnimationController");
   if (m_output_node && ImGui::TreeNode("Output")) {
-
     m_output_node->DrawDebugUi();
 
     ImGui::TreePop();

src/AnimationController.h

@@ -21,12 +21,8 @@ struct AnimationController {
   void SetBlendAnims(
       ozz::animation::Animation* blend_anim_A,
       ozz::animation::Animation* blend_anim_B) {
-    m_blend_anim_A = blend_anim_A;
-    m_blend_anim_B = blend_anim_B;
   }
   void ResetAnims() {
-    m_anim_time_A = 0.f;
-    m_anim_time_B = 0.f;
   }
   void Update(float dt);
   void Evaluate();
@@ -35,19 +31,6 @@ struct AnimationController {
 
   float m_current_time;
 
-  ozz::animation::Animation* m_blend_anim_A;
-  ozz::animation::Animation* m_blend_anim_B;
-
-  float m_time_scale_A;
-  float m_time_scale_B;
-  float m_anim_time_A;
-  float m_anim_time_B;
-  float m_anim_ratio_A;
-  float m_anim_ratio_B;
-  bool m_override_ratio_A;
-  bool m_override_ratio_B;
-  float m_blend_weight;
-
   ozz::vector<ozz::math::SoaTransform> m_local_matrices;
   ozz::vector<ozz::math::SoaTransform> m_local_matrices_A;
   ozz::vector<ozz::math::SoaTransform> m_local_matrices_B;
@@ -59,6 +42,8 @@ struct AnimationController {
   SkinnedMesh* m_skinned_mesh = nullptr;
 
   AnimNode* m_output_node;
+
+  std::vector<AnimNode*> m_anim_nodes;
 };
 
 #endif  //ANIMTESTBED_ANIMATIONCONTROLLER_H

src/SpeedScaleNode.cc

@@ -0,0 +1,18 @@
+//
+// Created by martin on 12.11.21.
+//
+
+#include "SpeedScaleNode.h"
+
+#include <imgui.h>
+
+void SpeedScaleNode::DrawDebugUi() {
+  std::string node_name = "SpeedScaleNode: " + m_name;
+  if (ImGui::TreeNode(node_name.c_str())) {
+    ImGui::SliderFloat("Time Scale", &m_time_scale, -5.f, 5.f);
+
+    m_child_node->DrawDebugUi();
+
+    ImGui::TreePop();
+  }
+}

src/SpeedScaleNode.h

@@ -0,0 +1,32 @@
+//
+// Created by martin on 12.11.21.
+//
+
+#ifndef ANIMTESTBED_SPEEDSCALENODE_H
+#define ANIMTESTBED_SPEEDSCALENODE_H
+
+#include "AnimNode.h"
+
+struct SpeedScaleNode : public AnimNode {
+  SpeedScaleNode(AnimationController* animation_controller): AnimNode (animation_controller), m_time_scale(1.f) {}
+
+  float m_time_scale;
+  AnimNode* m_child_node;
+
+  virtual void Reset() {
+    m_current_time = 0.f;
+  }
+
+  virtual void Update(float dt) {
+    m_current_time += dt * m_time_scale;
+    m_child_node->Update(dt * m_time_scale);
+  }
+
+  virtual void Evaluate(ozz::vector<ozz::math::SoaTransform>* local_matrices) override {
+      m_child_node->Evaluate(local_matrices);
+  };
+
+  virtual void DrawDebugUi() override;
+};
+
+#endif  //ANIMTESTBED_SPEEDSCALENODE_H