viktorljung
101 lines
2.4 KiB
C++
101 lines
2.4 KiB
C++
#ifndef BlendTree_h__
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#define BlendTree_h__
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#include "Common.h"
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#include "../GLM.h"
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#include "Skeleton.h"
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#include "../Core/EntityWrapper.h"
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#include "../Core/World.h"
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#include <stack>
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class BlendTree
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{
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public:
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enum class NodeType
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{
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Additive,
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Blend,
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Override,
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Animation,
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};
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struct Node
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{
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std::string Name;
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EntityWrapper Entity;
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Node* Parent = nullptr;
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Node* Child[2] = { nullptr, nullptr };
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NodeType Type;
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std::map<int, Skeleton::PoseData> Pose;
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bool SubTreeRoot = false;
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double Weight = 0.0;
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Node* Next() {
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Node* next = this;
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if (next->Child[1] == nullptr) {
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// Node has no right child
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next = this;
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while (next->Parent != nullptr && next == next->Parent->Child[1]) {
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next = next->Parent;
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}
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next = next->Parent;
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} else {
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// Find the leftmost node in the right subtree
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next = next->Child[1];
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while (next->Child[0] != nullptr) {
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next = next->Child[0];
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}
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}
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return next;
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}
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};
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struct AutoBlendInfo
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{
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std::string NodeName;
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double progress;
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bool Start;
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bool SingleBlend;
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std::unordered_map<EntityWrapper, double> StartWeights;
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};
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BlendTree(EntityWrapper ModelEntity, Skeleton* skeleton);
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~BlendTree();
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std::vector<glm::mat4> GetFinalPose() { return m_FinalPose; }
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glm::mat4 GetBoneTransform(int boneID);
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bool IsValid() { return (m_Root == nullptr ? false : true); }
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void PrintTree();
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BlendTree::AutoBlendInfo AutoBlendStep(AutoBlendInfo blendInfo);
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BlendTree::Node* GetCommonParent(std::string NodeName1, std::string NodeName2);
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BlendTree::Node* FirstCommonParent(Node* node1, Node* node2);
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EntityWrapper GetSubTreeRoot(std::string nodeName);
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private:
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Skeleton* m_Skeleton = nullptr;
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Node* m_Root = nullptr;
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std::vector<glm::mat4> m_FinalPose;
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std::map<int, glm::mat4> m_FinalBoneTransforms;
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std::vector<glm::mat4> AccumulateFinalPose();
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BlendTree::Node* FillTreeByName(Node* parentNode, std::string name, EntityWrapper parentEntity);
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std::vector<BlendTree::Node*> FindNodesByName(std::string name);
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void Blend(std::map<int, Skeleton::PoseData>& pose);
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};
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#endif
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