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| 1 | +// |
| 2 | +// ofxAssimpSrcAnimKeyCollection.cpp |
| 3 | +// Created by Nick Hardeman on 11/1/23. |
| 4 | +// |
| 5 | + |
| 6 | +#include "ofxAssimpSrcAnimKeyCollection.h" |
| 7 | +#include "ofxAssimpUtils.h" |
| 8 | + |
| 9 | +using namespace ofx::assimp; |
| 10 | + |
| 11 | +//-------------------------------------------------------------- |
| 12 | +void SrcAnimKeyCollection::setup( aiNodeAnim* aNodeAnim, float aDurationInTicks ) { |
| 13 | + mNodeAnim = aNodeAnim; |
| 14 | + mDurationInTicks = aDurationInTicks; |
| 15 | +} |
| 16 | + |
| 17 | +//-------------------------------------------------------------- |
| 18 | +bool SrcAnimKeyCollection::hasKeys() { |
| 19 | + return mNodeAnim != nullptr; |
| 20 | +} |
| 21 | + |
| 22 | + |
| 23 | +//-------------------------------------------------------------- |
| 24 | +glm::vec3 SrcAnimKeyCollection::getVec3ForTime( const float& atime, const std::vector<ofx::assimp::AnimVectorKey>& akeys ) { |
| 25 | + size_t numKeys = akeys.size(); |
| 26 | + for( size_t i = 0; i < numKeys; i++ ) { |
| 27 | + if( akeys[i].time == atime ) { |
| 28 | + return akeys[i].value; |
| 29 | + } else if( akeys[i].time > atime ) { |
| 30 | + if( i > 0 ) { |
| 31 | + float keyDiff = akeys[i].time - akeys[i-1].time; |
| 32 | + return glm::mix( akeys[i-1].value, akeys[i].value, (atime-akeys[i-1].time) / keyDiff ); |
| 33 | + } else { |
| 34 | + return akeys[i].value; |
| 35 | + } |
| 36 | + } |
| 37 | + } |
| 38 | + if( numKeys > 1 ) { |
| 39 | + return akeys.back().value; |
| 40 | + } |
| 41 | + return glm::vec3(0.f, 0.f, 0.f); |
| 42 | +} |
| 43 | + |
| 44 | +//-------------------------------------------------------------- |
| 45 | +glm::vec3 SrcAnimKeyCollection::getPosition( const float& atime ) { |
| 46 | + auto rpos = glm::vec3(0.f, 0.f, 0.f); |
| 47 | + if( positionKeys.size() < 1 ) { |
| 48 | + |
| 49 | + } else if( positionKeys.size() == 1 ) { |
| 50 | + rpos = positionKeys[0].value; |
| 51 | + } else { |
| 52 | + rpos = getVec3ForTime( atime, positionKeys ); |
| 53 | + } |
| 54 | + return rpos; |
| 55 | +} |
| 56 | + |
| 57 | +//-------------------------------------------------------------- |
| 58 | +glm::vec3 SrcAnimKeyCollection::getScale( const float& atime ) { |
| 59 | + auto rscale = glm::vec3(1.f, 1.f, 1.f); |
| 60 | + if( scaleKeys.size() < 1 ) { |
| 61 | + |
| 62 | + } else if(scaleKeys.size() == 1 ) { |
| 63 | + rscale = scaleKeys[0].value; |
| 64 | + } else { |
| 65 | + rscale = getVec3ForTime( atime, scaleKeys ); |
| 66 | + } |
| 67 | + return rscale; |
| 68 | +} |
| 69 | + |
| 70 | +//-------------------------------------------------------------- |
| 71 | +glm::quat SrcAnimKeyCollection::getRotation( const float& atime ) { |
| 72 | + size_t numKeys = rotationKeys.size(); |
| 73 | + auto rq = glm::quat(1.f, 0.f, 0.f, 0.f); |
| 74 | + if(numKeys < 2) { |
| 75 | + if( numKeys == 1 ) { |
| 76 | + return rotationKeys[0].value; |
| 77 | + } else { |
| 78 | + return rq; |
| 79 | + } |
| 80 | + } else { |
| 81 | + for( size_t i = 0; i < numKeys; i++ ) { |
| 82 | + if( rotationKeys[i].time == atime ) { |
| 83 | + return rotationKeys[i].value; |
| 84 | + } else if( rotationKeys[i].time > atime ) { |
| 85 | + if( i > 0 ) { |
| 86 | + float keyDiff = rotationKeys[i].time - rotationKeys[i-1].time; |
| 87 | + return glm::slerp( rotationKeys[i-1].value, rotationKeys[i].value, ((atime-rotationKeys[i-1].time) / keyDiff) ); |
| 88 | + } else { |
| 89 | + return rotationKeys[i].value; |
| 90 | + } |
| 91 | + } |
| 92 | + } |
| 93 | + } |
| 94 | + if( numKeys > 1 ) { |
| 95 | + return rotationKeys.back().value; |
| 96 | + } |
| 97 | + return rq; |
| 98 | +} |
| 99 | + |
| 100 | +//-------------------------------------------------------------- |
| 101 | +std::vector<AnimVectorKey> SrcAnimKeyCollection::getAnimVectorKeysForTime(const float& aStartTime, const float& aEndTime, unsigned int aNumKeys, aiVectorKey* aAiKeys) { |
| 102 | + |
| 103 | + std::vector<AnimVectorKey> rkeys; |
| 104 | + if( aNumKeys < 1 ) { |
| 105 | + return rkeys; |
| 106 | + } |
| 107 | + |
| 108 | + if(aNumKeys == 1) { |
| 109 | + AnimVectorKey vkey; |
| 110 | + vkey.time = aStartTime; |
| 111 | + vkey.value = aiVecToOfVec(aAiKeys[0].mValue); |
| 112 | + vkey.valueAi = aAiKeys[0].mValue; |
| 113 | + rkeys.push_back( vkey ); |
| 114 | + return rkeys; |
| 115 | + } |
| 116 | + |
| 117 | + double currTime = aStartTime; |
| 118 | + for( unsigned int i = 0; i < aNumKeys; i++ ) { |
| 119 | + auto& key1 = aAiKeys[i]; |
| 120 | + auto v1 = aiVecToOfVec(key1.mValue); |
| 121 | + AnimVectorKey vkey; |
| 122 | + vkey.time = key1.mTime; |
| 123 | + vkey.value = v1; |
| 124 | + vkey.valueAi = key1.mValue; |
| 125 | + rkeys.push_back( vkey ); |
| 126 | + } |
| 127 | + |
| 128 | + return rkeys; |
| 129 | +} |
| 130 | + |
| 131 | +//-------------------------------------------------------------- |
| 132 | +std::vector<AnimRotationKey> SrcAnimKeyCollection::getAnimRotationKeysForTime(const float& aStartTime, const float& aEndTime, unsigned int aNumKeys, aiQuatKey* aAiKeys) { |
| 133 | + |
| 134 | + std::vector<AnimRotationKey> rkeys; |
| 135 | + if( aNumKeys < 1 ) { |
| 136 | + return rkeys; |
| 137 | + } |
| 138 | + if(aNumKeys == 1) { |
| 139 | + AnimRotationKey vkey; |
| 140 | + vkey.time = aStartTime; |
| 141 | + vkey.value = aiQuatToOfQuat(aAiKeys[0].mValue); |
| 142 | + vkey.valueAi = aAiKeys[0].mValue; |
| 143 | + rkeys.push_back( vkey ); |
| 144 | + return rkeys; |
| 145 | + } |
| 146 | + double currTime = aStartTime; |
| 147 | + for( unsigned int i = 0; i < aNumKeys; i++ ) { |
| 148 | + auto& key1 = aAiKeys[i]; |
| 149 | + auto v1 = aiQuatToOfQuat(key1.mValue); |
| 150 | + AnimRotationKey vkey; |
| 151 | + vkey.time = key1.mTime; |
| 152 | + vkey.value = v1; |
| 153 | + vkey.valueAi = key1.mValue; |
| 154 | + rkeys.push_back( vkey ); |
| 155 | + } |
| 156 | + |
| 157 | + return rkeys; |
| 158 | +} |
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