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Merge pull request #2089 from griffin2000/master 

Support out of order channels in BVH
pull/2095/head^2
Kim Kulling 2018-08-17 11:28:14 +02:00 committed by GitHub
parent 1388e0b79f f4e6d4bb9e
commit 92078bc47c
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 58 additions and 27 deletions
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85
code/BVHLoader.cpp
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@ -54,6 +54,7 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#include <assimp/IOSystem.hpp>
#include <assimp/scene.h>
#include <assimp/importerdesc.h>
#include <map>
using namespace Assimp;
using namespace Assimp::Formatter;
@ -461,6 +462,13 @@ void BVHLoader::CreateAnimation( aiScene* pScene)
aiNodeAnim* nodeAnim = new aiNodeAnim;
anim->mChannels[a] = nodeAnim;
nodeAnim->mNodeName.Set( nodeName);
std::map<BVHLoader::ChannelType, int> channelMap;
//Build map of channels
for (unsigned int channel = 0; channel < node.mChannels.size(); ++channel)
{
channelMap[node.mChannels[channel]] = channel;
}
// translational part, if given
if( node.mChannels.size() == 6)
@ -472,16 +480,32 @@ void BVHLoader::CreateAnimation( aiScene* pScene)
{
poskey->mTime = double( fr);
// Now compute all translations in the right order
for( unsigned int channel = 0; channel < 3; ++channel)
// Now compute all translations
for(BVHLoader::ChannelType channel = Channel_PositionX; channel <= Channel_PositionZ; channel = (BVHLoader::ChannelType)(channel +1))
{
switch( node.mChannels[channel])
{
case Channel_PositionX: poskey->mValue.x = node.mChannelValues[fr * node.mChannels.size() + channel]; break;
case Channel_PositionY: poskey->mValue.y = node.mChannelValues[fr * node.mChannels.size() + channel]; break;
case Channel_PositionZ: poskey->mValue.z = node.mChannelValues[fr * node.mChannels.size() + channel]; break;
default: throw DeadlyImportError( "Unexpected animation channel setup at node " + nodeName );
}
//Find channel in node
std::map<BVHLoader::ChannelType, int>::iterator mapIter = channelMap.find(channel);
if (mapIter == channelMap.end())
throw DeadlyImportError("Missing position channel in node " + nodeName);
else {
int channelIdx = mapIter->second;
switch (channel) {
case Channel_PositionX:
poskey->mValue.x = node.mChannelValues[fr * node.mChannels.size() + channelIdx];
break;
case Channel_PositionY:
poskey->mValue.y = node.mChannelValues[fr * node.mChannels.size() + channelIdx];
break;
case Channel_PositionZ:
poskey->mValue.z = node.mChannelValues[fr * node.mChannels.size() + channelIdx];
break;
default:
break;
}
}
}
++poskey;
}
@ -497,12 +521,6 @@ void BVHLoader::CreateAnimation( aiScene* pScene)
// rotation part. Always present. First find value offsets
{
unsigned int rotOffset = 0;
if( node.mChannels.size() == 6)
{
// Offset all further calculations
rotOffset = 3;
}
// Then create the number of rotation keys
nodeAnim->mNumRotationKeys = mAnimNumFrames;
@ -512,20 +530,33 @@ void BVHLoader::CreateAnimation( aiScene* pScene)
{
aiMatrix4x4 temp;
aiMatrix3x3 rotMatrix;
for (BVHLoader::ChannelType channel = Channel_RotationX; channel <= Channel_RotationZ; channel = (BVHLoader::ChannelType)(channel + 1))
{
//Find channel in node
std::map<BVHLoader::ChannelType, int>::iterator mapIter = channelMap.find(channel);
for( unsigned int channel = 0; channel < 3; ++channel)
{
// translate ZXY euler angels into a quaternion
const float angle = node.mChannelValues[fr * node.mChannels.size() + rotOffset + channel] * float( AI_MATH_PI) / 180.0f;
if (mapIter == channelMap.end())
throw DeadlyImportError("Missing rotation channel in node " + nodeName);
else {
int channelIdx = mapIter->second;
// translate ZXY euler angels into a quaternion
const float angle = node.mChannelValues[fr * node.mChannels.size() + channelIdx] * float(AI_MATH_PI) / 180.0f;
// Compute rotation transformations in the right order
switch (node.mChannels[rotOffset+channel])
{
case Channel_RotationX: aiMatrix4x4::RotationX( angle, temp); rotMatrix *= aiMatrix3x3( temp); break;
case Channel_RotationY: aiMatrix4x4::RotationY( angle, temp); rotMatrix *= aiMatrix3x3( temp); break;
case Channel_RotationZ: aiMatrix4x4::RotationZ( angle, temp); rotMatrix *= aiMatrix3x3( temp); break;
default: throw DeadlyImportError( "Unexpected animation channel setup at node " + nodeName );
}
// Compute rotation transformations in the right order
switch (channel)
{
case Channel_RotationX:
aiMatrix4x4::RotationX(angle, temp); rotMatrix *= aiMatrix3x3(temp);
break;
case Channel_RotationY:
aiMatrix4x4::RotationY(angle, temp); rotMatrix *= aiMatrix3x3(temp);
break;
case Channel_RotationZ: aiMatrix4x4::RotationZ(angle, temp); rotMatrix *= aiMatrix3x3(temp);
break;
default:
break;
}
}
}
rotkey->mTime = double( fr);