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49 lines
1.2 KiB
C++
49 lines
1.2 KiB
C++
#include "positionattitudetransform.hpp"
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namespace SceneUtil
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{
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PositionAttitudeTransform::PositionAttitudeTransform():
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_scale(1.0,1.0,1.0)
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{
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}
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bool PositionAttitudeTransform::computeLocalToWorldMatrix(osg::Matrix& matrix, osg::NodeVisitor*) const
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{
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if (_referenceFrame==RELATIVE_RF)
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{
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matrix.preMultTranslate(_position);
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matrix.preMultRotate(_attitude);
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matrix.preMultScale(_scale);
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}
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else // absolute
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{
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matrix.makeRotate(_attitude);
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matrix.postMultTranslate(_position);
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matrix.preMultScale(_scale);
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}
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return true;
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}
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bool PositionAttitudeTransform::computeWorldToLocalMatrix(osg::Matrix& matrix, osg::NodeVisitor*) const
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{
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if (_scale.x() == 0.0 || _scale.y() == 0.0 || _scale.z() == 0.0)
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return false;
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if (_referenceFrame==RELATIVE_RF)
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{
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matrix.postMultTranslate(-_position);
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matrix.postMultRotate(_attitude.inverse());
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matrix.postMultScale(osg::Vec3f(1.0/_scale.x(), 1.0/_scale.y(), 1.0/_scale.z()));
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}
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else // absolute
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{
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matrix.makeRotate(_attitude.inverse());
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matrix.preMultTranslate(-_position);
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matrix.postMultScale(osg::Vec3f(1.0/_scale.x(), 1.0/_scale.y(), 1.0/_scale.z()));
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}
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return true;
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}
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}
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