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45 lines
1.6 KiB
C++
45 lines
1.6 KiB
C++
#include "box.hpp"
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namespace LuaUtil
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{
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Box::Box(const osg::Vec3f& center, const osg::Vec3f& halfSize, const osg::Quat& rotation)
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: mCenter(center)
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, mHalfSize(halfSize)
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, mRotation(rotation)
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{
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}
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Box::Box(const osg::Matrix& transform)
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{
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osg::Quat _;
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transform.decompose(mCenter, mRotation, mHalfSize, _);
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}
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std::array<osg::Vec3f, 8> Box::vertices() const
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{
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return {
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mCenter + mRotation * osg::Vec3f(-mHalfSize.x(), -mHalfSize.y(), -mHalfSize.z()),
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mCenter + mRotation * osg::Vec3f(mHalfSize.x(), -mHalfSize.y(), -mHalfSize.z()),
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mCenter + mRotation * osg::Vec3f(mHalfSize.x(), mHalfSize.y(), -mHalfSize.z()),
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mCenter + mRotation * osg::Vec3f(-mHalfSize.x(), mHalfSize.y(), -mHalfSize.z()),
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mCenter + mRotation * osg::Vec3f(-mHalfSize.x(), -mHalfSize.y(), mHalfSize.z()),
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mCenter + mRotation * osg::Vec3f(mHalfSize.x(), -mHalfSize.y(), mHalfSize.z()),
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mCenter + mRotation * osg::Vec3f(mHalfSize.x(), mHalfSize.y(), mHalfSize.z()),
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mCenter + mRotation * osg::Vec3f(-mHalfSize.x(), mHalfSize.y(), mHalfSize.z()),
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};
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}
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osg::Matrix Box::asTransform() const
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{
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osg::Matrix transform;
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transform.preMultTranslate(mCenter);
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transform.preMultRotate(mRotation);
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transform.preMultScale(mHalfSize);
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return transform;
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}
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bool Box::operator==(const Box& other) const
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{
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return mCenter == other.mCenter && mHalfSize == other.mHalfSize && mRotation == other.mRotation;
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}
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} |