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#pragma once
#include "pivot.h"
namespace selection
{
class Pivot2World
{
public:
Matrix4 _worldSpace;
Matrix4 _viewpointSpace;
Matrix4 _viewplaneSpace;
Vector3 _axisScreen;
void update(const Matrix4& pivot2world, const Matrix4& modelview, const Matrix4& projection, const Matrix4& viewport)
{
calculcateWorldSpace(pivot2world, modelview, projection, viewport);
calculateViewpointSpace(pivot2world, modelview, projection, viewport);
calculateViewplaneSpace(pivot2world, modelview, projection, viewport);
}
private:
void calculcateWorldSpace(const Matrix4& pivot2world, const Matrix4& modelview, const Matrix4& projection, const Matrix4& viewport)
{
_worldSpace = pivot2world;
Matrix4 pivot2screen = constructObject2Screen(pivot2world, modelview, projection, viewport);
Matrix4 scale = getInverseScale(pivot2screen);
_worldSpace.multiplyBy(scale);
scale = getPerspectiveScale(pivot2screen);
_worldSpace.multiplyBy(scale);
}
void calculateViewpointSpace(const Matrix4& pivot2world, const Matrix4& modelview, const Matrix4& projection, const Matrix4& viewport)
{
_viewpointSpace = pivot2world;
Matrix4 pivot2screen = constructObject2Screen(pivot2world, modelview, projection, viewport);
Matrix4 scale = getInverseScale(pivot2screen);
_viewpointSpace.multiplyBy(scale);
billboard_viewpointOriented(scale, pivot2screen);
_axisScreen = scale.zCol3();
_viewpointSpace.multiplyBy(scale);
scale = getPerspectiveScale(pivot2screen);
_viewpointSpace.multiplyBy(scale);
}
void calculateViewplaneSpace(const Matrix4& pivot2world, const Matrix4& modelview, const Matrix4& projection, const Matrix4& viewport)
{
_viewplaneSpace = pivot2world;
Matrix4 pivot2screen = constructObject2Screen(pivot2world, modelview, projection, viewport);
Matrix4 scale = getInverseScale(pivot2screen);
_viewplaneSpace.multiplyBy(scale);
billboard_viewplaneOriented(scale, pivot2screen);
_viewplaneSpace.multiplyBy(scale);
scale = getPerspectiveScale(pivot2screen);
_viewplaneSpace.multiplyBy(scale);
}
};
}
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