void Ys3DDrawingEnvironment::TransformScreenCoordTo3DLine(YsVec3 &org,YsVec3 &vec,double sx,double sy) const
{
if(YSTRUE==screenOriginIsTopLeft)
{
sy=(double)windowHeight-sy;
}
const YsMatrix4x4 &viewMat=GetViewMatrix();
const YsMatrix4x4 &projMat=GetProjectionMatrix();
const YsMatrix4x4 projViewMat=projMat*viewMat;
const YsVec3 p1(sx,sy,-1.0),p2(sx,sy,1.0);
YsTransformScreenCoordTo3DCoord(org,p1,viewport,projViewMat);
YsTransformScreenCoordTo3DCoord(vec,p2,viewport,projViewMat);
vec-=org;
vec.Normalize();
}
void FsGui3DInterface::DrawRectMarker(const YsVec3 &o,const double lng) const
{
YsVec3 scrnO;
YsTransform3DCoordToScreenCoord(scrnO,o,viewport,projViewModelTfm);
YsVec3 quad[4]=
{
YsVec3(scrnO.x()-markerSize,scrnO.y()-markerSize,scrnO.z()),
YsVec3(scrnO.x()+markerSize,scrnO.y()-markerSize,scrnO.z()),
YsVec3(scrnO.x()+markerSize,scrnO.y()+markerSize,scrnO.z()),
YsVec3(scrnO.x()-markerSize,scrnO.y()+markerSize,scrnO.z())
};
YsTransformScreenCoordTo3DCoord(quad[0],quad[0],viewport,projViewModelTfm);
YsTransformScreenCoordTo3DCoord(quad[1],quad[1],viewport,projViewModelTfm);
YsTransformScreenCoordTo3DCoord(quad[2],quad[2],viewport,projViewModelTfm);
YsTransformScreenCoordTo3DCoord(quad[3],quad[3],viewport,projViewModelTfm);
glBegin(GL_LINE_LOOP);
glVertex3dv(quad[0]);
glVertex3dv(quad[1]);
glVertex3dv(quad[2]);
glVertex3dv(quad[3]);
glEnd();
}
