protected void unproject(float x, float y, float[] coords, int position) {
mv[0] = x;
mv[1] = y;
mv[2] = -1;
mUnprojMatrix.prj(mv);
double nx = mv[0];
double ny = mv[1];
double nz = mv[2];
mv[0] = x;
mv[1] = y;
mv[2] = 1;
mUnprojMatrix.prj(mv);
double fx = mv[0];
double fy = mv[1];
double fz = mv[2];
double dx = fx - nx;
double dy = fy - ny;
double dz = fz - nz;
double dist = -nz / dz;
coords[position + 0] = (float) (nx + dist * dx);
coords[position + 1] = (float) (ny + dist * dy);
}
protected boolean copy(Viewport viewport) {
mHeight = viewport.mHeight;
mWidth = viewport.mWidth;
mProjMatrix.copy(viewport.mProjMatrix);
mProjMatrixUnscaled.copy(viewport.mProjMatrixUnscaled);
mProjMatrixInverse.copy(viewport.mProjMatrixInverse);
mUnprojMatrix.copy(viewport.mUnprojMatrix);
mRotationMatrix.copy(viewport.mRotationMatrix);
mViewMatrix.copy(viewport.mViewMatrix);
mViewProjMatrix.copy(viewport.mViewProjMatrix);
return viewport.getMapPosition(mPos);
}
/**
* Get the screen pixel for map coordinates
*
* @param out Point projected to screen coordinate
*/
public void toScreenPoint(double x, double y, Point out) {
double cs = mPos.scale * Tile.SIZE;
double cx = mPos.x * cs;
double cy = mPos.y * cs;
mv[0] = (float) (x * cs - cx);
mv[1] = (float) (y * cs - cy);
mv[2] = 0;
mv[3] = 1;
mViewProjMatrix.prj(mv);
out.x = (mv[0] * (mWidth / 2));
out.y = -(mv[1] * (mHeight / 2));
}