public static Cairo.Matrix ToCairoMatrix(this TikzEdt.Parser.TikzMatrix M)
{
Cairo.Matrix MM = new Cairo.Matrix(
M.m[0, 0],
M.m[0, 1],
M.m[1, 0],
M.m[1, 1],
M.m[0, 2],
M.m[1, 2]
);
return(MM);
}
public static Matrix ToMatrix(this TikzEdt.Parser.TikzMatrix M)
{
Matrix MM = new Matrix(
(float)M.m[0, 0],
(float)M.m[0, 1],
(float)M.m[1, 0],
(float)M.m[1, 1],
(float)M.m[0, 2],
(float)M.m[1, 2]
);
return(MM);
}
int EstimateRasterSteps()
{
TikzEdt.Parser.TikzMatrix M = View.CoordinateTransform.Inverse();
Point p1 = M.Transform(View.BB.BottomLeft), p2 = View.BB.BottomRight, p3 = View.BB.TopLeft, p4 = View.BB.TopRight;
double maxcoord = Math.Max(Math.Abs(p1.X), Math.Max(Math.Abs(p1.Y),
Math.Max(Math.Abs(p2.X), Math.Max(Math.Abs(p2.Y),
Math.Max(Math.Abs(p3.X), Math.Max(Math.Abs(p3.Y),
Math.Max(Math.Abs(p4.X), Math.Abs(p4.Y))))))));
if (maxcoord > 0) //if scale=0 maxcoord==NaN just return 0 then.
{
return(Convert.ToInt32(2 * maxcoord / GridWidth));
}
return(0);
}
