Variable glsl_CenterOrientEllipseConst
glsl_CenterOrientEllipse: "\nstruct CenterOrientEllipse {\n vec2 k; // center\n vec2 u1; // minor axis direction\n vec2 u2; // major axis direction\n float a; // semimajor axis\n float b; // semiminor axis\n bool valid; // indicates if the ellipse is valid\n};\n" = ...