pub fn instance_rows(
center: [f32; 2],
size: [f32; 2],
rotation: f32,
anchor: [f32; 2],
flip_x: bool,
flip_y: bool,
) -> ([f32; 4], [f32; 4])Expand description
Transform rows mapping quad corners (-0.5..0.5) to world coords,
honoring size, rotation, anchor, and mirror. Matches the canvas path
pixel-for-pixel at the default anchor: corner (-0.5,-0.5) lands on
center - size / 2.