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use matrix math!

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This commit is contained in:
Chad Brokaw 2023-02-23 01:19:04 -05:00
parent 659ab2ff7e
commit f657b88018
1 changed files with 1 additions and 5 deletions
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6
shader/draw_leaf.wgsl
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@ -151,11 +151,7 @@ fn main(
let r1 = bitcast<f32>(scene[dd + 6u]);
let inv_det = 1.0 / (matrx.x * matrx.w - matrx.y * matrx.z);
let inv_mat = inv_det * vec4(matrx.w, -matrx.y, -matrx.z, matrx.x);
var inv_tr = inv_det * vec2(
matrx.z * translate.y - matrx.w * translate.x,
matrx.y * translate.x - matrx.x * translate.y,
);
inv_tr -= p0;
let inv_tr = mat2x2(inv_mat.xy, inv_mat.zw) * -translate - p0;
let center1 = p1 - p0;
let rr = r1 / (r1 - r0);
let ra_inv = rr / (r1 * r1 - dot(center1, center1));