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Just moving some lines around

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This commit is contained in:
Grant Sanderson 2023-01-19 20:24:59 -08:00
parent 909e515a2f
commit debc68a3b4
1 changed files with 5 additions and 6 deletions
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11
manimlib/shaders/quadratic_bezier_stroke/frag.glsl
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@ -13,14 +13,13 @@ out vec4 frag_color;
const float QUICK_DIST_WIDTH = 0.2;
float dist_to_curve(){
// In the linear case, the curve will have
// been set to equal the x axis
if(bool(is_linear)) return abs(uv_coords.y);
// Returns distance from uv_coords to the curve v = u^2
float x0 = uv_coords.x;
float y0 = uv_coords.y;
// In the linear case, the curve will have
// been set to equal the x axis
if(bool(is_linear)) return abs(y0);
if(uv_stroke_width < QUICK_DIST_WIDTH){
// This is a quick approximation for computing
// the distance to the curve.
@ -46,7 +45,7 @@ float dist_to_curve(){
float dfx = 3 * x * x + p;
x = x - fx / dfx;
}
return distance(uv_coords, vec2(x, x * x));
return distance(vec2(x0, y0), vec2(x, x * x));
}