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simpler version of step box

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Beppe Vanrolleghem
2024-05-23 13:13:06 +02:00
parent f7065faec4
commit 7382b344c6
1 changed files with 13 additions and 7 deletions
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20
experiments/draw_poly/main.frag
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@@ -19,6 +19,7 @@ float h_line(vec2 st, float ycor, float width, float x1, float x2) {
void main() {
vec2 st = gl_FragCoord.xy/u_resolution;
vec2 stm = u_mouse/u_resolution;
vec3 color = vec3(0.0,0.0,0.0);
//float width = 0.001;
//color += v_line(st, 0.4, 0.001, 0.25, 0.75) * vec3(1.0);
@@ -33,16 +34,21 @@ void main() {
//now the simple solution
float box = step(0.4, st.x)-(1.0-step(0.25,st.y)) - step(0.6, st.x)-step(0.75, st.y);
float r = sin(u_time/200.0);
float g = sin(u_time/3000000.333);
//float box = step(0.4, st.x)-(1.0-step(0.25,st.y)) - step(0.6, st.x)-step(0.75, st.y);
//even simpler
vec2 box = step(vec2(0.4, 0.25), st)-step(vec2(0.6,0.75), st);
float r = sin(u_time/20.0);
float g = sin(u_time/30.0);
float b = sin(u_time);
color.r = r;
color.g = g;
color.b = b;
//float mod = distance(stm, vec2(0.5));
float mod = 1.0;
color.r = r*mod;
color.g = g*mod;
color.b = b*mod;
color = color;
gl_FragColor = vec4(color, box);
gl_FragColor = vec4(color, box.x*box.y);
}