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MAT200C HW2
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<html> | |
<script type="text/javascript" src="https://rawgit.com/patriciogonzalezvivo/glslCanvas/master/build/GlslCanvas.js"></script> | |
<body> | |
<canvas class="glslCanvas" data-fragment=" | |
#ifdef GL_ES | |
precision highp float; | |
#endif | |
uniform vec2 u_resolution; | |
uniform vec2 u_mouse; | |
uniform float u_time; | |
vec2 random2(vec2 st){ | |
st = vec2( dot(st,vec2(127.1,311.7)), | |
dot(st,vec2(269.5,183.3)) ); | |
return -1.0 + 2.0*fract(sin(st)*43758.5453123); | |
} | |
// Value Noise by Inigo Quilez - iq/2013 | |
// https://www.shadertoy.com/view/lsf3WH | |
// -- Animation added | |
float noise(vec2 st) { | |
vec2 i = floor(st); | |
vec2 f = fract(st); | |
vec2 u = f*f*(3.0-2.0*f); | |
return mix( mix( dot( random2(i + vec2(0.0,0.0) ), f - vec2(0.0,0.0) ), | |
dot( random2(i + vec2(1.0,0.0) ), f - vec2(1.0,0.0) ), u.x)*sin(u_time)*st.y, | |
mix( dot( random2(i + vec2(0.0,1.0) ), f - vec2(0.0,1.0) ), | |
dot( random2(i + vec2(1.0,1.0) ), f - vec2(1.0,1.0) ), u.x)*cos(u_time)*st.y, u.y); | |
} | |
void main() { | |
vec2 st = gl_FragCoord.xy/u_resolution.xy; | |
st.x *= u_resolution.x/u_resolution.y; | |
st -= 0.5; | |
st *= 7.+sin(u_time)*.5; // 7x7 grid | |
st.x = u_time+st.x; // Sliding animation | |
vec3 color = vec3(fract(noise(st))); | |
vec3 color2 = vec3(noise(st)); | |
gl_FragColor = vec4(1.-color.r, color.g, color.b, 0.75) + vec4(vec3(color2.r, color2.g*2.,color2.b),0.25); | |
} | |
" | |
width="1000" height="500"> </canvas> | |
</body> | |
</html> |
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