Livecode Shader Workshop
Demo - Drops
Tools: OpenGL, LiveCode, The Force
DROPS, is a live sound reactive shader, based on OpenGL, coded on The Force. Project uses the sound of the drops to trigger corresponding animation( /visual effects here).
Project uses the " Uneven Capsule " from Inigo Quilez’s page for 2D, to generate original graphic. Then,it combines the arguments of the uneven capsule with time and bands function - making the graphic become dynamic. When the sound is detected louder, the number on y coordinate goes up, and the "drop" jumps down.
sdUnevenCapsule Fuction
float sdUnevenCapsule( vec2 p, float r1, float r2, float h )
{
p.x = abs(p.x);
float b = (r1-r2)/h;
float a = sqrt(1.0-b*b);
float k = dot(p,vec2(-b,a));
if( k < 0.0 ) return length(p) - r1;
if( k > a*h ) return length(p-vec2(0.0,h)) - r2;
return dot(p, vec2(a,b) ) - r1;
}
Main Fuction
void main () {
vec2 pos = uv();
pos = mod(pos, vec2(pos))+pos;
float shape2 = sdUnevenCapsule(pos+vec2(0,-2.+bands.y*5.), 2.+2.*sin(time), 1., 5.);
shape2 = ceil(shape2);
pos = pos + vec2(bands.x,bands.y);
float shape1 =circ (pos);
vec3 brightness = vec3(0.2);
vec3 contrast = vec3(0.2,0.23,0.34);
vec3 osc = vec3(0.2,0.24,0.4);
vec3 phase = vec3(0.3);
float shape = shape2*100.;
vec3 color = cosPalette(shape - time/2., brightness*4.,contrast*.5,osc*0.9,phase*10.);
gl_FragColor = vec4(color,1);
}
