feat: added sin distortions

sdf.glsl

@@ -5,6 +5,7 @@ out vec4 FragColor;
 in vec2 texCoords;
 
 uniform float aspect;
+uniform float t;
 
 vec3 center = vec3(0.0,-4.0,20.0);
 float radius = 5.0;
@@ -55,7 +56,7 @@ float planeMin(vec3 pos){
 }
 
 float sphereMin(vec3 pos){
-    return length(pos - center) - radius;
+    return length(pos - center) - radius + 0.2*sin(5*pos.x+t)*sin(5*pos.y+t)*sin(5*pos.z+t);
 }
 
 Ray minFn(Ray ray){