lygia/space/polar2cart)polar to cartesian conversion.
Use:
polar2cart(<vec2> polar)
#ifndef FNC_POLAR2CART
#define FNC_POLAR2CART
vec2 polar2cart(in vec2 polar) {
return vec2(cos(polar.x), sin(polar.x)) * polar.y;
}
// https://mathworld.wolfram.com/SphericalCoordinates.html
vec3 polar2cart( in float r, in float phi, in float theta) {
float x = r * cos(theta) * sin(phi);
float y = r * sin(theta) * sin(phi);
float z = r * cos(phi);
return vec3(x, y, z);
}
#endif
Use:
polar2cart(<float2> polar)
#ifndef FNC_POLAR2CART
#define FNC_POLAR2CART
float2 polar2cart(in float2 polar) {
return float2(cos(polar.x), sin(polar.x)) * polar.y;
}
// https://mathworld.wolfram.com/SphericalCoordinates.html
float3 polar2cart( in float r, in float phi, in float theta) {
float x = r * cos(theta) * sin(phi);
float y = r * sin(theta) * sin(phi);
float z = r * cos(phi);
return float3(x, y, z);
}
#endif
Use:
polar2cart(<float2> polar)
#ifndef FNC_POLAR2CART
#define FNC_POLAR2CART
float2 polar2cart(float2 polar) { return float2(cos(polar.x), sin(polar.x)) * polar.y; }
#endif
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