Pixel-Composer/scripts/__vector/__vector.gml

20 lines
436 B
Plaintext

function d3_normalize(vec) {
var vx = vec[0], vy = vec[1], vz = vec[2];
var mag = sqrt(vx * vx + vy * vy + vz * vz);
vec[0] = vx / mag;
vec[1] = vy / mag;
vec[2] = vz / mag;
return vec;
}
function d3_cross_product(a, b) {
var ax = a[0], ay = a[1], az = a[2],
bx = b[0], by = b[1], bz = b[2];
var result = [];
result[0] = ay * bz - az * by;
result[1] = az * bx - ax * bz;
result[2] = ax * by - ay * bx;
return result;
}