Cubic-bezier implementation.

CubicBezier.cpp

float bezier(float t, float p0_x, float p0_y, float p1_x, float p1_y, float p2_x, float p2_y,
             float p3_x, float p3_y) {
    float c_x = 3 * (p1_x - p0_x);
    float b_x = 3 * (p2_x - p1_x) - c_x;
    float a_x = p3_x - p0_x - c_x - b_x;

    float c_y = 3 * (p1_y - p0_y);
    float b_y = 3 * (p2_y - p1_y) - c_y;
    float a_y = p3_y - p0_y - c_y - b_y;

    float x = (a_x * powf(t, 3)) + (b_x * powf(t, 2)) + (c_x * t) + p0_x;
    float y = (a_y * powf(t, 3)) + (b_y * powf(t, 2)) + (c_y * t) + p0_y;

    return y;
}