render_polar_lookup_table()

void fl::render_polar_lookup_table ( float cx, float cy, fl::vector< fl::vector< float > > & polar_theta, fl::vector< fl::vector< float > > & distance, int num_x, int num_y )

inline

Definition at line 27 of file engine_core.h.

                                                            {
    polar_theta.resize(num_x, fl::vector<float>(num_y, 0.0f));
    distance.resize(num_x, fl::vector<float>(num_y, 0.0f));
 
    for (int xx = 0; xx < num_x; xx++) {
        for (int yy = 0; yy < num_y; yy++) {
            float dx = xx - cx;
            float dy = yy - cy;
            distance[xx][yy] = fl::hypotf(dx, dy);
            polar_theta[xx][yy] = fl::atan2f(dy, dx);
        }
    }
}

References atan2f(), and hypotf().

Referenced by fl::Engine::init().

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