SdlSandbox/sdl2/metaBallsVisualizer/Graphics/MetaField.cpp

//
// Created by jovian on 09/10/17.
//

#include "MetaField.h"

MetaField::MetaField() {
    clean();
}

void MetaField::clean() {
    for (int i(0); i < WIN_H; i++)
        for (int j(0); j < WIN_W; j++) {
            m_field[i][j] = 0.0;
        }
}

void MetaField::binary(bool mat[WIN_H][WIN_W], float ceil) {
    for (int i(0); i < WIN_H; i++)
        for (int j(0); j < WIN_W; j++) {
            mat[i][j] = (m_field[i][j] > ceil);
        }
}

void MetaField::disturb(int y, int x, float weight) {
    // Escape
    if (x < 0 || x >= WIN_W || y < 0 || y >= WIN_H)
        return;

    // todo Disturb
    for (int i(0); i < WIN_H; i++)
        for (int j(0); j < WIN_W; j++) {
            m_field[i][j] += weight / ((y - i)*(y - i) + (x - j)*(x - j));
        }
}