Good morning
I just took over the plasma effect project
I'll give you my code, it will be simpler
I actually got rid of the bufferedimage
the code works but I have a little trouble with the if
for the moment the colors are displayed in full window
but do not give color spots
but this is due to the plasma, I think?
Thank you for your help
import greenfoot.*;
/**
* Plasma_Effect
*
* @author (Ronald)
* @version (Plasma_Effect)
*/
public class PlasmaEffectWorld extends World {
float[][] plasma;
float hueShift = 255;
private int timer = 42;
GreenfootImage background = getBackground();
public PlasmaEffectWorld() {
super(600, 600, 1);
background.setColor(Color.WHITE);
background = new GreenfootImage(getWidth(), getHeight());
plasma = createPlasma(getHeight(), getWidth());
}
public void act() {
timer--;
if (timer == 0) {
hueShift = (hueShift + 0.02f) % 1;
repaint();
}
started();
drawPlasma();
}
public float[][] createPlasma(int w, int h) {
float[][] buffer = new float[h][w];
for (int y = 0; y < h; y++)
for (int x = 0; x < w; x++) {
double value = Math.sin(x / 16.0);
value += Math.sin(y / 8.0);
value += Math.sin((x + y) / 16.0);
value += Math.sin(Math.sqrt(x * x + y * y) / 8.0);
value += 4; // shift range from -4 .. 4 to 0 .. 8
value /= 8; // bring range down to 0 .. 1
// requires VM option -ea
assert (value >= 0.0 && value <= 1.0) : "Hue value out of bounds";
buffer[y][x] = (float) value;
}
return buffer;
}
public void drawPlasma() {
GreenfootImage gfim = new GreenfootImage(getWidth(), getHeight());
int h = plasma.length;
int w = plasma[0].length;
for (int y = 0; y < h; y++)
for (int x = 0; x < w; x++) {
//float hue = hueShift + plasma[y][x] % 1;
//img.setRGB(x, y, Color.HSBtoRGB(hue, 1, 1));
//Color color = new Color((int) hueShift + (int) plasma[y][x] % 1,1,1);
//background.setColorAt(x, y, color);
float hue = hueShift + plasma[y][x] % 1;
Color red = new Color((int) hueShift + (int) plasma[y][x] % 1,1,1);
Color green = new Color(1, (int) hueShift + (int) plasma[y][x] % 1,1);
Color blue = new Color(1, 1, (int) hueShift + (int) plasma[y][x] % 1);
if (hueShift <= 255) background.setColorAt(x, y, red); //Color.CYAN
else if (hueShift <= 170) background.setColorAt(x, y, green); //Color.LIGHT_GRAY);
else background.setColorAt(x, y, blue); //Color.GRAY);
}
gfim.drawImage(background, 0, 0);
setBackground(gfim);
}
}
