blob: f072805c4a896c7c6daf2114f62c771a8784ebbb (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
|
/*
* Copyright (c) 2015 Camil Staps
*/
package com.camilstaps.mandelbrot;
import fractals.Grid;
import fractals.Mandelbrot;
/**
*
* @author camilstaps
*/
public class MandelbrotController {
private final MandelbrotProvider mandelbrotProvider;
private final Grid grid;
public MandelbrotController(MandelbrotProvider mp, Grid grid) {
mandelbrotProvider = mp;
this.grid = grid;
}
public double getX(int x_on_screen) {
double centerX = mandelbrotProvider.getCenterX();
double scale = mandelbrotProvider.getScale();
int grid_w = grid.getWidth();
double min_x = centerX - grid_w / scale / 2,
max_x = centerX + grid_w / scale / 2;
return min_x + (((float) x_on_screen) / grid_w) * (max_x - min_x);
}
public double getY(int y_on_screen) {
double centerY = mandelbrotProvider.getCenterY();
double scale = mandelbrotProvider.getScale();
int grid_h = grid.getHeight();
double min_y = centerY - grid_h / scale / 2,
max_y = centerY + grid_h / scale / 2;
return min_y + (((float) y_on_screen) / grid_h) * (max_y - min_y);
}
public void redraw() {
int repetitions = mandelbrotProvider.getRepetitions();
int grid_w = grid.getWidth(), grid_h = grid.getHeight();
for (int i = 0; i < grid_w; i++) {
for (int j = 0; j < grid_h; j++) {
double mandel = ((double) Mandelbrot.mandelNumber(getX(i), getY(j), repetitions) * Math.PI) / repetitions;
int[] color = {
(int) (255 * Math.sin(mandel)),
(int) (255 * Math.sin(mandel + Math.PI / 3)),
(int) (255 * Math.sin(mandel + 2 * Math.PI / 3))};
grid.setPixel(i, j, color);
}
}
}
public interface MandelbrotProvider {
public double getCenterX();
public double getCenterY();
public double getScale();
public int getRepetitions();
}
}
|
