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Fragment.cs
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Fragment.cs
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using System;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Drawing.Imaging;
namespace Fractals
{
public class Fragment
{
public const int FragmentSize = 16;
public const int BitmapSize = Fragment.FragmentSize + 1;
Fragment childLT;
Fragment childRT;
Fragment childLB;
Fragment childRB;
public Fragment ChildLT {
get {
return childLT;
}
set {
childLT = value;
}
}
public Fragment ChildRT {
get {
return childRT;
}
set {
childRT = value;
}
}
public Fragment ChildLB {
get {
return childLB;
}
set {
childLB = value;
}
}
public Fragment ChildRB {
get {
return childRB;
}
set {
childRB = value;
}
}
// NOTE: Fragmet always has half the size of parent
ColorIndex[,] data = new ColorIndex[FragmentSize, FragmentSize];
bool done;
int maxColorDifference = 255;
int depth;
public int MaxColorDifference {
get {
return maxColorDifference;
}
}
public int Depth {
get {
return depth;
}
}
public Fragment(int depth)
{
this.depth = depth;
}
public void MakeChilds()
{
if (!HasAllChilds) {
childLT = new Fragment(depth + 1);
childRT = new Fragment(depth + 1);
childLB = new Fragment(depth + 1);
childRB = new Fragment(depth + 1);
}
}
public bool HasAllChilds {
get {
return childLT != null && childRT != null && childLB != null && childRB != null;
}
}
public ColorIndex GetColorIndex(int x, int y)
{
return data[x, y];
}
public void SetColorIndex(int x, int y, ColorIndex val)
{
data[x, y] = val;
}
public void SetColorIndexes(Fractal fractal, double X, double Y, double size)
{
if (!done) {
for(int y = 0; y < Fragment.FragmentSize; y += 1) {
for(int x = 0; x < Fragment.FragmentSize; x += 1) {
ColorIndex index = fractal.Equation.GetColorIndex(X + x * size, Y + y * size);
SetColorIndex(x, y, index);
}
}
maxColorDifference = GetMaxColorDifference(fractal.ColorMap);
done = true;
}
}
public int GetMaxColorDifference(ColorMap colorMap)
{
int minR, minG, minB;
int maxR, maxG, maxB;
minR = minG = minB = 256;
maxR = maxG = maxB = 0;
for(int y = 0; y < Fragment.FragmentSize; y += 1) {
for(int x = 0; x < Fragment.FragmentSize; x += 1) {
ColorIndex index = GetColorIndex(x, y);
Color color = colorMap.GetColorFromIndex(index);
minR = Math.Min(minR, color.R);
minG = Math.Min(minG, color.G);
minB = Math.Min(minB, color.B);
maxR = Math.Max(maxR, color.R);
maxG = Math.Max(maxG, color.G);
maxB = Math.Max(maxB, color.B);
}
}
return Math.Max(maxR - minR, Math.Max(maxG - minG, maxB - minB));
}
public Color GetColor(ColorMap colorMap, int x, int y)
{
return colorMap.GetColorFromIndex(GetColorIndex(x, y));
}
public Color GetAntiAliasedColor(ColorMap colorMap, int x, int y, int levelsOfAA)
{
if (levelsOfAA <= 0) {
return GetColor(colorMap, x, y);
} else {
Fragment srcF;
int srcX = (x*2)%Fragment.FragmentSize;
int srcY = (y*2)%Fragment.FragmentSize;
if (x < Fragment.FragmentSize/2) {
if (y < Fragment.FragmentSize/2) {
srcF = ChildLT;
} else {
srcF = ChildLB;
}
} else {
if (y < Fragment.FragmentSize/2) {
srcF = ChildRT;
} else {
srcF = ChildRB;
}
}
if (srcF != null && srcF.done) {
Color color1 = srcF.GetAntiAliasedColor(colorMap, srcX + 0, srcY + 0, levelsOfAA - 1);
Color color2 = srcF.GetAntiAliasedColor(colorMap, srcX + 0, srcY + 1, levelsOfAA - 1);
Color color3 = srcF.GetAntiAliasedColor(colorMap, srcX + 1, srcY + 0, levelsOfAA - 1);
Color color4 = srcF.GetAntiAliasedColor(colorMap, srcX + 1, srcY + 1, levelsOfAA - 1);
int r = (color1.R + color2.R + color3.R + color4.R) / 4;
int g = (color1.G + color2.G + color3.G + color4.G) / 4;
int b = (color1.B + color2.B + color3.B + color4.B) / 4;
return Color.FromArgb(r,g,b);
} else {
return GetColor(colorMap, x, y);
}
}
}
public uint[,] MakeImage(ColorMap colorMap)
{
uint[,] image = new uint[Fragment.BitmapSize, Fragment.BitmapSize];
for(int y = 0; y < Fragment.BitmapSize; y++) {
for(int x = 0; x < Fragment.BitmapSize; x++) {
uint k = 0;
//k = 0x000F00 * (uint)(depth + 4);
//k = 0x000100 * (uint)maxColorDifference;
// if (x % 2 == 0 || y % 2 == 0) {
// k = 0x7F0000;
// }
// if (x == 0 && y == 0) {
// *ptr = 0xFF0000; ptr++; continue;
// }
if (x == Fragment.FragmentSize) {
image[x,y] = image[x-1,y];
} else if (y == Fragment.FragmentSize) {
image[x,y] = image[x,y-1];
} else {
image[x,y] = k + (uint)GetAntiAliasedColor(colorMap, x, y, 3).ToArgb();
}
}
}
return image;
}
}
}