using System;
using System.Drawing;
using System.Drawing.Imaging;
using System.Runtime.InteropServices;
namespace Puppy
{
public class DirectBitmap : IDisposable
{
public Bitmap Bitmap { get; private set; }
public Int32[] Bits { get; private set; }
public bool Disposed { get; private set; }
public int Width { get; private set; }
public int Height { get; private set; }
protected GCHandle BitsHandle { get; private set; }
public DirectBitmap(int width, int height)
{
Width = width;
Height = height;
Bits = new Int32[width * height];
BitsHandle = GCHandle.Alloc(Bits, GCHandleType.Pinned);
Bitmap = new Bitmap(width, height, width * 4, PixelFormat.Format32bppPArgb, BitsHandle.AddrOfPinnedObject());
}
public void Clear(Color color) {
int t = Width * Height;
Int32 c = color.ToArgb();
for (int i = 0; i < t; i++) Bits[i] = c;
}
public void SetPixel(int x, int y, Color color)
{
int index = x + (y * Width);
Bits[index] = color.ToArgb();
}
public Color GetPixel(int x, int y)
{
int index = x + (y * Width);
return Color.FromArgb(Bits[index]);
}
public void VertLine(int x, int y1, int y2, Color color)
{
int index = x + (y1 * Width);
Int32 c = color.ToArgb();
for (int y = y1; y <= y2; y++)
{
Bits[index] = c;
index += Width;
}
}
public void VertLineDiagram(int x, int y1, int y2, int baseRes, Color color)
{
int index = x + (y1 * Width);
int ofs = baseRes * Width;
Int32 c = color.ToArgb();
for (int y = y1; y <= y2; y++)
{
if (y > baseRes - x) Bits[index] = c;
else if (y < x) Bits[index + ofs] = c;
else Bits[index + baseRes] = c;
index += Width;
}
}
public void DiagramRearrange(int baseRes)
{
int index = 0;
int ofs = baseRes * Width;
for (int y = 0; y < Height; y++)
{
for (int x = 0; x < Width; x++)
{
if (y >= baseRes - x)
{
if (y >= x + baseRes) Bits[index] = 0;
else if (y > 2 * baseRes - x) Bits[index] = 0;
else if (y < x - baseRes) Bits[index] = 0;
}
else if (y < x)
{
Bits[index + ofs] = Bits[index];
Bits[index] = 0;
}
else
{
Bits[index + baseRes] = Bits[index];
Bits[index] = 0;
}
index++;
}
}
}
public void Dispose()
{
if (Disposed) return;
Disposed = true;
Bitmap.Dispose();
BitsHandle.Free();
}
}
}