public Canvas(int w, int h)
{
this.w = w;
this.h = h;
sourceBmp = new MyPixel[w, h];
bmp = new Bitmap(w, h);
}
public Canvas(int w, int h)
{
this.w = w;
this.h = h;
sourceBmp = new MyPixel[h][];
for (int y = 0; y < h; y++)
{
sourceBmp[y] = new MyPixel[w];
}
sourceChange = new bool[h];
bmp = new Bitmap(w, h);
line = new Color[w];
}