public static void Main()
{
//TEST
//this is low-level scanline rasterizer
//1. create vertex store
VertexStore vxs = new VertexStore();
vxs.AddMoveTo(10, 10);
vxs.AddLineTo(50, 10);
vxs.AddLineTo(50, 50);
vxs.AddLineTo(10, 50);
vxs.AddCloseFigure();
//2. create scanline rasterizer
ScanlineRasterizer sclineRas = new ScanlineRasterizer();
sclineRas.AddPath(vxs);
//3. create destination bitmap
DestBitmapRasterizer destBmpRasterizer = new DestBitmapRasterizer();
//4. create 32bit rgba bitmap blender
MyBitmapBlender myBitmapBlender = new MyBitmapBlender();
//5. create output bitmap
using (MemBitmap membitmap = new MemBitmap(800, 600))
{
//6. attach target bitmap to bitmap blender
myBitmapBlender.Attach(membitmap);
//7. rasterizer sends the vector content inside sclineRas
// to the bitmap blender and
destBmpRasterizer.RenderWithColor(myBitmapBlender, //blender+ output
sclineRas, //with vectors input inside
new ScanlinePacked8(),
Color.Red);
//8. the content inside membitmap is just color image buffer
// you can copy it to other image object (eg SkImage, Gdi+ image etc)
//... example ...
using (System.Drawing.Bitmap bmp = new System.Drawing.Bitmap(membitmap.Width, membitmap.Height))
{
IntPtr mem_ptr = membitmap.GetRawBufferHead();
System.Drawing.Imaging.BitmapData bmpdata = bmp.LockBits(new System.Drawing.Rectangle(0, 0, bmp.Width, bmp.Height), System.Drawing.Imaging.ImageLockMode.WriteOnly, System.Drawing.Imaging.PixelFormat.Format32bppArgb);
unsafe
{
MemMx.memcpy((byte *)bmpdata.Scan0, (byte *)mem_ptr, membitmap.Width * membitmap.Height * 4);
}
bmp.UnlockBits(bmpdata);
bmp.Save("test01.png");
}
}
}