繪製紋理三角形

Question

我有一個圖像和三個頂點與它的位置和它的texcoord。

如何在picturebox中繪製紋理三角形？

這是一張說明它是什麼：

Answer 1

您可以使用GraphicsPath和TextureBrush：

// Create the triangle 
GraphicsPath p = new GraphicsPath(); 
p.AddLine(triangleVertex1, triangleVertex2); 
p.AddLine(triangleVertex2, triangleVertex3); 
p.CloseFigure(); 

// Draw the triangle 
Bitmap b = new Bitmap(pictureBox.ClientSize.Width, pictureBox.ClientSize.Height); 

using(Graphics g = Graphics.FromImage(b), TextureBrush t = new TextureBrush(myImage)) { 
    g.FillPath(t, p); 
} 

// Finally, set the PictureBox's image 
pictureBox.Image = b;