TextMask
Ecng.Drawing
A line of text rendered for a canvas: how opaque the text is at every pixel of the box it takes.
构造函数
TextMask
public TextMask(int left, int top, int width, byte[] opacity)textMask = TextMask(left, top, width, opacity)- left
- The column of the canvas the box starts at.
- top
- The row of the canvas the box starts at.
- width
- Width of the box in pixels.
- opacity
- Opacity of the text, 0..255, for every pixel of the box row by row.
方法
Draw
public void Draw(RasterImage image)textMask.Draw(image)Draws the line in white onto a picture of the size it was rendered for.