Draws a shape onto the Canvas.

[Visual Basic]
Function Canvas.DrawShape(inShape As String, inParams As String) As System.Drawing.Rectangle

[C#]
System.Drawing.Rectangle Canvas.DrawShape(string inShape, string inParams);

Allows you to draw a shape onto the Canvas. The following shapes are available.

• "rectangle" or "rect"
• "line"
• "polygon" or "poly" (this is a closed object)
• "roundrectangle" or "roundrect"
• "oval"

Rectangles, round rectangles and ovals are drawn to fill the rectangle supplied in the Parameter String.

Lines and polygons require a Points parameter to be supplied to specify where the corners of the shape are.

Lines which are filled become polygons (i.e. the end points are joined).

Canvas DrawData function.

[Visual Basic]
Dim ca As New Canvas
Dim inpath, outpath As String
inpath = Server.MapPath("rez/layers.psd")
outpath = Server.MapPath("drawshape.jpg")
ca.PaintColor = System.Drawing.Color.Blue
ca.PenSize = 4
ca.Width = 250
ca.Height = 250
ca.DrawShape("oval", "Pos=10,10 Size=100,100 Operation=both")
ca.DrawShape("line", "Points=120,120,200,170,130,200 Operation=draw OpenGL=true")
ca.DrawShape("roundrect", "Pos=20,120 Size=80,80 Operation=draw OpenGL=true")
ca.DrawShape("poly", "Points=120,20,200,40,120,100 Operation=draw")
ca.DrawShape("oval", "Pos=0,0 Size=250,250 Operation=draw OpenGL=true")
ca.DrawShape("rect", "Pos=0,0 Size=250,250 Operation=draw")
ca.SaveAs(outpath, "Quality=high")

[C#]
Canvas ca = new Canvas();
string inpath = Server.MapPath("rez/layers.psd");
string outpath = Server.MapPath("drawshape.jpg");
ca.PaintColor = System.Drawing.Color.Blue;
ca.PenSize = 4;
ca.Width = 250;
ca.Height = 250;
ca.DrawShape("oval", "Pos=10,10 Size=100,100 Operation=both");
ca.DrawShape("line", "Points=120,120,200,170,130,200 Operation=draw OpenGL=true");
ca.DrawShape("roundrect", "Pos=20,120 Size=80,80 Operation=draw OpenGL=true");
ca.DrawShape("poly", "Points=120,20,200,40,120,100 Operation=draw");
ca.DrawShape("oval", "Pos=0,0 Size=250,250 Operation=draw OpenGL=true");
ca.DrawShape("rect", "Pos=0,0 Size=250,250 Operation=draw");
ca.SaveAs(outpath, "Quality=high");

The code draws a number of shapes using a number of different options. Note that the top two shapes are drawn without OpenGL and the bottom two with it.

drawshapes.jpg