3.6 Draw Happy Face

The DrawHappyFace method is an example of drawing oval and constructing path from a line and Bezier curve.

// Draw Happy Face
private void DrawHappyFace()
{
    // save graphics state
    Contents.SaveGraphicsState();

    // translate coordinate origin to the center of the happy face
    Contents.Translate(4.25, 7.5);

    // change nonstroking (fill) color to yellow
    Contents.SetColorNonStroking(Color.Yellow);

    // draw happy face yellow oval
    Contents.DrawOval(-1.5, -1.0, 3.0, 2.0, PaintOp.Fill);

    // set line width to 0.2" this is the black circle around the eye
    Contents.SetLineWidth(0.2);

    // eye color is white with black outline circle
    Contents.SetColorNonStroking(Color.White);
    Contents.SetColorStroking(Color.Black);

    // draw eyes
    Contents.DrawOval(-0.75, 0.0, 0.5, 0.5, PaintOp.CloseFillStroke);
    Contents.DrawOval(0.25, 0.0, 0.5, 0.5, PaintOp.CloseFillStroke);

    // mouth color is black
    Contents.SetColorNonStroking(Color.Black);

    // draw mouth by creating a path made of one line and one Bezier curve 
    Contents.MoveTo(-0.6, -0.4);
    Contents.LineTo(0.6, -0.4);
    Contents.DrawBezier(0.0, -0.8, 0, -0.8, -0.6, -0.4);

    // fill the path with black color
    Contents.SetPaintOp(PaintOp.Fill);

    // restore graphics sate
    Contents.RestoreGraphicsState();
    return;
}