// Create an array of 5 points for the polygon.
ImGearPoint[] igPoints = new ImGearPoint[5];
igPoints[0] = new ImGearPoint(20, 20);
igPoints[1] = new ImGearPoint(200, 40);
igPoints[2] = new ImGearPoint(200, 60);
igPoints[3] = new ImGearPoint(120, 120);
igPoints[4] = new ImGearPoint(20, 40);
// Setup color for the polygon fill.
ImGearRGBQuad igRGBQuadFill = new ImGearRGBQuad(40, 200, 40);
// Setup color for the polygon border.
ImGearRGBQuad igRGBQuadBorder = new ImGearRGBQuad(0, 0, 0);
// Create polygon with a solid border of width 10, and 33% opacity
ImGearARTPolygon igARTPolygon = new ImGearARTPolygon(
igPoints, igRGBQuadFill, igRGBQuadBorder,
ImGearARTPenStyle.SOLID, 10, (int)(0.33 * 255)
);
// Add the annotation to the ARTPage.
igARTPage.AddMark(igARTPolygon, ImGearARTCoordinatesType.IMAGE_COORD);