function drawImage():void

{

        var a0:Number = angle + diagonalAngle;

        vertices[0] = Math.cos(a0) * diagonalSemiLength + center.x;

        vertices[1] = Math.sin(a0) * diagonalSemiLength + center.y;

 

        var a1:Number = angle + Math.PI - diagonalAngle;

        vertices[2] = Math.cos(a1) * diagonalSemiLength + center.x;

        vertices[3] = Math.sin(a1) * diagonalSemiLength + center.y;

 

        var a2:Number = angle - Math.PI + diagonalAngle;

        vertices[4] = Math.cos(a2) * diagonalSemiLength + center.x;

        vertices[5] = Math.sin(a2) * diagonalSemiLength + center.y;

 

        var a3:Number = angle - diagonalAngle;

        vertices[6] = Math.cos(a3) * diagonalSemiLength + center.x;

        vertices[7] = Math.sin(a3) * diagonalSemiLength + center.y;

 

        canvas.graphics.clear();

        canvas.graphics.beginBitmapFill(image, null, false, true);

        canvas.graphics.drawTriangles(vertices, indices, uvtData);

}