Drawing objects rotated, transformed and scaled and flipped

public abstract class DrawObject
{
    public float    TransformX = 0f, TransformY = 0f;
    public float    Rotation = 0f;
    public float    Scale = 1f;
    public float    CenterX = 0f, CenterY = 0f;
}

public class GraphicsHandler
{
    public static void DrawObject(DrawObject obj, Canvas canvas, Matrix matrix, float scaleX, float scaleY)
    {

        if (obj == null)
            return;

        DrawObject(obj, canvas, matrix, scaleX, scaleY, 1f, 1f);

        if (obj.DrawingMode == DrawMode.VMirror || obj.DrawingMode == DrawMode.VHMirror)
            DrawObject(obj, canvas, matrix, scaleX, scaleY, -1f, 1f);
        if (obj.DrawingMode == DrawMode.HMirror || obj.DrawingMode == DrawMode.VHMirror)
            DrawObject(obj, canvas, matrix, scaleX, scaleY, -1f, -1f);
        if (obj.DrawingMode == DrawMode.VHMirror)
            DrawObject(obj, canvas, matrix, scaleX, scaleY, 1f, -1f);

    }

    // scaleX and scaleY are the scale of the screen. If the original size is 1000x1000 but this is rendered on a 500x500 screen
        // the scale is 0.5 and 0.5
        // sX and and sY are the flip values

    public static void DrawObject(DrawObject obj, Canvas canvas, Matrix matrix, float scaleX, float scaleY, float sx, float sy)
    {
        canvas.save();

        try
        {
            if (matrix == null)
                matrix = new Matrix();

            matrix.reset();
            matrix.setScale(scaleX, scaleY);
            matrix.postScale(sx, sy, (canvas.getWidth())*0.5f, (canvas.getHeight())*0.5f);
            canvas.setMatrix(matrix);
        }
        catch (Exception ex) { }

        try
        {
            canvas.rotate(obj.Rotation, obj.CenterX + obj.TransformX, obj.CenterY + obj.TransformY);
            canvas.translate(obj.TransformX, obj.TransformY);
            canvas.scale(obj.Scale, obj.Scale, obj.CenterX, obj.CenterY);

            // each DrawObject handles it's own drawing: Rectangle, Path and suchs...
            obj.Draw(canvas);
        }
        catch (Exception ex) { }

        canvas.restore();
    }
}