[C #] Graphics Pan Zoom rotation

"Pan"

private void Btntranslate_click (object sender, EventArgs e)        {            Graphics graphics = this. CreateGraphics ();            Red Pen Pen Pen            = new Pen (color.red, 5);            Rectangle rect = new Rectangle (0, 0, N, a);            A rectangular graphics with a red stroke            . DrawRectangle (pen, rect);            Move 100 to pan left to translate the            graphics down. TranslateTransform (100,50);            Blue Pen pen            . Color = Color.Blue;            Redraw the translated rectangular graphics with a blue pen            . DrawRectangle (pen, rect);            Graphics. Dispose ();            Pen. Dispose ();        }

"Zoom"

private void Btnscale_click (object sender, EventArgs e)        {            Graphics graphics = this. CreateGraphics ();            Red Pen Pen Pen            = new Pen (color.red, 5);            Rectangle rect = new Rectangle (0, 0, N, a);            A rectangular graphics with a red stroke            . DrawRectangle (pen, rect);            Graphics. ScaleTransform (0.5f, 2);            Blue Pen pen            . Color = Color.Blue;            Redraw the translated rectangular graphics with a blue pen            . DrawRectangle (pen, rect);            Graphics. Dispose ();            Pen. Dispose ();        }

Zoom in half and zoom in one more times

"Rotate"

private void Btntraslate_click (object sender, EventArgs e)        {            Graphics graphics = this. CreateGraphics ();            Red Pen Pen Pen            = new Pen (color.red, 5);            Rectangle rect = new Rectangle (0, 0, N, a);            A rectangular graphics with a red stroke            . DrawRectangle (pen, rect);            Graphics. TranslateTransform (200,0);            Graphics. RotateTransform (+);            Blue Pen pen            . Color = Color.Blue;            Redraw the translated rectangular graphics with a blue pen            . DrawRectangle (pen, rect);            Graphics. Dispose ();            Pen. Dispose ();        }

The coordinate origin is the upper-left point of the rectangle.

[C #] Graphics translation Zoom rotation