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Category Archives: transformations
Let the user draw rotated skewed polygons in C#
The example Let the user draw rotated polygons with right angles in C# draws polygons with edges that are parallel or perpendicular to a baseline. This example is very similar except its polygons have edges that are parallel to one … Continue reading
Let the user draw rotated polygons with right angles in C#
This example lets the user draw rotated polygons where all edges are either parallel or perpendicular to a defined baseline direction. As a result, all of the polygon’s angles are right angles. (And yes, I know that the polygons aren’t … Continue reading
Map device coordinates to world coordinates in C#
Sometimes it’s convenient to draw in one coordinate system (called world coordinates) and map those coordinates to the screen’s device coordinates. The example Map points between coordinate systems in C# shows how to do this in C#. For example, the … Continue reading
Draw improved text on a curve in C#
This example shows how to draw improved text along a curved path. The example Draw text on a curve in C# shows how to draw text along a curved path. Unfortunately the spacing between the letters is pretty mediocre in … Continue reading
Interactively rotate images in C#
The example Rotate images by an arbitrary angle in C# explains how you can rotate an image by a angle specified in a TextBox. This example lets you click and drag around the image’s center to specify the angle of … Continue reading
Rotate images in C#
This program uses the following RotateBitmap method to rotate an image. // Return a bitmap rotated around its center. private Bitmap RotateBitmap(Bitmap bm, float angle) { // Make a Matrix to represent rotation // by this angle. Matrix rotate_at_origin = … Continue reading
Easily map drawing coordinates in C#
The example Map points between coordinate systems in C# shows several ways you can map drawing coordinates to screen coordinates. They all work but these sorts of coordinate conversions are really common if you’re doing more advanced graphics so I … Continue reading
Posted in drawing, graphics, transformations
Tagged C#, C# programming, device coordinates, drawing, drawing coordinates, example, example program, graphics, map coordinates, Matrix, rotate, rotation, scale, scaling, transform, transformations, translate, translation, Windows Forms programming, world coordinates
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