Tutorial by Topics: drawing

It's important to understand the basic concept of the surface view before using: It's basically just a hole in the current window Native UI can be placed on top of it Drawing is done using a dedicated, non UI thread Drawing is not hardware accelerated Uses two buffers: One is currently show...

pygame.draw.rect(Surface, color, Rect, width=0) pygame.draw.polygon(Surface, color, pointlist, width=0) pygame.draw.circle(Surface, color, pos, radius, width=0) pygame.draw.ellipse(Surface, color, Rect, width=0) pygame.draw.arc(Surface, color, Rect, start_angle, stop_angle, width=1) pygame.dr...

In Processing, drawing shapes is key to the program. Otherwise, nothing would appear on the screen. This section will tell you how basic shapes are drawn. line(float x1, float y1, float x2, float y2) line(float x1, float y1, float z1, float x2, float y2, float z2) ellipse(float x, float y, f...

In OpenCV, one can draw numerous shapes such as point, line, circle, ..., etc. There is an optional for filling a shape. The following code is self-explanatory which shows how shapes are drawn.