Drawing triangle and quad strips

Making my way through the Drawing triangle and quad strips recipe from the Processing 2 Creative programming cookbook source code on GitHub.

In this recipe I learned how to use the QUAD_STRIP and TRIANGLE_STRIP parameters inside the beginShape function to draw triangle or quad 3D geometry to screen. With some work, QUAD_STRIP and TRIANGLE_STRIP could be used to draw 3D grass and lawn geometry on screen for Sew, Grow and Mow as an alternative to pre-modelled geometry. Maybe.


This code draws the QUAD_STRIP and then rotates it around the centre of the screen. I particularly like how vertex (x1, y1, 0) and vertex(x2, y2, 50 + i) are used to add two vertices to the shapes with each iteration of the for loop.


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