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OpenGL Quads

Roan requested to merge feature/quads into develop

Requires #22

Implements a new type of Quads, rotated quads. They are defined by a center point, width, height and rotation. afbeelding

Notable:

  • The old quad style is still available, but has been renamed to drawAAQuad (axis aligned quad).
  • If we run into performance issues later on it should be possible to reuse the rotation matrix or to precompute specific matrices. But for now I suggest that we prefer clarity over performance.
  • fixes #5 (closed)

Method overview:

  • [public] drawRotatedQuad(x, y, width, height, rotation, color)
  • [public] drawAAQuad(x, y, width, height, color)
  • [private] drawQuadImpl(x1, y1, x2, y2, x3, y3, x4, y4, color)

I feel like I'm done with Linear Algebra for this week...

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