Draw polygon #10
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Draw polygon #10
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dektar
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Feb 10, 2021
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dektar
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It'll be nice to have this functionality! Some comments below.
| * |color|. Each vertex is represented by it's x and y coordinate, and are | ||
| * listed sequentially in the vector. For example, a polygon with three | ||
| * vertices (0, 0), (0, 2), (2,1) is represented as a vector of integers | ||
| * {0, 0, 0, 2, 2, 1}. The last vertex will connect with the first vertex in |
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It's a little hard to read this polygon vector, especially for large numbers of vertices. What do you think of making a simple graphics::Point class and having a std::vectorgraphics::Point instead?
You could also add a DrawTriangle that takes int x1, int y1, int x2, int y2, int x3, int y3 as that's probably the most common polygon that would be used.
| } | ||
| } | ||
| std::vector<int> points = {20, 20, 20, 22, 22, 21}; | ||
| image.DrawPolygon(points, red); |
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can you add some polygon-speicifc tests: first, that drawing a polygon clockwise is the same as drawing the same thing counterclockwise? second, if drawing a rect is the same as drawing a polygon with four points?
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I hope I do the library justice :)