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2D Cartesian Coordinate System

Below are two diagrams showing how the 2D Cartesian coordinate system works.

DirectX 8 Programming Tutorial
DirectX 8 Programming Tutorial

In the examples above, we have an x-axis and a y-axis. Along each of these axis are numbers starting from zero (at the origin) and increasing the further along the axis you go. So, to specify a single point, all you need is an x value and a y value (see fig 2.1). It follows then, to represent a triangle you need three of these points that are joined together, each with an x value and a y value (fig 2.2). Notice that when we write a coordinate, it is always in the form: (x, y).


Vertices | DirectX 8 Programming Tutorial | 3D Cartesian Coordinate System







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