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Windows GDI has these functions:
MoveTo();
LineTo();
They accept coordinates where to start drawing and where to stop drawing.
But how are these functions implemented?? (especially LineTo)
Do they need to calculate all points between point A and point B??
How is this line drawn exactly??
Yes, they calculate each individual point between A and B.
The most common way to do this efficiently is known as Bresenham’s Line Algorithm.
Note that Windows LineTo does not draw the last point. When line segments are drawn one after another, this prevents the endpoints from being double drawn.