rasterizaci

Rasterization is a fundamental process in computer graphics used to convert vector graphics into a raster image, also known as a bitmap. Vector graphics are defined by mathematical equations describing geometric primitives like points, lines, and polygons. Rasterization essentially takes these geometric descriptions and translates them into a grid of pixels, where each pixel is assigned a specific color.

The process typically begins with a 3D scene or 2D vector data. This data is then projected onto a 2D plane, which represents the screen or image. For each primitive (like a triangle), the rasterization algorithm determines which pixels on the screen are covered by that primitive. This involves calculating the intersection of the primitive's boundaries with the pixel grid.

Once the covered pixels are identified, the algorithm determines the color for each pixel. This often involves interpolation of color values from the vertices of the primitive. For 3D graphics, techniques like texture mapping and shading are applied during rasterization to add detail and realism. The final output is a bitmap image, which is a grid of colored pixels that can be displayed on a screen or saved to a file. Rasterization is a computationally intensive process, and efficient algorithms are crucial for real-time graphics rendering.