drawPoint

Drawpoint is a basic operation in computer graphics used to render a single point at specified coordinates on a raster image or display. In raster graphics, a point corresponds to one pixel, making drawpoint a low-level primitive that underpins more complex rendering tasks such as lines, shapes, and markers. The term is used as a function name or method in various graphics libraries, often implemented as drawPoint(x, y, color) or as an alternative like setPixel or putPixel.

In practice, drawpoint can appear in different contexts. Some APIs expose a direct drawPoint function, while others implement the same effect by drawing a degenerate line (from (x, y) to (x, y)) or by filling a 1-by-1 rectangle. The supplied color or current drawing color determines the pixel’s appearance. In vector graphics workflows, a point primitive may be rasterized to the corresponding pixel during the rasterization stage, serving as a simple test marker or a visualization element.

Coordinate systems for drawpoint are typically integer pixel coordinates, reflecting the discrete nature of digital images. Some environments support floating-point coordinates and sub-pixel rendering through anti-aliasing or shading, which can influence the perceived position of a drawn point. Point size is usually fixed to one pixel, though certain APIs allow a configurable size or replacement by multi-pixel markers.

See also: setPixel, putPixel, drawLine, rasterization, pixel, anti-aliasing.