vanishing points

 In computer graphics, vanishing points refer to the same concept as in traditional drawing and painting techniques. They are the points where parallel lines appear to converge in a perspective projection, and they are used to create the illusion of depth and distance in a two-dimensional image.

In 3D computer graphics, virtual scenes are constructed using geometric primitives such as points, lines, and polygons. The position of the camera or viewpoint is specified, and the scene is then projected onto a 2D plane, resulting in a perspective image. The vanishing points in the resulting image are determined by the position and orientation of the camera.

Vanishing points are used in computer graphics to create realistic and convincing images. By accurately modeling the perspective of a scene, it is possible to create images that accurately depict the relative positions and sizes of objects in a 3D space. Additionally, the use of vanishing points can help to create compelling and visually engaging images that draw the viewer's eye and convey a sense of depth and realism.

In perspective drawing, the number and position of vanishing points depend on the type of perspective being used. Here are the different perspectives of vanishing points:

One-point perspective: In this perspective, all parallel lines in the scene converge to a single vanishing point on the horizon line. One-point perspective is commonly used in architectural and interior design drawings.

Two-point perspective: In this perspective, two vanishing points are used to create the illusion of depth and distance in a scene. The two vanishing points are located on the horizon line and are typically used for scenes that have two sets of parallel lines, such as roads or buildings.

Three-point perspective: In this perspective, three vanishing points are used to create the illusion of depth and distance in a scene. The third vanishing point is located above or below the horizon line and is typically used for scenes that have extreme angles or viewpoints, such as looking up at a tall building.

Each perspective has its own unique set of rules and techniques for creating the illusion of depth and distance in a two-dimensional image. The position and number of vanishing points are important factors in creating a convincing and realistic perspective.