Going beyond the plane (2D graphics) is more of a challenge than just adding another axis. Many methods are used together to match high expectations of the mind with 2D displays. For rendering 3D scenes, methods such as drawing, shading, textures, lighting, reflections, hidden surface removal, perspective projections are used.
shaping is the first step in 3D technology. A three-dimensional shape can be constructed using basic geometry (polygon, simple triangle), mathematical modeling (equations), or graphical methods such as lofting, lathing and extrusion, where a 2D object moves along a well-defined path in 3D space. Also used deformation technique, mesh strain. The result is usually a model with a wire.
shading then used to provide skin with a model of wires. Flat shading the model is the roughest method that does not smooth out. Guro Shadow , technology smooth shading, creates color gradients based on the location of the object object relative to the light source. But the technique is not enough, sharp glare and shadow casting. This problem is solved with the use of another technique with smooth shading, called Phong shading which is based on how we perceive colors. It uses the surrounding, diffuse and specular optical properties of the material of which the 3D object is composed.
Texturing is the next step to achieve the realism of a 3D object. While ray-traced rendering uses the optical properties of a material, ray-tracing uses a mapping, i.e. Overlaying bitmap images on the surface of an object to create a realistic texture. Texture, terrain, and reflection map maps are the fundamental types of cards.
Removing hidden surface algorithms like Z-Buffer Algorithm and Perspective Projections used to create a real effect of relative positioning of objects in the 3D world.
3D visualization This is a great three-dimensional graphics, because the first provides interactivity. The user can move around the virtual world by changing the perspectives of the scene or objects of the maneuver, using such operations as translation, rotation and scaling.
3D animation This is another noise, which is basically a sequence of frames created at a speed greater than the perception of vision (20 frames per second).
The 3D world, defined as vertices, after various transformations, is rasterized and displayed. This process constitutes a graphics pipeline. The graphics pipeline has the following steps:
- World Transformation
- View Transformation
- Projection transformation
- Crop and zoom viewport
