Download
1 / 12
120 likes | 143 Views
Dive into the world of rendering & texture mapping with this comprehensive guide. Learn about rendering techniques, texture mapping principles, UV space mapping, bump mapping, and lighting to enhance the realism of your digital creations. Rendering involves producing finished images, while texture mapping allows for the application of color patterns and textures to surfaces. Discover how opacity maps control material transparency and realize the importance of textures in achieving realistic object appearances. Explore UV mapping to tackle distortion challenges with image maps on complex surfaces, and understand the intricacies of bump mapping to simulate surface roughness. Lighting plays a crucial role in creating realistic visuals and can be customized for a lifelike effect. Whether you are a beginner or an experienced 3D artist, this guide will elevate your skills in rendering and shading techniques.
E N D
Basic Rendering Techniques Guilford County SciVis V106.03
Rendering and Shading Techniques • Rendering produces a finished image. • The closer the rendering is to create a natural scene, the more complex it is, and the longer it takes to render the scene. • Rendering the scene to a file may include such things as the background, output size, compression, file type, and output path. • Rendering previews are small and quick to check your scene prior to doing a full render.
Texture Mapping • Surfaces may have single colors or they may have multiple color patterns, which are commonly referred to as textures. • For example: wood has a characteristic appearance because of its varying color patterns. • Even materials like metals which seen to be one color, when closely examined, reveal varying shades and colors mixed in random patterns.
Texture Mapping • The term texture in 3D computer graphics refers to image patterns rather than the “feel” of materials. • The most basic type of texture is a 2D picture (often saved as a .jpeg, .bmp, or .tga file), which is applied to an object.
Texture Mapping • Opacity maps control whether a material is opaque, transparent, or translucent. • Adding textures to the object is an extremely important part of making objects look realistic.
Texture Mapping • Textures may be acquired in different ways. • Most 3D programs come with libraries where you can select various materials and patterns.
UV Space • UV mapping is a way of trying to solve the distortion problems that occur when applying image maps (textures) to complex surfaces. • Many 3D graphic programs allow texture image scaling and placement controls.
UV Space • U represents the horizontal component of an image. It corresponds to the X axis dimension in 2D coordinate space. • V represents the vertical component of an image. It corresponds to the Y axis dimension in 2D coordinate space. • W represents the z axis or depth in 3D coordinate space.
UV Space • Tilingallows pattern to be repeated, much like tiles on a floor.
Bump Mapping • Bump maps simulate the roughness of surfaces even though the surfaces are perfectly flat. • Bump maps make an object appear to have a bumpy or irregular surface. This is possible because of higher areas are light and lower areas are dark.
Lighting • 3D programs have some type of default lighting, which can be changed to create a more realistic appearance.
