Rendering Approximation Panel Quick Help
|Quick Help Home|
|Mesh Generation Options|
|This dialog controls how the
mesh is created for the rendering process. The default is now to
utilize the Viewport Mesh which already exists if you are using the "Smooth
& Highlights" or one of the other shaded display techniques. This is
the fastest option because the mesh already exists but it may not produce
the best quality results. To get the highest quality rendering with an
optimal number of polygons, you should utilize the "View Dependent Approx"
mesh generation with "Production" settings.
NOTE: To change the Rendering Approximation settings of many NURBS Brep Objects at one time, select them and use the "Pwr_NURBS" command.
View Dependent Approx:
Mesh quality will adjust depending on how large the object is in the view.
A sphere which covers 10 pixels on the screen will get a lot fewer polygons
than a sphere which covers 100 pixels. The view will maintain the same display accuracy.
The "Face Chord", "Edge Chord" and "Max Edge" will be defined in terms of
the number of pixels. For example if you wanted the maximum deviation
from the precise surface to be 1/2 of a pixel you would set the Face Chord
to 0.5 with the "View Dependent Approx" set. This
option could also be called intelligent mesh generation because it will
regenerate the mesh to maintain a consistent display quality.
The Rendering Parameters describe constraints to be used during the process of creating a mesh from the precise smoothed surfaces.
Face Approx Angle:
Defines the maximum angle for a polygon face. Faces with an angle
greater than this value will be sub-divided into multiple polygons.
Decreasing this value will increase the quality of the image. A face
approximation angle of 10 degrees will produce at least 18 divisions from
the top to the bottom of a sphere and at least 36 division around the
equator for a total of at least 1296 triangles.
|Mesh Quality Presets|
To make your life easier, we have defined 3 settings that automatically change the Rendering Parameters. The default "Production" should give you an extremely high quality image without polygonal artifacts most of the time. Occasionally you may have to do further adjustments.
quality mesh generation setting. This option will generate the
Weld and Smooth:
Smooths out the mesh, removing small edges and polygons. Use this
option when you convert to editable mesh or poly.