6 modules - PI-VR GmbH

5.2 Edit» Preconditions for merging objects: The objects are unshared (not referenced!),they have the same materials and lie in the same group.To merge objects, select the parent groups.» Split Geometry Splits the selected object into several meshes. A dialogue boxopens. Set the maximum number of triangles each resulting mesh may have.» Split Geometry into Primitives Splits the selected object into triangles. Thisfunction is much faster than the split geometry function. CRTL + SHIFT + T.» Unsplit Geometries with One Triangle Merges all triangles which are childrenof the selected node. This function is much faster than the merge geometryfunction. CRTL + SHIFT + T.» Subdivide Geometry Subdivides the selected geometry into more triangles resultingin a finer mesh. A dialogue box opens.» Subdivision Mode: You have the following choices:• Standard: Each polygon is subdivided until the edge lengths fall below themaximum edge length threshold.• Phong Interpolation: Each edge of a polygon is subdivided right in its centerand the position of the new vertices is calculated by means of phonginterpolation. The results are smoother surfaces which also redefine thesilhouettes. Caution: In some cases, hard edges result in gaps in the geometry.» Iterations: This attribute describes the number of iteration used for phong interpolation.The value ’1’ generates 4 triangles per triangle, ’2’ generates 16 trianglesper triangle, ’3’ generates 64 triangles per triangle and ’4’ generates 256 trianglesper triangle.» Max edge length: This value describes the maximum edge length threshold, belowwhich an edge is no longer subdivided.» Group by Material Groups the objects of the Scenegraph by assigned materials.Caution: The whole Scenegraph structure will be rearranged.83