=============================================================================== ------------------------------ DRV-04.RDM ------------------------------------- =============================================================================== Viewset: DRV-04 DesignReview Viewset, Version 4.0 Intergraph Corporation Product Overview ---------------- DesignReview is a 3D computer model review package specifically tailored for plant design models consisting of piping, equipment, and structural elements like I-beams, HVAC ducting, and electrical raceways. It allows flexible viewing and manipulation of the model for helping the design team visually track progress, identify interferences, locate components, and facilitate project approvals by presenting clear presentations that technical and non-technical audiences can understand. On the construction site, DesignReview can display construction status and sequencing through vivid graphics that complement blueprints. After construction is complete, DesignReview continues as a valuable tool for planning retrofits and maintenance. DesignReview is a multi-threaded application that is available for both UNIX and Windows NT. Model Data ---------------- The model in this viewset is a subset of the 3D plant model made for the GYDA offshore oil production platform located in the North Sea on the south-west coast of Norway. A special thanks goes to British Petroleum who has given us permission to use the geometric data as sample data for this viewset. Use of this data is restricted to this viewset. Viewset Tests ---------------- DesignReview works from a memory-resident representation of the model that is composed of high-order objects such as pipes, elbows, valves, and I-beams. During a plant walk-through, each view is rendered by transforming these high-order objects to triangle strips or line strips. Tolerancing of each object is done dynamically and only triangles that are front facing are generated. This is apparent in the viewset model as it is rotated. Most DesignReview models are greater than 50 megabytes as stored as high-order objects. For this reason and the benefit of dynamic tolerancing and face culling, display lists are not used. There are 6 tests specified by the viewset that represent the most common operations performed by DesignReview. These tests are as follows: No. Weight DesignReview Operation -------------------------------------------------------------------- 1 45% Walk-through rendering of curved surfaces. Each curved object (i.e., pipe, elbow) is rendered as a triangle mesh, depth buffered, smooth shaded, 1 infinite light, with a different color per primitive. 2 30% Walk-through rendering of flat surfaces. This is treated as a different test than #1 because normals are sent per facet and a flat shade model is used. 3 8% For more realism, objects in the model can be textured. This test textures the curved model with linear blending and mipmaps. 4 5% Texturing applied to the flat model. 5 4% As an addition way to help visual identification and location of objects, the model may have "screen door" transparency applied. This requires the addition of polygon stippling to test #2 above. 6 4% To easily spot rendered objects within a complex model, the objects to be identified are rendered as solid and the rest of the view is rendered as wire frame (line strips). The line strips are depth buffered, flat shaded, and unlit. Colors are sent per primitive. 7 4% Two other views are present on the screen to help the user select a model orientation. These views display the position and orientation of the viewer. A wire frame, orthographic projection of the model is used. Depth buffering is not used, so multi- threading cannot be used so that draw order is preserved. ------------------------------------------------------------------------------------------------------------------------ Viewset: DRV-04 Viewset version: 4.0 1 45 TMESH, Z-Buf, 1 Light, cp PRIMITIVE, Thread, 2 30 TMESH, Z-Buf, 1 Light, Flat, Facet Normals, cp PRIMITIVE, Thread, 3 8 TMESH, Z-Buf, 1 Light, MODULATE Texturing, cp PRIMITIVE, Thread, 4 5 TMESH, Z-Buf, 1 Light, MODULATE Texturing, Flat, cp PRIMITIVE, Thread, 5 4 TMESH, Z-Buf, 1 Light, Flat, Facet Normals, cp PRIMITIVE, Thread, Poly Stipple, 6 4 LINE, Z-Buf, Flat, cp PRIMITIVE, Thread, 7 4 LINE, Flat, cp PRIMITIVE, Ortho Proj ------------------------------------------------------------------------------------------------------------------------ Viewset Files ------------- DRV-04.RDM This file. gyda0-wf.msh Wire frame mesh data used for VECTOR rendering. gyda1-ts.msh Triangle mesh data for curved surfaces. gyda2-ts.msh Triangle mesh data for flat surfaces. gyda0-wf.wlk Walkthrough data for gyda0-wf.msh gyda1-ts.wlk Walkthrough data for gyda1-ts.msh gyda2-ts.wlk Walkthrough data for gyda2-ts.msh gyda0-wf.jpg JPEG image of the wire frame model. gyda1-ts.jpg JPEG image of the curved triangle strip model. gyda2-ts.jpg JPEG image of the flat triangle strip model. flag.mtv Texture image. DRV-04.csh C-shell script to run the viewset tests. DRV-04.bat NT script to run the viewset tests. DRV-04.cmd OS/2 script to run the viewset tests. OPC.RDM File with OPC contacts.