Walkaround configuration

In the Walk Around dialog, the Config button contains the following commands. Click the menu command in the picture below to read more about each command.

• Walkaround configuration
• Walkaround settings
• Visualization accuracy
• Direction of light
• OpenGL Visual Attributes
• Visualizer/OpenGL configuration
• Show OpenGL driver info
• Surface shading styles
• Re-load surface shading setup

Walkaround settings

Opens the Config Walk Around dialog. See Walkaround settings for details.

Visualization accuracy

Opens a dialog for defining the smooth surface approximation accuracy. Default values are recommended.

• Max distance between arc and line segment

• Max number of line segments in any circle

Direction of light

You can define the direction of light by pointing to the light source.

OpenGL Visual Attributes

If the CADMATIC window manager supports OpenGL, then CADMATIC OpenGL Visualizer is used to render scenes during Walkaround. Otherwise CADMATIC own shader is used.

Walkaround has a tool for defining attributes that in turn is used to select a matching OpenGL visual.

Material properties (PMS_LIBDIR/site/SurfaceShading.cnf) are reloaded when Walkaround starts. Also the reload command is available in the Config menu.

The standard CADMATIC Walkaround color map is documented in an HTML file in the directory: PMS_HOME\pm\setup\doc.

Visualizer/OpenGL configuration

Storing OpenGL commands into display lists speeds up rendering. Visualizer scenes contain four different classes of objects that can use display lists to store the necessary OpenGL commands:

• Material properties. This specifies the color of objects using that material.

• Object templates. These store a shape that can be instantiated using different orientations and locations. Plant Modeller component models are stored as templates.

• Instantiated objects. These transform an object template to produce a 3D object. Equipments, structural components and standard parts (valves, T-pieces...) are represented as instantiated objects.

• Inline objects. These are unique 3D object in a scene. These model pipes, beams and ducting parts.

If your computer has enough memory then display lists usage for all four classes should be enabled. In case your computer does not seem to have enough memory to store all display lists then try keeping display lists in this order: material properties, templates, instantiated objects and inline objects.

On demand creation of display lists

This setting controls if display lists are created when an object hits the camera view box for the first time. Not when the scene is built. This setting should dramatically speed up start-up of Walkaround and also reduce memory usage in large scenes. Typically it may be that only a fraction of objects in the scene will be "seen" during a browsing session. So creating display lists for these would be utterly useless.

Default Transparency

This setting is not actually shown in Walkaround at all. This setting lets you to define how transparent the object is when you use the command "Make transparent" during 3D digitizing.

Show OpenGL driver info

Shows information about your computer's OpenGL driver.

Surface shading styles

Walkaround uses a style-based system to determine the colors for the objects. There is a tool that allows you to manage these style sets, as described in Surface shading style.

Re-load surface shading setup

This command reloads the surface shading setup from COS. You can use this to load the settings again if someone else has changed the setup in COS.