Volume

Figure D-18: Visualization Browser with Volume Properties Displayed

These properties control volume object visualizations. For each property, the type of control and the values that can be assigned are listed, along with the property identifier and allowed values for use by the iTools Procedural Interface. For a description of how a particular control is used, refer to Property Controls.

Table D-48: Volume Properties
Interface: Property Name	Control Type: Values	API: Property Identifier	API: Allowed Values
Display Scale	Set the display scale for the selected volume. Select Display Scale Bottom/Top → Edit	None	None
Color & Opacity Table 0	Color: By selecting Edit Color → Table Edit access the color table to manipulate plot color values Note - To edit the opacity only in the editor, uncheck the R, G, and B boxes in both the Modify and Display rows. Edit the remaining line by clicking on and dragging the line in the window. Click OK when finished.	None	None
Color & Opacity Table 1	Color: By selecting Edit Color → Table Edit access the color table to manipulate plot color values.	None	None
Subvolume	String: Edit SubVolume Extents.	None	None
Auto render	Boolean: Automatically render the volume each time the window is redrawn? Choose True or False. Default = False	AUTO_RENDER	0 (Do not auto-render) 1 (Auto-render)
Quality	String List: Quality of the volume. Choose between these values: Low (texture maps) High (volume) Default = Low	_RENDER_QUALITY	0 (Low--default) 1 (High)
Boundary	String List: Boundary around the volume. Choose between these values: Off Wire frame Solid walls Default = Solid walls	RENDER_EXTENTS	0 (Off) 1 (Wire frame) 2 (Solid walls--default)
Boundary transparency	Number: Percent transparency of the boundary around the volume (wire frame or solid walls). Move slider to change value. Default = `90`	EXTENTS_TRANSPARENCY	Integer from 0 to 100.
Render step X	Number: Stepping factor through the voxel matrix in the x direction. Default = `1`	X_RENDER_STEP	Floating point
Render step Y	Number: Stepping factor through the voxel matrix in the y direction. Default = `1`	Y_RENDER_STEP	Floating point
Render step Z	Number: Stepping factor through the voxel matrix in the z direction. Default = `1`	Z_RENDER_STEP	Floating point
Extents color	Color: Color for the volume. Click to choose from the default color palette, or specify RGB values. Default = `[0,0,0]` (black)	COLOR	3D integer array of the form: [R, G, B] Each color value may range from 0 to 255.
Ambient color	Color: Choose from default color palette or specify RGB values. Default = `[255, 255, 255]` (white)	AMBIENT	3D integer array of the form: [R, G, B] Each color value may range from 0 to 255.
Composite function	String: Choose composite function. Default = Alpha Blending	COMPOSITE_FUNCTION	0 (Alpha--default) 1 (MIP--Maximum intensity projection) 2 (Alpha sum) 3 (Average)
Acceleration hints	Boolean: Use acceleration hints? Choose Enable or Disable. Default = Disable	HINTS	0 (Disable acceleration hints) 1 (Enable acceleration hints)
Interpolation	String List: Set interpolation type. Choose between these values: Nearest neighbor Trilinear Default = Nearest neighbor	INTERPOLATE	0 (Nearest neighbor--default) 1 (Trilinear)
Use lighting	Boolean: Use lighting? Choose True or False. Default = False	LIGHTING_MODEL	0 (Do not use lighting) 1 (Use lighting)
Voxel gradient	String List: Set voxel gradient type. Choose between these values: One-sided Two-sided Default = One-sided	TWO_SIDED	0 (One-sided--default) 1 (Two-sided)
Update Z Buffer	Boolean: Update Z Buffer? Choose True or False. Default = True	ZBUFFER	0 (Do not update Z buffer) 1 (Update Z buffer)
Skip zero opacity	Boolean: Skip zero opacity? Choose True or False. Default = True	ZERO_OPACITY_SKIP	0 (Do not skip zero opacity) 1 (Skip zero opacity)