projectiveplane(6x) | XScreenSaver manual | projectiveplane(6x) |

**-window**- Draw on a newly-created window. This is the default.

**-root**- Draw on the root window.

**-install**- Install a private colormap for the window.

**-visual***visual*- Specify which visual to use. Legal values are the name of a visual class, or the id number (decimal or hex) of a specific visual.

**-delay***microseconds*- How much of a delay should be introduced between steps of the animation. Default 10000, or 1/100th second.

**-fps**- Display the current frame rate, CPU load, and polygon count.

**-mode random**- Display the projective plane in a random display mode (default).

**-mode wireframe***(Shortcut:***-wireframe***)*- Display the projective plane as a wireframe mesh.

**-mode surface***(Shortcut:***-surface***)*- Display the projective plane as a solid surface.

**-mode transparent***(Shortcut:***-transparent***)*- Display the projective plane as a transparent surface.

**-appearance random**- Display the projective plane with a random appearance (default).

**-appearance solid***(Shortcut:***-solid***)*- Display the projective plane as a solid object.

**-appearance distance-bands***(Shortcut:***-distance-bands***)*- Display the projective plane as see-through bands that lie at increasing distances from the origin.

**-appearance direction-bands***(Shortcut:***-direction-bands***)*- Display the projective plane as see-through bands that lie at increasing angles with respect to the origin.

**-colors random**- Display the projective plane with a random color scheme (default).

**-colors twosided***(Shortcut:***-twosided-colors***)*- Display the projective plane with two colors: red on one "side" and green on the "other side." Note that the line at infinity lies at the points where the red and green "sides" of the projective plane meet, i.e., where the orientation of the projective plane reverses.

**-colors distance***(Shortcut:***-distance-colors***)*- Display the projective plane with fully saturated colors that depend on the distance of the points on the projective plane to the origin. The origin is displayed in red, the line at infinity is displayed in magenta. If the projective plane is displayed as distance bands, each band will be displayed with a different color.

**-colors direction***(Shortcut:***-direction-colors***)*- Display the projective plane with fully saturated colors that depend on the angle of the points on the projective plane with respect to the origin. Angles in opposite directions to the origin (e.g., 15 and 205 degrees) are displayed in the same color since they are projectively equivalent. If the projective plane is displayed as direction bands, each band will be displayed with a different color.

**-colors depth***(Shortcut:***-depth***)*- Display the projective plane with colors chosen depending on the 4d "depth" (i.e., the w coordinate) of the points on the projective plane at its default orientation in 4d.

**-view-mode random**- View the projective plane in a random view mode (default).

**-view-mode turn***(Shortcut:***-turn***)*- View the projective plane while it turns in 4d.

**-view-mode walk***(Shortcut:***-walk***)*- View the projective plane as if walking on its surface.

**-view-mode walk-turn***(Shortcut:***-walk-turn***)*- View the projective plane as if walking on its surface. Additionally, the projective plane turns around the true 4d planes (the xy, xz, and yz planes).

**-orientation-marks**- Display orientation marks on the projective plane.

**-no-orientation-marks**- Don't display orientation marks on the projective plane (default).

**-projection-3d random**- Project the projective plane from 3d to 2d using a random projection mode (default).

**-projection-3d perspective***(Shortcut:***-perspective-3d***)*- Project the projective plane from 3d to 2d using a perspective projection.

**-projection-3d orthographic***(Shortcut:***-orthographic-3d***)*- Project the projective plane from 3d to 2d using an orthographic projection.

**-projection-4d random**- Project the projective plane from 4d to 3d using a random projection mode (default).

**-projection-4d perspective***(Shortcut:***-perspective-4d***)*- Project the projective plane from 4d to 3d using a perspective projection.

**-projection-4d orthographic***(Shortcut:***-orthographic-4d***)*- Project the projective plane from 4d to 3d using an orthographic projection.

**-speed-wx***float*- Rotation speed around the wx plane (default: 1.1).

**-speed-wy***float*- Rotation speed around the wy plane (default: 1.3).

**-speed-wz***float*- Rotation speed around the wz plane (default: 1.5).

**-speed-xy***float*- Rotation speed around the xy plane (default: 1.7).

**-speed-xz***float*- Rotation speed around the xz plane (default: 1.9).

**-speed-yz***float*- Rotation speed around the yz plane (default: 2.1).

**-walk-direction***float*- The walking direction is measured as an angle in degrees in the 2d square that forms the coordinate system of the surface of the projective plane (default: 83.0). A value of 0 or 180 means that the walk is along a circle at a randomly chosen distance from the origin (parallel to a distance band). A value of 90 or 270 means that the walk is directly from the origin to the line at infinity and back (analogous to a direction band). Any other value results in a curved path from the origin to the line at infinity and back.

**-walk-speed***float*- The walking speed is measured in percent of some sensible maximum speed (default: 20.0).

**DISPLAY**- to get the default host and display number.

**XENVIRONMENT**- to get the name of a resource file that overrides the global resources stored in the RESOURCE_MANAGER property.

5.36 (10-Oct-2016) | X Version 11 |