Rhinoceros

Heightfield

Creates a NURBS surface based on grayscale values of the colors in an image file.

Steps:

1. Select a bitmap file.

2. Pick

   the first corner.

3. The base of the surface will be parallel to the current construction plane.

4. Pick the second corner or type a length.

5. The shape of the pick rectangle will match the aspect ratio of the bitmap file.

6. Specify options.

Options

Number of sample points

The bitmap’s “height” is sampled at the specified number of control points along the u- and v-directions
of the bitmap.

Height

Sets the scale of the height of the surface.

Control points at sample locations

Creates a surface control point
at each of the sample locations.

Interpolate surface through samples

Constrains the surface to pass through each sample location’s height.

-Heightfield

MeshHeightfield

Creates a mesh based on hue, saturation, value and RGB numbers of the colors in an image file.

Steps:

1. Select a bitmap file.

2. Pick

   the first corner of a rectangle.

3. Pick the second corner or type a length.

4. Specify the grid size and elevation for the colors in the bitmap.

5. For ideas about what to do with your mesh, see the ApplyMeshUVN
   command.

Options

GridSize

Width

The number of mesh faces in the x-direction.

Height

The number of mesh faces in the y-direction.

Elevation

HueFactor/SaturationFactor/ValueFactor

The scale factor for scaling the color’s hue, saturation, and value attributes.

RedFactor/GreenFactor/BlueFactor

The scale factor for scaling the color’s RGB attributes.

From bitmap colors