Height Points — Manual Vertex-Level Top Surface Control

Select an extruded shape in the 3D view. The shape must already be extruded — if it is still a flat 2D shape, press X first.

Activate the Height Points preset by either:

• Pressing 8 on the keyboard (while the shape is selected)
• Opening the Surface Preset flyout in the left toolbar and clicking Height Points

The top face of the shape immediately shows handles at every corner and edge midpoint. Each handle displays its current height as a numeric label. All handles start at the same height (the shape's current extrusion height).

Click and drag any height handle to change the elevation of that vertex:

• Drag upward to increase the vertex's height above the shape's base
• Drag downward to decrease it (down to zero — handles cannot go below the base)
• Hold Shift while dragging for fine incremental control — useful when aligning a slope to an exact gradient

As you drag, the top surface mesh updates in real time, showing the interpolated surface between all handles. The numeric label on the handle updates continuously to show the current height.

You can drag multiple handles in sequence — each drag is a separate undo step.

For precise control, use the Inspector sidebar rather than dragging:

1. With a Height Points shape selected, look in the Inspector for the Height Points section 2. Each handle is listed with its position label (e.g., Corner NW, Midpoint N, Corner NE) and a numeric input field 3. Click a field and type the exact height value you need — the handle immediately moves to that position 4. Tab to the next field to adjust the next handle without reaching for the mouse

The Inspector height values use the project's active unit system (metric or imperial). If the project is set to imperial, values are shown in feet and inches.

If you want to return the shape's top surface to a flat, uniform height after adjusting individual handles:

1. With the shape selected in Height Points mode, scroll down to the Height Points section in the Inspector 2. Click the Reset button

All handles are set back to the shape's current extrusion height (the Height field value in the Inspector). The top face becomes flat again.

This is useful if you want to start over with a different configuration, or if you want to switch to a different surface preset — reset first to ensure the transition is clean.

With a point selected, the Inspector shows a Falloff pill selector with three options. Smooth produces a gentle cosine-curved blend from the point's peak height down to zero at the edge of its influence radius — best for organic mounds and raised beds. Linear decreases height in a straight ramp from center to edge — useful for cleanly sloped surfaces. Stepped holds the full height across the radius and then drops sharply — useful for flat-topped platforms with defined edges. Change the falloff by clicking the appropriate pill; the surface updates immediately.

The Interpolation control in the Inspector (or via the Interpolation button in the HUD) applies globally to how all points on the shape are blended together. Smooth uses thin-plate spline interpolation for a fluid, organic surface across all points. Linear blends between points with straight ramps. Stepped produces flat plateaus at each point's height, with sharp transitions between them. Choose the mode that matches your design intent before fine-tuning individual point heights.

To delete a point, select it and press Delete or Backspace, or click the delete icon in the Inspector. You cannot delete the last remaining point. When your surface looks correct, click Done in the HUD toolbar — this exits Volume Points editing mode and returns the shape to normal selection. All your height changes are saved and can be undone with Ctrl+Z (or Cmd+Z on Mac) at any point during the session.