Selecting and Positioning Nodes

The main functions of node's selection and positioning are available via the Positioning panel.

All available controls for selecting and positioning nodes can be found on the Nodes tab of the Controls window.

To select a single node in the scene, choose on the Positioning panel and click the left mouse button on this node. In this case, only the mesh surface which you have clicked will be selected. To select several mesh surfaces, holdShift and click required surfaces.

To select several nodes, do one of the following:

• Use the selection box: click and hold the left mouse button, drag the mouse to select the required nodes. In this case, all surfaces of each mesh (if it exists) will be selected.

  

  Select Using Selection Box
• Select one of the nodes, press and hold Shift and add all the required nodes and their surfaces to the selection.

  

  Add Nodes to Selection

When the node is selected, the following is shown:

• Wireframe of the node
• Bounding box of the node
• Bounding box of the selected surface (or surfaces)

To remove nodes from the selection (deselect), press and hold Ctrl and click the left mouse button on the required nodes.

To deselect all the selected nodes, press Ctrl+Shift+A.

The selected nodes can be positioned in the world by using one of the ways described below.

Inverse Selection

Isolated View

To transform nodes, choose the required transformation mode (manipulator) on the Positioning panel of theTool bar:

Move Nodes

Rotate Nodes

Scale Nodes

Clone and Delete Nodes

Transformations of the node are relative to the pivot point. The pivot point is used to control the way nodes rotate and scale.

To rotate or scale several nodes, select them, choose the required manipulator and specify the position of its pivot point by using the pivot point toggle.

• If the button is active, the pivot point will be set to the center of selection.
• If the button is active, the pivot point will be set to the center of the last selected node.

For example:

• If you select several nodes, set the pivot point toggle to Center and rotate these nodes, they will rotate around the center of selection as follows:

  

  Pivot Point in the Center of Selection
  Notice

  If you scale the nodes, they will be scaled out from or in toward the center of selection.
• If you set the pivot point toggle to Pivot and rotate the selected nodes, each node will rotate around its center as follows:

  

  Pivot Point coincides with the Last Selected Node Center
  Notice

  If you scale the nodes, each node will be scaled relative to its center.

The basis of the manipulator pivot point can be toggled as follows:

• If the button is active, world space orientation will be used for the manipulator pivot point.

  For example, if you set the combination for the selected nodes and rotate them around the Y axis, you will get the following:

  Before rotation:	After rotation:
  The pivot point is oriented by the world space.	The nodes have been rotated by 45 degrees around the Y axis.

• If the button is active, the coordinate system of the parent node will be used for the pivot point orientation.

  For example, if you set the combination the selected nodes and rotate them around the Y axis, you will get the following:

  Before rotation:	After rotation:
  The pivot point is oriented by the local basis of the parent node (the red cube).	The nodes have been rotated by 45 degrees around the Y axis.

• If the button is active, the pivot point will be oriented by the node local coordinate system. It means that its orientation will not depend on the parent node orientation.

  For example, if you set the combination for the selected nodes and rotate them around the Y axis, you will get the following:

  Before rotation:	After rotation:
  The pivot point is oriented by the local basis of the last selected node(the green cube).	The nodes have been rotated by 45 degrees around the Y axis.

Snapping a node by the grid enables to position a node along the axis or over the grid with a given step (in units).

To snap a node by grid:

1. Choose on the Positioning panel (or pressShift+W)
2. Specify the grid step via the following panel:

   

   Now you can move any node in the world by an axis or a grid with the given step.
3. Move one of the nodes:
   • If one axis is chosen (an arrow manipulator is dragged), the node will be aligned by an axis.
   • If a node is repositioned by two axes (a rectangle manipulator is dragged), the node will be aligned by a horizontal or vertical grid.

   Snapping By an Axis

   Snapping By a Grid Stripes

Snapping a node by an angle enables to rotate a node along the axis with a given step (in degrees).

To snap a node by angle:

1. Choose on the Positioning panel (or pressShift+E).
2. Specify the step for the rotation angle via the following panel:

   

   Now you can rotate any node in the world around the axis with the given step.
3. Rotate one of the nodes.

   

   Rotation By 45 Degrees

Snapping a node to a surface of another node provides pixel-perfect positioning of the nodes relative to each other.

To snap a node to the surface:

1. Select a node that should be snapped.
2. Choose on the Positioning panel (or pressAlt+W).
3. Specify snapping settings via the following panel:

   

   Option	Description
   Offset from surface	Specifies the distance from the node's pivot point to the surface (in units). Notice To increase/decrease the distance to the surface, use the WHEEL UP/WHEEL DOWN hot keys. To reset the distance to the surface, use the MIDDLE CLICK hot key.
   Orient by normal	Specifies whether the node should be oriented by the surface normal or not. Notice The hot key is RIGHT CLICK

4. Move the node until the red stripe intersects the required surface of the other node. Click the left mouse button to place the node.
   Notice

   To abort placement, press ESC.

   Node is Oriented by Normal

   Node is Not Oriented by Normal

Dropping a node to the ground means positioning the selected node to the surface below this node.

To drop a node to the surface:

1. Select a node (or several nodes) that should be dropped.
2. Put the cursor over on the Positioning panel.
3. Specify the required settings via the panel that appears:

   

   Option	Description
   Offset from surface	Specifies the distance from the node's pivot point to the surface (in units).
   Orient by normal	Specifies whether the node should be oriented by the surface normal or not.
   Intersection mask	Sets an intersection mask that defines whether a node (or nodes) will be positioned on a surface to which it is dropped. A node will be positioned on a surface if they both have matching intersection masks. Otherwise, the node will penetrate the surface.

4. Click to drop a node (nodes).

   Initial Position of a Node	Node Dropped to Surface (Default Settings)