Selection of Triangles in 3D

When you want to select some triangles in your reconstructed model, just select a tool in the Mesh Model part of the SCENE 3D/TOOLS tab. These selections apply with all reconstruction tools, e.g. the filtration, simplification, orthographic projection, and smoothing.
You can choose from the following selection tools:

• Rect: Left-click, hold and move the mouse to select triangles with a rectangle.
• Lasso: Left-click, hold and move the mouse in a circular way.
• Box: Left-click and move the mouse to define the box base, left-click and move the cursor again to define the box height. You can now select/deselect triangles inside/outside the box, when clicking the respective button in the Box Selection Tool in the 1Ds panel.
• Expand: This function expands the current selection to all transitively connected triangles. To be able to click the button, you need to create a selection of triangles with another selection tool.
• Advanced: The Advanced Selection Tools enable you to:
  • Select marginal triangles: Marginal triangles are triangles added by the reconstruction algorithm, and ensure its watertightness.
  • Select largest connected component
  • Select large/small triangles: Selects all triangles with at least one edge longer/shorter than threshold, which is calculated as the average edge length multiplied by a user-defined value in the Edge threshold multiplier field.
• Select All: This function selects all triangles in the current 3D scene.
• Deselect clears any present selection of triangles.
• Invert changes your current selection to the rest of the model triangles.