Algorithm
Find Closest Plane Between Points In 3D By Levmar Algorithm
how to find the closest plane closest to a few random points in the 3D environment. We know that the sum of square distances from point to plane can be calculated.
CGAL
Find Closest Line Between Points In 2D By Least Squares
Let’s create a few random points and use algorithm library CGAL and the visualization toolkit (VTK) to find and draw the closest line by a demo.
VTK
Simple Way To Fill The Hole On 3D Model
I want to fill the clipped model in a simple way.
For every single list, sort the points on the list and connect the last point and the first one if it’s opened. Take the first point on the list and find its two neighboring points, construct a triangle by them.
VTK
VTK : Cut Volume By Plane
cut a volume by a plane and display the cut section. The left renderer contains the original volume object, and the right renderer shows the cross section in the window.
VTK
VTK – Set Clipping Range For Camera
I create two renderers that show the same 3D model. Make the camera in the right renderer linkage with the left one’s, that means we can get the same view in the right renderer when we modify the status of the camera of the left renderer.
Here is all information of implementations.
CGAL
Surface Reconstruction By VTK And CGAL
Use vtkSurfaceReconstructionFilter to get mesh from the point coordinates.
I use the advancing front surface reconstruction way to get the mesh from point cloud information.
VTK
Scale vtkTextActor When We Zoom In/Out
I will show how to scale the string to follow the 3D model cone in the renderer by the following example.
Create class customIteractorStyle which inherited vtkInteractorStyleTrackballCamera
VTK
Convert Length Between Coordinate System, Rotate Vector, And Mark Position
The article shows a few tips in VTK development. There are simple tasks for most developers but the functions can be used in many situations. Convert the length value in the display coordinate system to the new value in the world coordinate system. double DisplayLenToWorldLen(const double &length) { Point p0( Read more…
VTK
VTK: Draw Rectangle And Area Pick
Let’s add three items to the render window. Draw a rectangle and pick all actors in the rectangle. The class vtkAreaPicker can help us to find these picked actors. I will show how to do it in the following code snippet. main.cpp CustomIteractorStyle.h CustomIteractorStyle.cpp But how to find the actors Read more…