The affine transform in the 3D world can be represented by a 4×4 matrix. If there is no scale in the affine transform, the vector is translate vector and A is the rotate matrix. The original point’s position is representing by M, the changed point’s position is M’. Read more…
Calculate Rotate Angle And Asix Between Two Vectors, Calculate Model’s Size In Local Coordinate System, Boolean Operation For Mesh, Found Intersection Circle Of Two Models.
the action scale works in the three directions axis X, axis Y and asix Z. So the scaling transform I want to create needs to rotate by 45 degrees around asix Z, then apply scale(2, 1, 1). But the new transform will rotate cube surely. How to scale the cube without rotating or translating it?
I found a strange result about transform computation in my project. I create a new transform B by A, then use A to deep copy B and print it. There is a different matrix if I use shallow copy for A.Turn on the Warning Display setting for vtkTransform object. I Read more…
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.
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.
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.
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.
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.