Use Singular Value Decomposition In VTK

Affine transformation can be decomposed to translation, rotation, and scale. As we know, the transformation can be represented by matrix.     Related post: https://www.weiy.city/2021/11/the-releationship-between-local-transform-and-pose-transform/ It can be computed by translate matrix and rotate & scale matrix.     Example: I try to do decomposition for a matrix.     Read more…

3D – Rotate Axis System To The Special Orientation

The post is based on https://www.weiy.city/2021/11/vtk-rotate-vector-to-special-direction/. We will rotate the three axes of the world coordinate system to particular directions. #include <iostream> #include <vtkSmartPointer.h> #include <vtkTransform.h> #include <vtkActor.h> #include <vtkConeSource.h> #include <vtkRenderer.h> #include <vtkRenderWindow.h> #include <vtkPolyDataMapper.h> #include <vtkRenderWindowInteractor.h> #include <vtkAxesActor.h> #include “../point.hpp” using namespace std; double AngleBeteewnTwoVector( Point vec0, Point Read more…

VTK – Rotate Vector To Special Direction

I take notes about how to rotate vector to a special direction. #include “./tool.h” #define vtkSPtr vtkSmartPointer #define vtkSPtrNew(Var, Type) vtkSPtr<Type> Var = vtkSPtr<Type>::New(); int main(int, char *[]) { PointStruct vec0( 1, 1, 0 ); PointStruct vec1( -1, 1, 0 ); PointStruct vecZ( 0, 0, 1 ); double radian = Read more…

3D Model Editor
: add a web app 3D Model Editor, it's under development.

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