We can generate different 3D models of string in the page Create 3D Text. All fonts are free for individuals and business use. They come from the website https://ziyouziti.com. You can visit it if you are interested in these fonts. I will display the general effect of these fonts in Read more…
I planed to show the 3D model’s bounds in the display coordinate and update it if the user rotates and zooms in/out in real-time. I’m curious about if the display bounds touch with the 3D model. The display bounds are shown as a red rectangle in the render window, our Read more…
We often use vtkPropPicker to judge which 2D actor had been picked, but the solution doesn’t work in the Mac software Parallels. So we have to create a new method to found the 2D actor which had been picked. There are two situations in my problem. The actor2D takes vtkImageMapper Read more…
We have a vtkTextActor object in the render window now. How to put it at the right-top corner or the left-bottom corner in the render window according to the render and text rectangle’s size? The following code snippet shows the different scenes described above. #include <iostream> #include <vtkSmartPointer.h> #include <vtkSphereSource.h> Read more…
The story happened after the Zhou Dynasty end in ancient China. The Qin Dynasty became a powerful empire from a small state after the Reforms of Shang Yang. The new rules rewarded farmers and soldiers if they meet the government policies, punishment the people who broken the law even if Read more…
There is a massive module in my project, it computes many data tasks, update UI, and is responsible for interaction style. I want to move the user interaction part to another viewer class, make the old module more lightweight. The structure of the module class looks like the following snippet. Read more…
This is a story about Lv Buwei, prime minister of the Chinese Qin dynasty. Why did he decide to become a government official from a businessman? In 285 BCE, the five states Yan, Qin, Han, Zhao, and Wei formed an alliance and declared a war on the state Qi because Read more…
We will got the following left part’s effect when zoom in and zoom out in VTK render window. How to keep the same display size for the 3D model cube when zoom in or zoom out? VTK changes camera’s status in the interfaces vtkInteractorStyleTrackballCamera::OnMouseWheelForward and vtkInteractorStyleTrackballCamera::OnMouseWheelBackward, the action Dolly moves Read more…
The article shows how to make the original image has a retro style. Two steps need to be done. Change the red color channel of the original image. Change the brightness by a filled circle. The mathematical function used in step1 makes the brighter pixel brighter, darker pixel darker. Read more…