I also think that more depth into the maths would be nice for people who want to learn about quaternion math. I think this will point you in the right direction, maybe the author would like to add this to the project? Both interpolate along the shortest arc between quaternions.
Most common is spherical lerp, less common is normalized lerp. This is another bonus of using quaternions, lerp is fairly easy to do. Quaternions are often used in 3D engines to rotate points in space quickly.Īnimation involves interpolation, normally linear interpolation or LERP. Quaternions have 4 dimensions (each quaternion consists of 4 scalar numbers), one real dimension w and 3 imaginary dimensions x i + y j + z k that can describe an axis of rotation and an angle. They provide a convenient mathematical notation for representing orientations and rotations of objects in three dimensions. In mathematics, quaternions are a non-commutative number system that extend the complex numbers. Just a reminder: because rotation sequence is incommutable, it's possible that the cube is not in its initial state when all the rotated degrees are returned to zeros. You can also reset this program by button Reset. You can have pictures on each of the cube surfaces by clicking button Load Image.
When you run this program, a colored cube is loaded, and its center is shown with the camera's position in pixels. To illustrate how this libray works, I wrote this program. This library uses the right handed rectangular coordinate system and has the same X, Y coordinates as GDI+: About the Program The 3D Library includes: Point3d.cs, Vector3d.cs, Shape3d.cs, Cuboid3d.cs, Quaternion.cs and Camera.cs. You can also report a bug, which will provide a lot of addidtional, potentially useful information.The 3D Library, written using C# and GDI+, allows you to draw pictures in a 3-dimensional space and rotate or/and move 3D objects. Please help us by debugging the issues and contacting us with the information. Only a gray rectangle is shown by the 3D ViewerĪs with 3D Viewer crashes, there are quite a large number of possible reasons. You can also report a bug, which will provide a lot of additional, potentially useful information. Unfortunately, there are quite a large number of possible reasons.
If you would like to help make ImageJ nicer by detecting faulty driver versions, please contact us. Usually, this is fixed by installing new drivers.
There is a known problem with older Windows drivers for some Intel graphics cards. Unfortunately, there is not workaround/fix for this situation yet, except to use ImageJ locally when you want to use the 3D Viewer. when you run ImageJ via a remote X11 connection (3D acceleration works only when the graphics are displayed on the same machine as the program runs). The reason is most likely that your graphics setup does not have any hardware 3D acceleration. NullPointerException : Canvas3D: null GraphicsConfiguration