![]() It is real in that sense that it resembles the first three dimensions. With three dimensions the space is shown by coordinates, while the four dimensions of the time (t) are not displayed in that coordinate system with some angle (dimensional) that is constant or real. ![]() This will probably involve either runtime mesh modification, or translation, rotation, and scaling of a cube-shaped mesh. Four-dimensional space is space-time concept. Hopefully whatever code you have already can help you with calculating where the vertices should be! Expert Answer 1.What is the core differences between 3D and 4D printing A 4D and 3D objects are just printed the same way. Essentially, a 3D object that moves is considered to be four dimensional. This will probably involve either runtime mesh modification, or translation, rotation, and scaling of a cube-shaped mesh. 4D adds the factor of time and motion to 3D. Basically what you need to calculate is the 3-dimensional projection of the shape is in a 3D world. Now what about a 4d "box" shape? That projection would probably look like a box sometimes? but that's probably where your piece of code comes into play. However, such pictures give only the illusion of depth, as the canvas or screen always remains flat. In fact, everything in our reality is three-dimensional. It is best to think of it with an example. 2D represents an object in just two dimensions, while 3D represents it in three dimensions. I think that's about all that can happen for a sphere, since rotating it does nothing. Painters use the technique of perspective, drawing distant objects smaller and depicting angles as visible through ones point of view, while 3-D movies use two images superimposed on the same screen. They are named for the number of dimensions that they portray. When you move it on the "w" axis the scale of the sphere may change and it may even disappear. Based on my intuition, and what happened for 3d -> 2d I'd guess a 4d sphere projected in a 3d world would look like. Now let's think about 4d objects in a 3d world. I think that projection would always be a quadrilateral, but thee shape can be strange and can change a lot as you move it on the z axis, or worse, rotate it on some arbitrary axis. Now imagine you rotate the cube on a weird angle and project it into 2d again. do absolutely nothing in the 2d world until you reach of edge of the square, at which point it will disappear. If you move it around on z, the square will. ![]() If you move it around on x or y, the square will move. On a 2d plane it will just look like a square. But if you move the sphere on the z axis, the 2d circle will appear to grow or shrink or even completely disappear, depending on which part of the axis is currently intersecting the plane. 3d presentation is a real-life factual concept. ![]() but if you imagine a 3d sphere projected in a 2d plane, it just looks like a circle, right? Then if you move that sphere on the x or y axis, the circle can just move around on the 2d plane as normal. ![]()
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