Hi All, I have a VERY simple 3D space defined in WPF, which defines a 3D rectangle, I was hoping to be able to manipulate each one of the Point3D objects (in the "Positions") property on the MeshGeometry3D, but Im having trouble with it... Here is my XAML: <Grid> <Viewport3D Name="ViewPort" Focusable="true" ...
I'm just learning about Flex and I'm loving it. Unfortunatly I still have to make the decision on which RIA technology to use and its dependent on, among other things, from the following case: How can we wrap a java applet around a Flex application? More specifically, I would like to wrap/integrate NASA's World Wind applet in a Flex pan...
I've got this weird thing happening (maybe weird) when I use the 3d stuff in cs4. Basically, I have a stage that is 1100.wide and 500.tall. I have a custom class called Cube.as that if I import and place in the middle of the stage i.e.; var cube:Cube = new Cube(); addChild(cube); cube.x = 550; cube.y = 250; All the sides, when cli...
Hi, A-B-C-D are 4 points. We define r = length(B-C), angle, ang1 = (A-B-C) and angle ang2 = (B-C-D) and the torsion angle tors1 = (A-B-C-D). What I really need to do is to find the coordinates of C and D provided that I have the new values of r, ang1, ang2 and tors1. The thing is that the points A and B are rigidly connected to each ot...
Let's say I have two points in 3D space (a and b) and a fixed axis/unit vector called n. I want to create a rotation matrix that minimizes the euclidan distance between point a (unrotated) and the rotated point b. E.g: Q := matrix_from_axis_and_angle (n, alpha); find the unknown alpha that minimizes sqrt(|a - b*Q|) Btw - If a s...
Found some for 2D but not for 3D. Any ideas? ...
Hello. Recently I've ran into a problem about 3D graphics. The problem is I have some sorted data (data is represented by a collection of dots with coordinates X, Y, Z). What I need to do is draw a coordinate system with three normals (X, Y, Z) and render those dots according to their coordinates. Any help would be welcomed, but I woul...
hello all i need to develop simple 3d application ( i don't know if its going to be java or c++ ) now how to use 3d engine i know , but in the end i need to produce rendered image or movie out of the 3d scene. who should i do it in application ? ...
I have recently focused on drawing some cool shapes in a HTML 5.0 canvas. And I want to write a 3D graphics engine which can be used in JavaScript. I have already finished a rotating cube. And I want to finish the shapes like this example: http://gyu.que.jp/jscloth/touch.html. Who have ever tried in this field ? Let us learn from each o...
I am programming in Flash for a long-time. It is interesting that most of the things, including open source libraries, are very high-level in the Flash world. It is great because we can build things up quickly. But Flash is too slow (I want to do CV stuff, visual effect, generative art etc). I have tried glut, Processing, OpenFrameworks...
hi guys! I'm messing around a bit with the new fp10 drawing api and drawtriangles. i've created a little something i think is kinda of cool, though i can't seem to get the uv-mapping working as i want. since i'm just moving points in z/y direction i don't really have and z-value to calculate the uv with. though the bitmap texture gets di...
Hi all, Im trying to get my 3D sphere to rotate when a user moves their mouse/finger over the sphere. I can get it to rotate no problems, but when I try to add inertia to the sphere using the Affine2DInertiaProcessor in the Surface SDK, I get jumping issues when I quickly flick the sphere, and I dont know why... Here is my initialisat...
I'm working on a 3d game just for learning. I have a 3d world generated from a heightmap and various mesh based objects overlayed onto that world. I want the player to be able to target objects in the world which I can do, but I want to draw a targetting circle on the terrain or object that the targetted thing is standing on. If you've...
I'm working with about 20 objects that are moving around in 3D space. Adobe recommends "Using Matrix3D objects for reordering display": Use the getRelativeMatrix3D() method of the Transform object to get the relative z-axes of the child 3D display objects. Use the removeChild() method to remove the objects from the display list. Sort t...
I need to know what the visible height of a display object will be after I change it's rotationX value. I have an application that allows users to lay out a floor in 3D space. I want the size of the floor to automatically stretch after a 3D rotation so that it always covers a certain area. Anyone know a formula for working this out? E...
Quaternions are good for interpolate rotations between them. so far so good. If I have a networking game, will it suffice to transfer the rotation as vector3f or should I use a quaternion? To make the game smoother I may have to interpolate between the last sent rotation and the current one. But can I interpolate rotations between two ...
I've got a arbitrary collection of 3d points, i know they're coplanar, but how do i calculate that plane? ...
This is a pretty basic question. I am wondering if the Unreal Development Kit can be used for something other than games, specifically a light show simulator and editor. The site says: Unreal Engine 3 has been used by game developers, researchers, television studios, machinima directors, artists and students. If you have an idea that...
In a 3D scene we often need to apply labels (little textelements or icons) next to 3D object that is moving around (rotation, translation) in the scene. These labels should always face the camera but still move with the object. This technique I believe is called billboard. An additional cool feature would be if the label would stay al...
I have a complex 3D scene consisting of Model3DGroups that I need to analyze at runtime. Since Mode3D nodes do not participate neither in the VisualTree nor in the LogicalTree is there any other way I can find the parent of a Model3DGroup? ...