But after this subtraction, all of the vectors are now relative to the camera, so no precision loss occurs from that point up until to the GPU and so on. When we subtract the two numbers we get a rough result (definitely not 0.0000002) since the float is adaptive precise (not fixed precise like fixed point numbers). because objects vector is something like this :ģ234152.0000012 and camera vector is something like 3234152.0000010. As you know, for example when we get a single frame in the render loop, rendering engine first subtracts the object's position vector from camera position vector to determine the vector from the camera to the object.Īt this point, floats and even doubles are not precise enough to calculate this difference vector. The link you pasted suggests using int64 instead of floats while subtracting the object's location from the camera location (while converting scene coordinates to viewport coordinates). Yes indeed i am dealing with objects on the world and the world itself! Kojack thank you very much for the link it has been very helpful. Value = 'Consistent' Īnd already using that from the begining but not helped me. I am very deeply stucked on this issue and need help!

I have searched the AxiomForums (found nothing) and Ogre Forums and found that (not sure but.) OGRE has an editable definition to change the float precision from 32bit to Max 80bit (DirectX support) and also can use doubles instead of floats!!! I think it must be triggers like this :

Since i have to move between very high ranges and try to draw very low ranges (imagine the precision differance between the world itself and little a house) it maybe seem as hopeless, but. I also have some Z-fights between my some object and these both problems are can not be handled by increasing the NearPlaneDistance It seems that it is all due to floating point precision. Protected override bool OnFrameStarted(object source, FrameEventArgs e)Īnd my output is start to change after the 28th rotation Vector3 axis2 = testNode.DerivedPosition īaseNode.Rotate(axis2, 2f, TransformSpace.World) ĭebug.WriteLine('after: ' + testNode.DerivedPosition) TestNode = baseNode.CreateChildSceneNode()

create the test node as child of base node OGRE can be (and indeed has been) used to make games, but OGRE is deliberately designed to provide just a world-class graphics solution for other features like sound, networking, AI, collision, physics etc, you will need to integrate it with other libraries, something several frameworks have done, and we have a collision / physics reference integration library as an example in our distribution.// setup base node with some rotation and translationīaseNode = () īaseNode.Position = new Vector3(0f, 0f, 0f) Also, take a look at the screenshots page to see for yourself the kinds of eye candy OGRE can pump out.Is OGRE A Game Engine?No. The class library abstracts all the details of using the underlying system libraries like OpenGL and Direct3D and provides an interface based on world objects and other intuitive classes.What can it do?Lots of things! See the features page for an up-to-date list of the current features. OGRE (Object-Oriented Graphics Rendering Engine) is a scene-oriented, flexible 3D engine written in C++ designed to make it easier and more intuitive for developers to produce applications utilising hardware-accelerated 3D graphics.

Ogre engine parenting