Rotation is the circular movement of an object around a specific axis.

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224 views

smoothly recenter view over time

I'm currently using the Google Cardboard SDK for Unity to build a fighter pilot simulator. What I'm currently trying to do is recenter the view(CardboardHead) smoothly over time when the user looks ...
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127 views

3D 3-axes rotation into 3D 2-axes rotation

Hello everyone and thanks in advance to anyone who'll help me through this ! I am currently working on the Kinect V2 (for XBox One) to interact with an avatar. I'd like to use the rotation quaternion ...
2
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74 views

Rotating kinematic object around a moving point Box2D

I'm new at Box2D and I am making a simple game where you control the rotation of the maze and the gravity leads the ball to the exit. The game looks like: The problem: I want to rotate the maze, ...
2
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306 views

Quaternion - rotating rigidBody to particular angle over time

Using Bullet Physics. There's a rigid body that is rotated. For some delta-time I need to rotate that body to have rotation of (0, y, 0) - keep the old y value rotation but reset x and z. The ...
2
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0answers
48 views

Xna 4 Model Rotation with inertia not working as expected with variable updates

I am trying to rotate a model with inertia damping with the keyboard. The code works great with a fixed time step but it doesn't behave the same with a variable update frequency. Update method: ...
2
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0answers
2k views

Arcball 3D camera

I have checked multiple threads before posting, but i havent been able to figure this one out. Ok so i have been following this tutorial, but im not using glm, ive been implementing everything up ...
2
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0answers
348 views

How to set object's / node's absolute rotation correctly?

Usually when I want to rotate an object/node in my Ogre scene I call the node's rotate() method. That rotates the node locally relative to it's current rotation. So for example, when I start with 0 ...
2
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0answers
863 views

Rotation of viewplatform in Java3D

I have just started with Java3D programming. I thought I had built up some basic intuition about how the scene graph works, but something that should work, does not work. I made a simple program for ...
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0answers
36 views

Fixing wave-like movements when rotating an object using mouse input in Unity

I have encountered a rather odd issue with my program. The setup: In my scene, I have a GameObject which I have set as my player/character for this game. The player/character has a child GameObject, ...
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0answers
43 views

Moving along the surface of a mesh?

I'm trying to replicate the movement in this game: https://www.youtube.com/watch?v=OcvD8BXars8 The players ship along with all other game elements move along the surface of a mesh. I've tried ...
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42 views

Rotation of a point around axis using quaternions

I have a simple processing program to rotate a point around arbitrary axis but it stops after a bit. I'm trying to get full rotation of the point around the axis. import org.apache.commons.math3....
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0answers
161 views

OpenGL ArcBall Camera

I'm currently working on a OpenGl Project and I have alot of difficulty understanding how arcball camera work. From what I have read online, all I have to do is to rotate a camera around a target and ...
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33 views

Translate D3DXMatrixLookAtLH to Unity compatible code

I am currently trying to port a really old Game (I have the source of it) to Unity as a fun project. And I'm currently stuck with the object rotation techniques in Unity compared to the ones used in ...
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0answers
37 views

How to find or compute or look for overall/max RPM by simply checking for rotation?

I find it hard to determine the wheel RPM since I'm only making a simple 2D game of rotating object via Z-axis. I wanna try this solution but I got no change since I'm trying to find the RPM from a ...
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0answers
185 views

How can I shoot an arrow if I know the shot power and target?

I am trying to shoot an arrow at a target with a 100% success rate. Given the initial force applied to the arrow, the gravity, the location of the archer, and the location of the target, how can I do ...
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0answers
38 views

Can I “Pre-rotate” VBOs while loading them in LWJGL?

It is possible to flip VBOs horizontally and vertically by swapping around destination coordinates. Is it possible to rotate an image by any angle, such as 45 degrees, using different destination ...
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0answers
23 views

Inverse kinematic joint limits

I want to limit the joint angle of my character. I have just one issue i can't get the value of the joint limits of the human -i search about max, min angle of each joint in x and y but i can't get ...
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0answers
118 views

How to calculate a quaternion rotation between 2 vectors with a specific final up vector?

I know you can calculate the quaternion rotation between 2 vectors with something like this after all the optimizations: quat quat::fromtwovectors(vec3 u, vec3 v) { vec3 w = cross(u, v); ...
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208 views

Hinge joint annoying wheels rotation in Unity

I try to made a little skate game prototype in Unity 5 and I just encountered an issue. I added a hinge joint between the board and each of the wheels couples (front and behind) so the board can move ...
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0answers
12 views

CanDraw in large hierarchical scene with rotation

I've been assigned to write small simulation visualization, that contains thousands of cubes (I know you heard that before). Now I'm working on optimization of stuff that takes place there, but ...
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0answers
204 views

How do I implement realistic recovery from weapon recoil?

I want to create an equation determining how fast a gun recovers back to its center after it has fired. I have a weapon system functioning based on constants (recoil amount, bullet spread, etc.) ...
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0answers
68 views

Unintended twisting of geometry while generating a mesh?

I am creating a real time animation of tori (toruses), and I've run into a problem where at certain angles of my tori, the geometry is twisting up where it should remain straight. Here is an animated ...
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0answers
90 views

Is there a way to rotate an Ellipse in libGDX for collision detection purposes?

I'm trying to avoid having multiple overlapping Circles for a UFO-shaped sprite. Two Ellipse objects will perfectly cover the shape of my UFO, but I want to tilt/rotate the UFO when flying left and ...
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436 views

Aligning a gameObject to position and normal of another gameObject inside Unity

So I am instantiating a GameObject (the one with cities and trees in the image below) and trying to align it to a hex tiles on a Sphere. So after I instantiate the gameObject, I ray-cast to get it ...
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0answers
437 views

2D Rotation Transform Matrix Issues

I'm stuck on my computer graphics class homework. I'm sorry if this is not right place to ask. I think this is closest thing to computer graphics. My assignment is to create basic 2D colored ...
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198 views

Rotating a scene around a fixed axis

I am looking for a way to move my scene so that when I translate forward/back/left right it moves directly up/down/left/right on the screen. Currently it does do that until I rotate (by anything ...
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0answers
140 views

X, Y, Z rotation around camera

I'm making a 3d orthogonal-projected, game using painters' algorithm in java. I'm able to rotate the objects with incremental rotations (e.g. rotate all objects 10 degrees) using affine ...
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0answers
145 views

PhysX - Revolute joint around unit vector

I'm using a right-handed coordinate system with (0,0,-1) = forward, (1,0,0) = right and (0,1,0) = up. PhysX version is 3.3.0. I have a unit vector which represents the axis around which my actor is ...
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674 views

Andengine Rotate Wheel with fast acceleration

I have a Wheel sprite and i am rotating it using Physics RevoluteJointDef. Its rotating. But problem is how i can make wheel to start moving fast. It took the speed after sometime like real. // ...
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0answers
3k views

Drawing and rotating bitmaps (with transparency) efficiently in Android

I just started making a game for Android and I'm already having some issues regarding performance. You can imagine the game as being some kind of Tower Defense game with a top-view, and the enemies ...
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134 views

Rotate view matrix based on touch coordinates

I'm working on an Android game where I need to rotate the camera around the origin based on the user dragging their finger. My view matrix has initial position of sitting on the negative z and facing ...
1
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0answers
676 views

Move parent according to child axis in Unity?

Can I ask my parent to move according to the child axis? This means if I turn right, then right again, the parent has to be at 180° from its original position, and not only at 90° (because "Right" ...
1
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0answers
203 views

Camera not staying behind model while moving in circle

I have a camera behind a model (3rd Person) and I'm having problems KEEPING it behind the model. When I first start my game, you see the back of the model. If the model moves forward, backward or ...
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319 views

Getting and Setting Rotation in XNA around the Center of my Model with XNA

Alright, so I'm currently debating how I want to do this. Basically this is what I'm trying to accomplish. I've created a system to allow me to make my environment a little bit easier. I'm ...
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0answers
863 views

Rotation deforming mesh (Opengl ES 2.0)

I'm trying to render a rotating cube on Opengl ES 2.0, using some math classes I wrote (based on a lot of online and offline info) for quaternions, matrixes and the like. As far as I know all the math ...
0
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0answers
5 views

Cocos2d How to get Smooth rotation of sprite when using Sprite->setRotation()

i have simple round circle joystick when i move the thomp on the circle joystick it moves simple sprite so when i get for example 40 Degress in the joystick i set the sprite setRotation(40) all this ...
0
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0answers
13 views

camera rotation animation problem

I would like to create a 3d person rotation where the camera rotates to the character rotation(follow camera which orbits around the character). It might be possible that the character rotation ...
0
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0answers
31 views

Position camera in opengl

I have a camera with a 3D vector that represent the position and a quaternion that represent the camera orientation. I'm trying to rotate and orientate the camera correctly, but I can't. I know that ...
0
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0answers
20 views

Rotating a UI arrow according to the change in camera's rotation

I have been trying different alternatives to do what is a very basic thing but I couldn't have any success. What I want to do is this. I have a 2D UI sprite at the screen, formed by 2 triangles, with ...
0
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0answers
24 views

Rotate camera with quaternions

I have a camera with a 3D vector, the position, and a quaternion, the orientation. I'm able to move the camera in a realistic way (respect the local axis) but I can't do the same with the rotation. ...
0
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0answers
30 views

How do I rotate enemies on NavMesh in Unity?

I have a NavMesh Script for my enemy but it just looks into my direction and if I run around him he is still looking in one direction and not turning and facing me, how can I rotate him in the script ...
0
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0answers
46 views

3d rotation of a cube using DirectX

I can't solve an apparently simple problem: i have a cube, similar to the one in the following picture I've tried to write a small demo where i can rotate the cube by dragging the mouse, but i can'...
0
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0answers
9 views

Unity 3d Js head bone rotations

There is another version of Head Look script (link here, and code below) https://xenoaisam.com/2015/04/28/unity3d-eye-focus-and-head-look/ This is a simpler open source code that works better with ...
0
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0answers
29 views

Camera movement on a sphere, and how to look while doing it

I am trying to make some kind of pointerlocked walking simulator that involves movement of the camera on the inside of a sphere. I've looked at Walking on a sphere, but that solution fights what I'm ...
0
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0answers
39 views

How to spin a 2D quad in place using only matrices?

In short, I have a textured 2D quad (a sprite). I would like to rotate/spin it about the z-axis (coming out of the screen) using nothing but matrices. If I do the following to a transform with scale ...
0
votes
0answers
34 views

How to rotate with quaternions

I need to simply rotate around an axis, but because unity uses quaternions for calculating i have issues with converting into euler angles. When i ask for rotation of an object in euler angles it ...
0
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0answers
58 views

How can I find the rotation of a hinge joint?

I'm wondering if there is a way to get the rotation of a hinge joint. Not the actual transform.rotation/localRotation/Rotate etc. but like the rotation of the hinge joint component. For example what I ...
0
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0answers
47 views

Can you explain the following C# script for camera behavior

Here is the script, it rotates the camera left right with a target "player in this case" rotating with it. using UnityEngine; using System.Collections; public class ControllingCamera : MonoBehaviour ...
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0answers
63 views

Making the CCTV and its Detection Area Pointing to the Player on Unity 5

I am now playing with the Unity Stealth project. Goal I want to make the CCTV pointing to the player (a sphere) instead of playing its rotation.y animation when the CCTV detection area is detecting ...
0
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0answers
102 views

How to programmatically create an animation that linearly interpolate between two rotations?

I would like to programmatically create an animation that linearly interpolate between two angles (using the shortest path). I wrote the following code : Animation anim = gameObject.GetComponent<...