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

learn more… | top users | synonyms

2
votes
1answer
259 views

In UE4, how do I turn my character's body together with the camera?

I made a simple punch animation in Blender and exported it into Unreal Engine 4. In-game, the character appeared from a 3rd-person perspective, but I made it look like first-person by adjusting the ...
0
votes
1answer
31 views

Libgdx rotate sprite with collision

Im making a game where I have an object in the center of the screen and then balls come out from the sides of the screen. When you touch the screen the object rotates 90 degrees clockwise and it has ...
0
votes
1answer
156 views

Rotate arrow without using Unity3d physics engine

I have this code that simulates the movement of a projectile without using the unity physics engine IEnumerator LaunchProjectile(int angle, float speed) { // Move projectile to the position of ...
2
votes
1answer
66 views

Euler adjustments between two quaternions

I have two quaternions, q1 and q2. If my object's current rotation is at q1, but I need to get it to q2, what would be the process to figure out how much rotation I apply to x, y, and z in order to ...
0
votes
2answers
53 views

Moving a ship forward from rotation

I am making a simple space simulator, where the player can control a ship using 2 controls, one for pitch and one for bank. The ship is properly rotated but I cannot figure out how to make the ship ...
1
vote
3answers
212 views

Gradual rotation of an object in Java

I'm using Java to learn some movement algorithm. I would like to implement the "wandering" algorithm, but in order to do it, i should understand how to rotate an Object gradually. Actually, my Player ...
1
vote
1answer
49 views

Problems making a smooth character rotation

My character has an angle rotation, when the player touches the screen it automatically face to the place that the player touched, using atan2(y,x) and Math.radiansToDegrees methods, but I want it to ...
0
votes
0answers
29 views

NavMesh.SamplePosition() fails after rebaking NavMesh?

So today I was refurbishing a scene when this happened. After baking a new Navmesh the SamplePosition() returned only infinity. I tried a lot of things out but eventually went back to an older version ...
2
votes
1answer
101 views

Increment grid by rotation

I'm currently working on a grid for snapping objects side by side. My current script is working fine, but only for game objects which haven't been rotated. Here is an example video of the problem: ...
0
votes
1answer
193 views

LibGDX make an object rotate around something

I need to rotate and object, which should be a circle made up with a ShaderRender, around a specified point. In LibGDX there is a method or something which allow me to do this? If it doesn't exist how ...
2
votes
2answers
51 views

Strange behavior with transformation matrix

I'm fairly new to transformation matrices. I'm using them to translate and rotate nodes and their child nodes. The following code works when applied once, but shows strange behavior when applied many ...
3
votes
2answers
1k views

Matrix rotation wrong orientation LibGDX

I'm having a problem with matrix rotation in libgdx. I rotate it using the method matrix.rotate(Vector3 axis, float angle) but the rotation happens in the model orientation and I need it happens in ...
1
vote
4answers
90 views

Rotate Sprite towards another sprite

I have a Sprite class like this: class Sprite { double rotation ; // in degrees 0-360 double x; double y; } I'd like to have one sprite to rotate to another point with a constant rotation ...
0
votes
1answer
48 views

How to rotate a triangle towards the point in Qt?

I have an issue with items rotating. I have a point and a triangle which needs to be rotated with its apex point towards the taregt point. The right side of the picture represents how it is should to ...
4
votes
2answers
503 views

Jittery Movement, Uncontrollably Rotating + Front of Sprite?

So I've been looking around to try and figure out how I make my sprite face my mouse. So far the sprite moves to where my mouse is by some vector math. Now I'd like it to rotate and face the mouse as ...
0
votes
0answers
16 views

C++ Opengl rotation Rotating vector before transform still rotates around 0,0,0… In world position [duplicate]

So how should I get this to work in local position? (Ie, moving to 4,0,4 and rotating around 4,0,4 . (x,y,z)) Here is where I add models / verticies: glm::vec4 pos = glm::vec4(1.0); glm::mat4 ...
0
votes
1answer
32 views

libgdx limit angular speed

I'm working on my top-down game. y characters use pathfinding + steering behaviors(Arrive and FollowPath) to move. I've implemented my character class from libgdx SteeringActor class (from tests). So ...
1
vote
3answers
1k views

How do I determine the look-at vector of a free-look camera?

I'm trying to create a free-look camera with DirectX 10. I've figured out how to get the directions for forward and back and left to right. However, I don't know how to rotate the look-at vector of ...
3
votes
1answer
78 views

Rotate sprite along the angle between two objects

Im trying to make flames follow my object, I set the direction for my moving object using the points between it and another object (using static destination for testing). No matter what I do I ...
1
vote
2answers
29 views

Increasing the rotation angle on a quaternion makes the rotation stop at a certain angle

I'm using the following code to change the rotation of an object: Quaternion rot = getRotation(); setRotation(make_quaternion_axis_angle(rot.v,rotationSpeed*dt)*rot) This code works as expected ...
2
votes
1answer
184 views

How do I ADD gravitation to a rotation matrix?

I have ported the Matlab script from https://instruct1.cit.cornell.edu/courses/bionb441/LSystem/ to POV-Ray and everything works fine (although I'm not quite sure why). To navigate a "turtle" through ...
-1
votes
1answer
37 views

Rotation and Velocity vectors

I've looked through the suggested, but I can't see exactly what I need. I want to calculate the vector needed for forward motion of a rotated sprite. At the moment I have: sprite.Rotation = ...
-1
votes
2answers
73 views

Rotation, what is the Matrix?

From a previous question, thank you very much by the way, but what on earth is the Matrix of? I'm very new to Mono/XNA and finding any meaningful documentation is practically impossible. point = ...
3
votes
2answers
314 views

calculating torque from angular momentum considering inertia moment

so I am trying to determine exactly how much torque to apply to a 3d model to make it rotate at a particular rate. I apply force from the location of each engine on the craft so if one breaks the ...
-1
votes
3answers
44 views

Changing the central point for transform [duplicate]

I'm trying to rotate all sprites in the view port around a central character. I have made some progress, using the following I can get my ship to rotate around the coordinates 0,0, with the radius ...
0
votes
3answers
153 views

Position child on the edge of the parent circle while scaling unity3d

I have come across to some different situation. I have one circle sprite and i am rotating circle continuously while rotating i want to make circle smaller and larger. I have one object on the edge ...
0
votes
2answers
50 views

Help With Rotating Turret and Muzzle Flare Sprites

I am making a top down game that involved tanks rotating their turrets and firing at other tanks. I have the turrets rotating independently of the tank itself about the center. However, I am now ...
0
votes
1answer
69 views

How should I rotate vertices around the origin on the CPU?

I have tried using glm::rotate and such. glm::translate works fine, but rotate doesn't work (if I rotate before/after a translation). Here is my current setup: glm::vec4 Off = glm::vec4(0, 0, 0, 1); ...
0
votes
1answer
83 views

Would Raycast suffice for a game clock based on sun position?

I need help with some logic in my script. I created a dynamic day/night cycle that works fine in itself, but I want to add a game clock that works off the initial position of the sun (Directional ...
0
votes
1answer
14 views

Rotating the playing field. (MonoGame) [duplicate]

My maths isn't as good as it should be, I need to pick up some reference books on Trig. Could someone give me an idea of the maths if I wanted to revolve many sprites around a central point? It's a ...
0
votes
1answer
224 views

How can I add banking and rotation to this object manipulation script?

I have made a drone script that allows user to move in four directions and ascend/descend. I found a nice tilt snippet which makes the thing bank when it moves. However, when I include this, the ...
2
votes
1answer
91 views

How to avoid Gimbal Lock on Rubik's Cube [duplicate]

I am making a Rubik's cube program. That will simulate a Rubik's cube. I am having problems with gimbal lock. I need to know how to avoid it. To my understanding I can either multiply the x, y, z ...
1
vote
1answer
53 views

Camera rotation according to target direction

I am facing issue when camera is following to my target and target rotates to 90 degree or -90 degree than camera is not rotating.i want smooth rotation according to target when target is change the ...
0
votes
1answer
46 views

Unity Animated Player Character Rotation Glitch

I was wondering if anyone experienced this issue in Unity with Mecanim-animated characters ... I have an animated player character with a third-person camera control (Game Camera from the asset ...
0
votes
1answer
54 views

Rotation Continuity help

First the issue im having: Basically its the fact that the angles of a circle aren't continuous, they rise from 0 to 2pi then immediately fall back to 0. I want to make a game where the player ...
0
votes
0answers
24 views

how to pin down a sprite partly in unity?

I am working on a simple do not let the bombs hit the floor game for android. You control a stick which can rotate to left or right depending on where on the screen you touch (left or right). But I ...
0
votes
2answers
617 views

Mouse Aiming Causing Rotation Jitter

When our game's ships move around, mouse aiming causes them to shake around a lot. The body being aimed is moved kinematically. I think we've narrowed it down to this block of mouse tracking code. ...
1
vote
1answer
26 views

Problem finding correct value for Yaw

I use an Arduino and a 9dof sensor ( gyroscope, accelerometer and magnetometer ) and i'm trying to use the pitch, roll and yaw that the sensor gives me to rotate an object in unity. I managed to ...
1
vote
0answers
35 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 ...
4
votes
2answers
9k views

Is it possible to rotate an image on an HTML5 canvas, without rotating the whole canvas?

So I basically want to rotate single sprites on the canvas without rotating the whole canvas, is that someway possible. I also don't want to create a new canvas for each object I have. Also, it ...
1
vote
1answer
33 views

Should I store local forward/right/up vector or calculate when necessary?

I'm working on an object picking and translation/rotation/scale gizmos system in my engine where you select objects and perform transformations on them in a 3d editor-like fashion (e.g. Blender) In ...
-1
votes
1answer
54 views

How to pitch, yaw, roll, an object like a flight simulator in OpenGL?

I'm working on a college Graphics project using LWJGL (OpenGL in Java). I've done most of the scene but I got a problem in figuring out the jet's orientation. Here's how I tried it at the very ...
4
votes
1answer
94 views

Rotate billboard towards camera

I'm trying to create a particle system in OpenGL, and as such I need to use billboards. I need these billboards to face the camera at all times. The tutorials I've been following only rotated the ...
2
votes
3answers
5k views

LWJGL glRotatef() without rotating axes?

Okay so, I noticed when you rotate around an axis, say you do this: glRotatef(90.0f, 1.0f, 0.0f, 0.0f); That will rotate things 90 degrees around the x-axis. However, it also sort of rotates the y ...
2
votes
2answers
97 views

Combining two independent rotations relative to the world frame

I am implementing a mouse rotation which works by accumulating the X-Y delta between frames to yaw and pitch rotation angles. The problem is that I wish rotations to be independent of each other. But ...
0
votes
1answer
56 views

Rotations of a Rubik's cube

I made a Rubik's cube by arranging smaller cubes. Now I want to apply animations to it. For that I am choosing to use the Rotate class and set the angle of rotation and the axis of rotation,like this ...
0
votes
1answer
34 views

Rotation of a cube

I came across the statement "rotation about a pivot and an axis" in javafx. The axis is defined byPoint3D and the pivotX, pivotY and pivotZ are of double type. I could not form a relation about what ...
2
votes
1answer
77 views

Calculating rotation matrix for an object relative to a planets surface in MonoGame

I have a 3D planet and I would like to place models on the planet and have them start with a base rotation relative to the planet surface at their location. So a model at the north pole will have zero ...
1
vote
1answer
52 views

How to calculate a vector for multi-axis rotations from sphere coordinates?

I'm working on a SceneKit project in iOS, trying to rotate a sphere (representing a planet) so that a point at a given longitude/latitude coordinate is facing "forward" (i.e. that point moves to the ...
0
votes
1answer
34 views

Rotate sprite direction Cocos2d

I want that my sprite go always forward, and you can only control his direction moving right and left (on 360 degrees). I don't know why, but the movement it's senseless. The constants to move and ...