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

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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 ...
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81 views

Given a 3d goal point and a turn rate in radius, find max speed to reach goal

I'm working on a 3d space sim with AI agents flying ships through space. I am trying to get them to follow a waypoint path nicely, which involves figuring out how fast they can be travelling and still ...
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39 views

Rotation of rectangles offsets render position

I have an unknown number "Bricks" that must follow a straight, but not always level, path. Each brick is rotated around one central point properly to form a shape of intersecting paths. My problem ...
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33 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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146 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 ...
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42 views

Rotate Object inside room according to wall

I have a room. I am trying to move an object whenever it collides with a wall. It's working properly except at the edge of two meeting walls. At the edge it's flicking. I tried to move the object when ...
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1answer
21 views

Finding specific coordinates on a rotating line

I'm currently working on a mobile game which mainly consists of a rotating line and a ball. The line rotates 0.500 degrees clockwise around its center every frame. The ball is at first positioned in ...
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1answer
244 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 ...
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1answer
109 views

Quaternion.LookRotation() not rotating 360 degrees

In my scene I have two cubes one has a tag "Respawn" and another one has the following script attached: ` using UnityEngine; using System.Collections; public class NewBehaviourScript : ...
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2answers
309 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 ...
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3answers
68 views

How much to roll Z to make horizon level

I've got a flying camera with some arbitrary rotation. (It also has a translation, but that's not important.) It's flying along its local Z axis, traveling in some direction over the ground with ...
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74 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 ...
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118 views

Rotating A 2D Cannon Based On Mouse Position [duplicate]

I'm creating a game like bubble shooter, I have a cannon which is in the image bellow: I want to rotate the cannon based on mouse position. So far I tried various solutions I found over the web but ...
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70 views

Faking Perspective/Depth using 3D images converted to 2D sprites - Can't work it out!

after a lot of searching/reading/viewing old school game videos I am still unable to work out how to achieve the effect I am after. I am currently working on a 2D "overhead view" sci-fi RPG, using a ...
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18 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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1answer
25 views

How to use rigitbody2d.AddTorque() in JavaScript? (unity2D)

I just want to know how to use rigitbody2d.AddTorque() and an example script would be great :D. I am trying to rotate a cube forever using it as a test.
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3answers
292 views

Projectile Rotation During Flight (Tank Game)

I have a tank firing projectiles into the air. I want the projectiles to be rotated relative to their position along their flight path. See the diagram I drew in the image below. At any given point ...
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1answer
206 views

THREE.JS: why is the rotation only applied on the last axis used?

my function: function rotateAroundWorldAxis2(object, radians1, radians2) { object.rotWorldMatrix.makeRotationX(radians1).makeRotationZ(radians2); // object.rotWorldMatrix; ...
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1answer
94 views

How to implement angled surface?

I'am trying to implement 2D platformer game inspired by N game. But the problem is I have no idea how to implement something like this: I have two ideas of how this could be implemented but i ...
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48 views

Simulate a velocity sensor attached to a softbody node with bullet physics

I try to implement a virtual three-axis velocity sensor attached to a softbody node. The node already provides it's global position, normal and velocity, but how to calculate it's local velocity to ...
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1answer
126 views

XNA 2D rotation Matrix offset/origin

I'm currently struggling with finding the offset for my original camera translation after I have applied a rotation for it. transform = Matrix.CreateScale(new Vector3(1, 0.75f, 1)) ...
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1answer
67 views

Quaternion rotations & transforms from global to local space

I am trying to solve this problem and getting no where, could really use some assistance. Rotation is defined as X (rotate left/right), Y(rotate up/down), Z(roll) Coordinates are X: Forward/backward, ...
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1answer
108 views

Unity 3D - Rotate towards object with random offsets

Title is a little confusing, but let me explain: I want to make the enemies look at the player, and shoot at him, with random precision, meaning that one time the enemy will shoot a little bit to the ...
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1answer
194 views

FPS horizontal smooth camera rotation

I have a problem, my camera is parented to the FPS Controller prefab, then there is a script I wrote for the rotation of the player horizontally by mouse movement, it all works but the rotation is ...
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44 views

Rotation matrix is being inconsistent with pitch and roll

I'm calculating the rotation matrix for a turret when it's at an angle in Javascript. I have XYZ co-ords for the turret and target with X being 90 degrees right, Y being straight ahead and Z being ...
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1answer
50 views

Rotating the view around the origin of the world coordinate system

In OpenGL (using shaders), I want to implement a system that will take the user's mouse as input, and then rotate the view about the origin of the rendered scene. So, I need to compute the view matrix ...
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2answers
521 views

Make camera follow and rotate with player without childing it

I want to have a camera, that follow the player, without childing it to the player object. So far I have this one line, that follows the player, but does not rotate with it (meaning the camera should ...
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2answers
159 views

How to make sprite move in any direction?

I have an arrow sprite that rotates based on where my cursor is pointed, I can only make it move up,down,left and right.How about in a diagonal way? //this is the rotation nt x=Gdx.input.getX(); ...
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2answers
150 views

Unity 3D - Confine a gun rotation within certain degrees

I am having troubles making my gun rotate up and down, and have limits, for example, I want the down limit to be 0 degrees, and the up limit to be 90 degrees. Currently I can't figure out how to ...
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1answer
88 views

Rotation in 3D space using Quaternion

System Configuration I have two simulation systems (which I am going to call Sim-A and Sim-B) where I am going to spawn an entity created in Sim-A inside Sim-B. Expected outcome The entity created ...
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3answers
103 views

Unity - Check if object is facing Vector3 coordinates

I am having a hard time figuring this out, I want to have objects that move around randomly, and when they get new coordinates to move towards, face them, and then move. Here's explained: Target ...
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3answers
43 views

How to rotate a whole rectangle by an arbitrary angle around the origin using a transformation matrix?

Suppose, I have a rectangle ABCD. Where, A(0,0), B(7,0), C(7,5) and D(0,5). I want to rotate the whole rectangle by theta = 50°. I know that, a rotation transformation matrix can be used to do ...
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198 views

Object Rotation with mouse around his axis using Quaternions

I faced a couple of days ago a gimball lock problem , trying to rotate an object on openGL 2.1. I have done some researches and found out that Quaternions could help me. So I implemented the class ...
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1answer
137 views

OpenGL 2.1 rotation , Gimball lock

I'm working on a little app for a school project , which should be manipulating 3D objects. And i'm stuck with the rotation , as i'm facing what i think is called the gimball lock ? here's a video I ...
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1answer
82 views

How to calculate if a point is contained in rectangular camera viewport with rotation?

I am working with my camera, and am trying to improve it so that I can calculate if a world point is on screen, taking rotation into account. Currently, my camera rectangle is calculated as so: ...
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2answers
52 views

Acceleration and Deceleration During Rotation

I'm attempting to have a sprite rotate in a way where its rotation speed increases until it has reached the halfway point in its rotation, to which it starts to slow down. I'm currently calculating ...
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79 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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90 views

Player rotation issues (Player returns to default forward rotation after releasing keys)

So basically what is happening is that my player rotates and faces the direction that he is currently being steered toward (which is wonderful). But after I release, let's say the A key, meaning he is ...
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1answer
141 views

Why is the camera tilting around the z axis when I only specified x and y?

My goal is to program a camera to point towards the mouse cursor. I attached the following script to the Main Camera. using UnityEngine; using System.Collections; public class CameraController : ...
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2answers
106 views

Rotation before scaling image/Lower resolution rotation? (XNA/C#)

Currently, when I rotate the image using SpriteBatch.Draw() the image is rotated after it is scaled. Resulting in: Which is using the code public override void Draw(GameTime gameTime) { ...
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140 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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1answer
88 views

Problem with Rotation - C#/XNA

I have a projecile(Hook) and the tail of the projectile(yellow balls) TailProjectile class draws a ball at the exact position of the projectile(hook) and let it there until the projectile ends I'd ...
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1answer
36 views

How can I modify the UV co-ordinates on a texture so they converge to a point?

I'm building a roof visualiser app, where someone can take a picture of their roof, define its outline, then visualise a new roof texture on it. I'm generating a 3D plane that matches the roof ...
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64 views

Libgdx polygon ratating

I'm using polygons for collision detection. Here is the code: poly = new Polygon(verticies); poly.setOrigin(100,100); poly.setRotation(45); renderer.setColor(Color.GREEN); ...
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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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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 ...
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1answer
58 views

Separate rotation transform from parent

I have a hierarchy like this Body - Head - Arms Currently this works fine in that the Body's transformation is reacting as it should. Being children, the Head and Arms match the Body's ...
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104 views

How can I keep the clicked point under the mouse when rotating? (GLM)

I have a spherical mesh of radius 1, centered at (0,0,0) in world coordinates. I want to rotate the sphere so that the clicked point remains under the mouse at all times. However, I cannot find an ...
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49 views

I have a script that changes an object to a broken version of itself when clicked, but it keeps rotating the object

So I have made a script in unity that you put on an object and when you click the object it will delete the object and replace it with a broken one I made in blender. My problem is that when I click ...
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1answer
273 views

How to rotate an object along its trajectory path?

I have a missile launcher that uses initial velocity for the trajectory. I edit the launch angle from the editor, and then the script calculates the initial velocity required to land the missile to ...