Rotation is the circular movement of an object around a specific axis.
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1answer
3 views
Wrong pivot point of parent / wrong scale of children
I'm trying to make two objects, in is an intact glass, the other one is the glass but shattered.
So for the shattered glass, in Maya I make a Plane, cut it with the multi-cut tool, extrude the faces, ...
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2answers
33 views
Roatating a Game Object downward
In my game I have a rocket which is traveling horizontally across the screen.
What I am trying to do is when the player runs out of fuel, the rockets engine stops (already coded) and then the rocket ...
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1answer
20 views
Libgdx Sprite rotation around specific point
I made complex dynamic body that rotates around other body that is static. It works perfectly, however I got messed up with sprite position on that body.
Here's what I have now
and here's what I ...
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1answer
57 views
Rotating A model in 3D so it matches its direction of movement
So I have a model of a spear and when it gets thrown I want to set the orientation of the spear to its direction. ( I also want to use this for other things like bullets pointing in the direction ...
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0answers
33 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 ...
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1answer
19 views
Calculating a matrix to have the model follow terrain
So I've been messing around with 3D graphics in Java (using lwjgl), and I've hit a bit of a roadblock. I have a heightmap and a cube, and I want to find a way to have the cube rotate to follow the ...
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1answer
39 views
Rotate a UI Image exactly 360 degrees over the course of 1 second?
I have a UI Image that I want the user to click and have it rotate 360 degrees once on the z axis. I can get it to rotate through a coroutine but I'm having trouble making it stop once it is started.
...
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0answers
21 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 ...
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1answer
48 views
In Game Maker Studio, why does the image rotation have to be performed every step?
I'm a software developer who's trying to get into game development casually on the side. I picked up Game Maker Studio a while ago on a Steam Sale, and I'm finally getting into using it, especially ...
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2answers
51 views
Rotating hitboxes in pygame?
I'm using pygame.rect.colliderect() to check hitbox collision between sprites in my game, but now that i'm rotating the sprites, I'm realizing I can't do this because there's no way to rotate a pygame ...
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0answers
48 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 ...
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2answers
53 views
How do I stop the player from rotating when they collide with a tile?
I use Touch movement and if I jump and hit a corner with the feet of my player, my player rotates but I don't want this. Can anyone help me jumping without rotating if I hit anything ?
here is my ...
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1answer
35 views
BulletPhysics ship rotation
First of all, I'm a beginner in game physics, and I think this is a relatively easy problem that I'm not grasping.
Short Version:
I have a box(representing a ship on water) going forward with a ...
1
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1answer
67 views
How to clamp a direction vector within a direction pyramid?
In 2D you can specific an angle range such as [-45 to +45] and clamp a 2D direction vector within that angle range. I want to have something similar for 3D. I want to specify the allowed directional ...
1
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0answers
23 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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1answer
44 views
libgdx sphere rotation after movement
I'm moving my sphere on the screen using this method:
Matrix4 m = myBall.body.getCenterOfMassTransform();
Vector3 translation = new Vector3();
m.getTranslation(translation);
float multiplier = delta ...
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0answers
34 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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1answer
109 views
360 degree quaternion interpolation?
I am in the process of implementing interpolation into a simple game loop I am playing with after reading the infamous "fix your timestep" article (which is amazing by the way). I have the position ...
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votes
1answer
39 views
Getting vector relative to other vector in rotating object
So I have a rotating object a. It is rotating at non-constant speed around it's local x axis. It is parented to object b. When the object a rotates, it's local x axis stays facing the same direction ...
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vote
3answers
184 views
Box2d set sprite to body that rotates around specific point
I want to rotate kinematic body around a specific point (I already done this part using
shape.setAsBox(1.8f / PPM, 0.2f / PPM, new Vector2(5.2f, 0), 0);
What I try is this:
PolygonShape shape ...
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votes
1answer
78 views
Rotation around arbitrary vector (using quaternions?)
I currently have a camera which orbits a specific target object, always looking at it.
The user can drag the mouse to move the camera left/right/up/down and the camera will move over the surface of a ...
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votes
1answer
42 views
Rotate object with mouse look script
I would like to rotate an FPS camera slightly upwards during a shot as an effect of recoil, but the problem is that I have a mouse look script as well and I assume it prevents me from achieving the ...
1
vote
1answer
138 views
Unexpected quaternion rotation behavior
First off let me apologize for the vague title but I really couldn't think of a more descriptive one (maybe after reading this a more advanced user might be able to edit it).
Alright, so I have been ...
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1answer
48 views
Rotation in animation not working
I have a model of an SMG with arms exported from Blender and set to generic rig in unity import settings. I was creating an animation for this model in Unity Animation tab, it included changes in ...
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0answers
54 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 ...
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0answers
65 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 = ...
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votes
2answers
90 views
Aiming direction using mouse
I'm using the following code to rotate my object using mouse, for aiming direction. The only problem with this is that it only rotates between 0 to 180 and not full 360 degrees. Can any help me locate ...
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votes
1answer
74 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 ...
1
vote
1answer
57 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 ...
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0answers
37 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 ...
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votes
2answers
73 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 ...
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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 ...
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votes
1answer
52 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 ...
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2answers
41 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 ...
1
vote
4answers
94 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 ...
-1
votes
1answer
40 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 = ...
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votes
3answers
46 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 ...
-1
votes
2answers
80 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 = ...
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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 ...
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votes
1answer
108 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);
...
2
votes
1answer
115 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 ...
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 ...
1
vote
0answers
36 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 ...
1
vote
1answer
34 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
1answer
40 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 ...
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votes
1answer
103 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 ...
-1
votes
1answer
90 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 ...
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votes
1answer
65 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 ...
4
votes
1answer
135 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 ...
0
votes
1answer
72 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
...
