All Questions
Tagged with rotation javascript
18
questions
0
votes
1answer
114 views
How can I fix sprite vibrating randomly which is moving towards the mouse while using camera.position set to the sprite as the center?
So, when I use
camera.position.x = player.x;
camera.position.y = player.y;
to set the center of camera to my sprite, the code doesn't work as intended to. It's ...
0
votes
2answers
66 views
How to calculate turret position after rotation
I'm trying to make a tank character for my game but I couldn't do the math of firing bullets from turret instead of center of the tank.
I tried some Stack Overflow solutions but I couldn't understand ...
1
vote
1answer
89 views
Why is my sprite moving 90 degrees to the right?
I have a sprite which i'm trying to move towards the top of the screen with the left and right buttons adjusting the heading.
However when my heading = 0; my ...
2
votes
1answer
427 views
Rotate directly towards a target at a constant speed
I've written a program (see on JS Fiddle) that rotates my player towards the mouse cursor at a constant speed. I've computed the angle to the point using the ...
0
votes
1answer
202 views
How to calculate a simple swivel rotation? (no physics engine)
Assuming i know the geometry and the rotation angle of a cart, how can i calculate the rotation angle of a swiveling wheel?
To get the rotation angle of the wheel, i tried by calculating the distance ...
0
votes
0answers
823 views
Tweening back from arbitrary 3D rotation in javascript
I'm using a 3D javascript library to rotate the vertex of a 3D object with a classic 3x3 matrix, to an arbitrary angle in the 3D space, as depicted in the image below.
For example, a first rotation ...
0
votes
1answer
131 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.
0
votes
2answers
22k views
Rotate an object smoothly by 90 degrees on key press in unity3D
[I saw few similar question on stackexchange but none is solving the purpose.]
I want to rotate a 3D object by 90 degrees on different axis on respective inputs. For example if 'a' is pressed, the ...
2
votes
1answer
3k views
Three.js camera turning leftside right
In Three.js I am trying to implement an orbiting camera can be rotated around the x and the y axis. I am using these two functions:
...
4
votes
1answer
2k views
How can I restrict the rotation of an object to a subset of axes using quaternions?
I've got a question about quaternions in my WebGL application.
How can I rotate an object only around two axes? For example, how can I exclude/nullify rotation about the Y axis?
The problem is that ...
1
vote
1answer
4k views
JavaScript: Rotating a canvas around its center for a 2D sidescroller
I've been making a 2D sidescrolling game using JavaScript and HTML. The game is set in space, where the player character can fly around (Up, Down, Left and Right keys) and rotate the world around him (...
2
votes
1answer
1k views
How to make bullets follow a rotating sinewave pattern
I am trying to replicate the wave gun from Super Metroid where the bullets fly along a sine wave path. The cool part is that you can shoot in 8 directions and the bullet still follows the sine as if ...
6
votes
2answers
28k 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 ...
0
votes
0answers
65 views
Sprite rotation algorithm [duplicate]
I'm making a game where you have to plot a function to hit certain objectives. I already made the plotting function and the animation to display a tiny missile that travels above the function. My ...
1
vote
1answer
588 views
Rotate 2d sprite towards pointer
I'm using Crafty.js and am trying to point a sprite towards the mouse pointer.
I have a function for getting the degree between two points and I'm pretty sure it works mathematically (I have it under ...
2
votes
2answers
1k views
Stop a rotating object at a specified angle?
I'm working in JavaScript with HTML5 and the canvas. I have an object which is rotating at a certain speed, and I need the object's rotation to slow down gradually and the front of the object to stop ...
2
votes
2answers
11k views
Rotate sphere in Javascript / three.js while moving along x/z plane
I have a sphere/ball in three.js which I want to "roll" around on the x/z plane. For the z axis I could simply do this no matter what the current x and y rotation is:
...
1
vote
2answers
2k views
Matrix rotation of a rectangle to “face” a given point in 2d
Suppose you have a rectangle centered at point (0, 0) and now I want to rotate it such that it is facing the point (100, 100), how would I do this purely with matrix math?
To give some more specifics ...
