All Questions
Tagged with perspectivecamera 3d
81
questions
6
votes
1
answer
6k
views
ThreeJS: Calculating FOV for perspective camera after browser window resize
I need to obtain the correct Three.JS camera FOV after the browser window size has changed. I have viewed the following questions, but can't seem to find an answer for my question:
How to calculate ...
- 541
5
votes
1
answer
3k
views
Transformation of 3D objects related to vanishing points and horizon line
I'm trying to computing the exact prospective transformation of a 3D object starting from a vanishing points and horizon line of a picture.
What I want is, fixed the vanishing points and horizontal ...
- 51
5
votes
2
answers
2k
views
ARKit Perspective Correction
I'm working on a project with ARKit and I'm trying to do a perspective correction of the ARFrame.capturedImage to orient a piece of paper sitting on a detected plane so I can feed that into a CoreML ...
- 6,454
4
votes
5
answers
9k
views
raycasting: how to properly apply a projection matrix?
I am currently working on some raycasting in GLSL which works fine. Anyways I want to go from orthogonal projection to perspective projection now but I am not sure how to properly do so.
Are there ...
- 703
4
votes
1
answer
9k
views
rotating perspective camera around an object in javaFX
How can I make camera rotate in circle around a 3d object in javaFX? I know i can rotate it around itself using
camera.setRotate(angle);
but i want an object to be still and the camera to rotate and ...
- 348
4
votes
1
answer
4k
views
Finding the angle of a perspective image
I'm working on a floor design app that allows the user to pick preset floor images and view them within a preset room image.
My problem is I'm struggling to get the perspective of the floor image to ...
- 351
4
votes
5
answers
3k
views
WPF flickering during animation in Viewport3D
I'm having some strange behaviour inside a WPF app I'm writing. When I run an animation on the camera position (a Point3DAnimation on PerspectiveCamera.PositionProperty), I get really bad flickering ...
- 15.7k
4
votes
2
answers
785
views
Why does my perspective implementation fails in displaying my cube's faces?
I wrote a program that takes in entry some points, expressed in 3D coordinates and that must be drawn in a 2D canvas. I use perspective projection, homogeneous coordinates and similar triangles to do ...
- 3,119
4
votes
1
answer
4k
views
Making an object fit exactly inside the camera frustum in Three.Js
I am trying to make an object fit inside the camera frustum, and I went through all the trigonometry for that, and this is the code I used.
var setupCamera = function() {
aspectRatio = window....
- 1,586
4
votes
2
answers
3k
views
Moving objects parallel to projection plane in three.js
I want to move objects along a plane parallel to the projection plane with the mouse. This means during the movement the distance between any picked object and camera projection plane (not camera ...
- 1,304
3
votes
2
answers
2k
views
in opengl why do we have to do gluPerspective before gluLookAt?
so under GL_PROJECTION I did
glu.gluPerspective(90,aspect,1,10);
glu.gluLookAt(0,0,3,0,0,0,0,1,0);
this works fine but when I switch the order I don't get any object on my screen, I rotated ...
- 607
3
votes
1
answer
1k
views
Ogre/Mogre: Camera two point perspective
I'm displaying a scene with some cubes in it. The camera uses persective. Everything works great, but I'd like the vertical lines to be parallel (two point perspective: http://en.wikipedia.org/wiki/...
- 192
3
votes
1
answer
501
views
JavaFX Separate Perspective View on a 3D Chess Field
I got following game-window:
http://www.directupload.net/file/d/3598/b48lqpur_png.htm (Sorry cant post img here)
The red Box is a VBox (or an other Container, i cant decide yet).
And i wanna set a 3D ...
- 77
3
votes
1
answer
2k
views
OpenGL Perspective Projection pixel perfect drawing
The target is to draw a shape, lets say a triangle, pixel-perfect (vertices shall be specified in pixels) and be able to transform it in the 3rd dimension.
I've tried it with a orthogonal projection ...
- 113
3
votes
2
answers
480
views
Why does graphics pipeline need mapping to clip coordinates and normalized device coordinates?
On perspective projection, if I use simple projection matrix like:
1 0 0 0
0 1 0 0
0 0 1 0
0 0 1/near 0
, which is just projecting onto the image plane. It can be easily get view space ...
- 565