CS 476: Computer Graphics - Camera Viewing Exercise
Graphics content developed by Chris Tralie. Module autograding ecosystem designed by Chris Tralie and Bill Mongan.Exercise Goals
The goals of this exercise are:- Explore parts of the object-first pipeline in code
- Implement camera viewing matrices using homogenous coordinates
Scene
{
"name":"objectfirsttester",
"materials":{
"green":{
"ka":[0.0, 0.4, 0.0],
"kd":[0.0, 1.0, 0.0],
"ks":[0.8, 0.0, 0.0],
"shininess":10
},
"grayblueshine":{
"kd":[0.5, 0.5, 0.5],
"ka":[0.1, 0.1, 0.1],
"ks":[0.0, 0.0, 1.0]
},
"yellow":{
"kd":[0.5, 0.5, 0.2],
"ka":[0.3, 0.3, 0.0],
"ks":[1.0, 1.0, 0.0],
"shininess":5
}
},
"lights":[
{
"pos":[0, 2, 0],
"color":[1, 1, 1]
}
],
"cameras":[
{
"pos": [1.3, 4.3, 9],
"rot": [0, 0, 0, 1]
}
],
"children":[
{
"transform":[20, 0, 0, 0,
0, 20, 0, 0,
0, 0, 20, 0,
0, 0, 0, 1],
"shapes":[
{
"type":"mesh",
"filename":"../assets/js/ggslac/meshes/square.off",
"material":"green"
}
]
},
{
"shapes":[
{
"type":"sphere",
"radius":0.5,
"center":[-3, 0, 3]
}
]
},
{
"transform":[2, 0, 0, -2,
0, 2, 0, 1,
0, 0, 2, 0,
0, 0, 0, 1],
"shapes":[
{
"type":"mesh",
"filename":"../assets/js/ggslac/meshes/homer.off",
"material":"yellow"
}
]
},
{
"transform":[1, 0, 0, 3,
0, 0, 1, 2,
0, -1, 0, -1,
0, 0, 0, 1],
"shapes":[
{
"type":"mesh",
"filename":"../assets/js/ggslac/meshes/dinopet.off",
"material":"grayblueshine"
}
]
},
{
"transform":[2, 0, 0, 0,
0, 1, 0, 0,
0, 0, 1, 0,
0, 0, 0, 1],
"shapes":[
{
"type":"sphere",
"radius":0.5,
"center":[0, 0, -10],
"material":"green"
}
]
}
]
}
Javscript Code
scene.camera.getMVMatrix = function() {
let right = this.right;
let up = this.up;
let eye = this.pos;
let matrix = glMatrix.mat4.create();
// TODO: Fill this in
return matrix;
}
Enter your Ursinus netid before clicking Check/Submit. This is not your ID number or your email. For example, my netid is ctralie (non Ursinus students can simply enter their name to perform the correctness check, but they won't get an e-mail record or any form of credit)
| Netid |