-
Notifications
You must be signed in to change notification settings - Fork 0
/
Copy pathk3.html
185 lines (151 loc) · 5.1 KB
/
k3.html
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
<!DOCTYPE html>
<html>
<head>
<meta charset=utf-8>
<title>three.js</title>
<style>
body { margin: 0; }
canvas { width: 100%; height: 100% }
</style>
</head>
<body>
<script src="../js/three.js"></script>
<script src="../js/helpers.js"></script>
<script>
/*
hexes
*/
var debugging = true;
//
// FIND OUR ORIGIN
var bounds = 100; // pixels from the edge of the window
var half_window_w = window.innerWidth / 2;
var half_window_h = window.innerHeight / 2;
var origin = new THREE.Vector3(
getRandomPoint( bounds, half_window_w ),
getRandomPoint( bounds, half_window_h ),
0
);
if (debugging) {
console.log( "WINDOW: " + half_window_w + "x" + half_window_h );
console.log( "BOUNDS: " + bounds );
console.log( "ORIGIN: " + origin.x.toString() + "x" + origin.y.toString() );
}
// okay that wasn't so bad
// Load the background texture
var pgw = parseInt(window.innerWidth / 250);
var pgh = parseInt(pgw / 2.1998);
var texture = THREE.ImageUtils.loadTexture( "img/42552158465_373e49c1f9_k.jpg" );
var backgroundMesh = new THREE.Mesh(
new THREE.PlaneGeometry(pgw, pgh, 0),
new THREE.MeshBasicMaterial({
map: texture
}));
backgroundMesh.material.depthTest = false;
backgroundMesh.material.depthWrite = false;
// Create your background scene
var backgroundScene = new THREE.Scene();
var backgroundCamera = new THREE.Camera();
backgroundScene.add(backgroundCamera );
backgroundScene.add(backgroundMesh );
// foreground
var scene = new THREE.Scene();
var camera = new THREE.PerspectiveCamera(
75,
window.innerWidth / window.innerHeight,
1,
500
);
camera.position.set( 0, 0, 500 );
camera.lookAt( new THREE.Vector3() );
var renderer = new THREE.WebGLRenderer();
renderer.setSize( window.innerWidth, window.innerHeight );
renderer.autoClear = false;
document.body.appendChild( renderer.domElement );
var num_shapes = 5; // for Jupiter!
if (debugging) { console.log( num_shapes + " shapes" ); }
for (var l = 0; l < num_shapes; l++) {
if (debugging) { console.log("@" + l.toString()); }
// pick a random starting place
var random_point = new THREE.Vector3(
getRandomPoint( 0, half_window_w - bounds ),
getRandomPoint( 0, half_window_h - bounds ),
0
);
if (debugging) {
console.log(
random_point.x.toString() + "x" + random_point.y.toString()
);
}
var random_size = getRandomInt( 10, 100 );
var mesh = make_hex( random_point, random_size, '#ffffff' );
scene.add( mesh );
}
function animateAllTheThings() {
requestAnimationFrame( animateAllTheThings );
renderer.clear();
renderer.render( backgroundScene, backgroundCamera );
renderer.render( scene, camera );
}
animateAllTheThings();
function make_hex(p, r, c) {
// calculate a random depth (or elevation) for this shape
var depth = getRandomInt(0, 100);
// calculate a transparency based on that
var transparency = calculateTransparency(depth);
if (debugging) {
console.log("DEPTH (z) " + depth.toString());
console.log("TRANSPARENCY " + transparency.toString());
}
/*
totally (more or less) copied this from
https://codepen.io/jamaak/pen/KqOzom
*/
var points = [];
points.push( new THREE.Vector3(
p.x,
p.y + r
) );
points.push( new THREE.Vector3(
p.x + r * 0.866,
p.y + r * 0.5
) );
points.push( new THREE.Vector3(
p.x + r * 0.866,
p.y - r * 0.5
) );
points.push( new THREE.Vector3(
p.x,
p.y - r
) );
points.push( new THREE.Vector3(
p.x - r * 0.866,
p.y - r * 0.5
) );
points.push( new THREE.Vector3(
p.x - r * 0.866,
p.y + r * 0.5
) );
var hex = new THREE.Shape( points );
var geometry = new THREE.ShapeGeometry( hex );
var material = new THREE.LineBasicMaterial( {
color: c,
transparent: true,
opacity: transparency
} );
var mesh = new THREE.Mesh( geometry, material );
mesh.position.z = depth;
return mesh;
}
function getRandomPoint(lower, upper) {
var p = getRandomInt( lower, upper );
// positive or negative?
var whatwhat = Math.random();
if (whatwhat > 0.5) {
p = p * -1;
}
return p;
}
</script>
</body>
</html>