js实现蒲公英飞舞动画效果代码
代码语言：html
所属分类：粒子
代码描述：js实现蒲公英飞舞动画效果代码
下面为部分代码预览，完整代码请点击下载或在bfwstudio webide中打开
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<style type="text/css">
.custom-background{
height: 100vh;
width: 100vw;
background-image:url('//repo.bfw.wiki/bfwrepo/image/5e44fafbdc615.png');
background-size:cover;
background-repeat:no-repeat;
}
</style>
<script type="text/javascript" src="//repo.bfw.wiki/bfwrepo/js/jquery-3.2.1.min.js"></script>
</head>
<body class="custom-background">
<div class="snow-container" style="position:fixed;top:0;left:0;width:100%;height:100%;pointer-events:none;z-index:100001;"></div>
<script type="text/javascript">
// snow
var THREE = THREE || {};
if (!self.Int32Array) self.Int32Array = Array, self.Float32Array = Array;
THREE.Color = function(a) {
a !== void 0 && this.setHex(a);
return this
};
THREE.Color.prototype = {
constructor: THREE.Color,
r: 1,
g: 1,
b: 1,
copy: function(a) {
this.r = a.r;
this.g = a.g;
this.b = a.b;
return this
},
copyGammaToLinear: function(a) {
this.r = a.r * a.r;
this.g = a.g * a.g;
this.b = a.b * a.b;
return this
},
copyLinearToGamma: function(a) {
this.r = Math.sqrt(a.r);
this.g = Math.sqrt(a.g);
this.b = Math.sqrt(a.b);
return this
},
setRGB: function(a, b, c) {
this.r = a;
this.g = b;
this.b = c;
return this
},
setHSV: function(a, b, c) {
var d, f, e;
if (c === 0) this.r = this.g = this.b = 0;
else switch (d = Math.floor(a * 6), f = a * 6 - d, a = c * (1 - b), e = c * (1 - b * f), b = c * (1 - b * (1 - f)), d) {
case 1:
this.r = e;
this.g = c;
this.b = a;
break;
case 2:
this.r = a;
this.g = c;
this.b = b;
break;
case 3:
this.r = a;
this.g = e;
this.b = c;
break;
case 4:
this.r = b;
this.g = a;
this.b = c;
break;
case 5:
this.r = c;
this.g = a;
this.b = e;
break;
case 6:
case 0:
this.r = c, this.g = b, this.b = a
}
return this
},
setHex: function(a) {
a = Math.floor(a);
this.r = (a >> 16 & 255) / 255;
this.g = (a >> 8 & 255) / 255;
this.b = (a & 255) / 255;
return this
},
getHex: function() {
return ~~(this.r * 255) << 16 ^ ~~(this.g * 255) << 8 ^ ~~(this.b * 255)
},
getContextStyle: function() {
return "rgb(" + Math.floor(this.r * 255) + "," + Math.floor(this.g * 255) + "," + Math.floor(this.b * 255) + ")"
},
clone: function() {
return (new THREE.Color).setRGB(this.r, this.g, this.b)
}
};
THREE.Vector2 = function(a, b) {
this.x = a || 0;
this.y = b || 0
};
THREE.Vector2.prototype = {
constructor: THREE.Vector2,
set: function(a, b) {
this.x = a;
this.y = b;
return this
},
copy: function(a) {
this.x = a.x;
this.y = a.y;
return this
},
clone: function() {
return new THREE.Vector2(this.x, this.y)
},
add: function(a, b) {
this.x = a.x + b.x;
this.y = a.y + b.y;
return this
},
addSelf: function(a) {
this.x += a.x;
this.y += a.y;
return this
},
sub: function(a, b) {
this.x = a.x - b.x;
this.y = a.y - b.y;
return this
},
subSelf: function(a) {
this.x -= a.x;
this.y -= a.y;
return this
},
multiplyScalar: function(a) {
this.x *= a;
this.y *= a;
return this
},
divideScalar: function(a) {
a ? (this.x /= a, this.y /= a) : this.set(0, 0);
return this
},
negate: function() {
return this.multiplyScalar(-1)
},
dot: function(a) {
return this.x * a.x + this.y * a.y
},
lengthSq: function() {
return this.x * this.x + this.y * this.y
},
length: function() {
return Math.sqrt(this.lengthSq())
},
normalize: function() {
return this.divideScalar(this.length())
},
distanceTo: function(a) {
return Math.sqrt(this.distanceToSquared(a))
},
distanceToSquared: function(a) {
var b = this.x - a.x,
a = this.y - a.y;
return b * b + a * a
},
setLength: function(a) {
return this.normalize().multiplyScalar(a)
},
equals: function(a) {
return a.x === this.x && a.y === this.y
}
};
THREE.Vector3 = function(a, b, c) {
this.x = a || 0;
this.y = b || 0;
this.z = c || 0
};
THREE.Vector3.prototype = {
constructor: THREE.Vector3,
set: function(a, b, c) {
this.x = a;
this.y = b;
this.z = c;
return this
},
setX: function(a) {
this.x = a;
return this
},
setY: function(a) {
this.y = a;
return this
},
setZ: function(a) {
this.z = a;
return this
},
copy: function(a) {
this.x = a.x;
this.y = a.y;
this.z = a.z;
return this
},
clone: function() {
return new THREE.Vector3(this.x, this.y, this.z)
},
add: function(a, b) {
this.x = a.x + b.x;
this.y = a.y + b.y;
this.z = a.z + b.z;
return this
},
addSelf: function(a) {
this.x += a.x;
this.y += a.y;
this.z += a.z;
return this
},
addScalar: function(a) {
this.x += a;
this.y += a;
this.z += a;
return this
},
sub: function(a, b) {
this.x = a.x - b.x;
this.y = a.y - b.y;
this.z = a.z - b.z;
return this
},
subSelf: function(a) {
this.x -= a.x;
this.y -= a.y;
this.z -= a.z;
return this
},
multiply: function(a, b) {
this.x = a.x * b.x;
this.y = a.y * b.y;
this.z = a.z * b.z;
return this
},
multiplySelf: function(a) {
this.x *= a.x;
this.y *= a.y;
this.z *= a.z;
return this
},
multiplyScalar: function(a) {
this.x *= a;
this.y *= a;
this.z *= a;
return this
},
divideSelf: function(a) {
this.x /= a.x;
this.y /= a.y;
this.z /= a.z;
return this
},
divideScalar: function(a) {
a ? (this.x /= a, this.y /= a, this.z /= a) : this.z = this.y = this.x = 0;
return this
},
negate: function() {
return this.multiplyScalar(-1)
},
dot: function(a) {
return this.x * a.x + this.y * a.y + this.z * a.z
},
lengthSq: function() {
return this.x * this.x + this.y * this.y + this.z * this.z
},
length: function() {
return Math.sqrt(this.lengthSq())
},
lengthManhattan: function() {
return this.x + this.y + this.z
},
normalize: function() {
return this.divideScalar(this.length())
},
setLength: function(a) {
return this.normalize().multiplyScalar(a)
},
cross: function(a, b) {
this.x = a.y * b.z - a.z * b.y;
this.y = a.z * b.x - a.x * b.z;
this.z = a.x * b.y - a.y * b.x;
return this
},
crossSelf: function(a) {
var b = this.x,
c = this.y,
d = this.z;
this.x = c * a.z - d * a.y;
this.y = d * a.x - b * a.z;
this.z = b * a.y - c * a.x;
return this
},
distanceTo: function(a) {
return Math.sqrt(this.distanceToSquared(a))
},
distanceToSquared: function(a) {
return (new THREE.Vector3).sub(this, a).lengthSq()
},
setPositionFromMatrix: function(a) {
this.x = a.n14;
this.y = a.n24;
this.z = a.n34
},
setRotationFromMatrix: function(a) {
var b = Math.cos(this.y);
this.y = Math.asin(a.n13);
Math.abs(b) > 1.0E-5 ? (this.x = Math.atan2(-a.n23 / b, a.n33 / b), this.z = Math.atan2(-a.n12 / b, a.n11 / b)) : (this.x = 0, this.z = Math.atan2(a.n21, a.n22))
},
isZero: function() {
return this.lengthSq() < 1.0E-4
}
};
THREE.Vector4 = function(a, b, c, d) {
this.x = a || 0;
this.y = b || 0;
this.z = c || 0;
this.w = d !== void 0 ? d : 1
};
THREE.Vector4.prototype = {
constructor: THREE.Vector4,
set: function(a, b, c, d) {
this.x = a;
this.y = b;
this.z = c;
this.w = d;
return this
},
copy: function(a) {
this.x = a.x;
this.y = a.y;
this.z = a.z;
this.w = a.w !== void 0 ? a.w : 1
},
clone: function() {
return new THREE.Vector4(this.x, this.y, this.z, this.w)
},
add: function(a, b) {
this.x = a.x + b.x;
this.y = a.y + b.y;
this.z = a.z + b.z;
this.w = a.w + b.w;
return this
},
addSelf: function(a) {
this.x += a.x;
this.y += a.y;
this.z += a.z;
this.w += a.w;
return this
},
sub: function(a, b) {
this.x = a.x - b.x;
this.y = a.y - b.y;
this.z = a.z - b.z;
this.w = a.w - b.w;
return this
},
subSelf: function(a) {
this.x -= a.x;
this.y -= a.y;
this.z -= a.z;
this.w -= a.w;
return this
},
multiplyScalar: function(a) {
this.x *= a;
this.y *= a;
this.z *= a;
this.w *= a;
return this
},
divideScalar: function(a) {
a ? (this.x /= a, this.y /= a, this.z /= a, this.w /= a) : (this.z = this.y = this.x = 0, this.w = 1);
return this
},
negate: function() {
return this.multiplyScalar(-1)
},
dot: function(a) {
return this.x * a.x + this.y * a.y + this.z * a.z + this.w * a.w
},
lengthSq: function() {
return this.dot(this)
},
length: function() {
return Math.sqrt(this.lengthSq())
},
normalize: function() {
return this.divideScalar(this.length())
},
setLength: function(a) {
return this.normalize().multiplyScalar(a)
},
lerpSelf: function(a, b) {
this.x += (a.x - this.x) * b;
this.y += (a.y - this.y) * b;
this.z += (a.z - this.z) * b;
this.w += (a.w - this.w) * b;
return this
}
};
THREE.Ray = function(a, b) {
function c(a, b, c) {
i.sub(c, a);
p = i.dot(b);
if (p <= 0) return null;
k = n.add(a, o.copy(b).multiplyScalar(p));
return s = c.distanceTo(k)
}
function d(a, b, c, d) {
i.sub(d, b);
n.sub(c, b);
o.sub(a, b);
K = i.dot(i);
C = i.dot(n);
Q = i.dot(o);
O = n.dot(n);
w = n.dot(o);
F = 1 / (K * O - C * C);
z = (O * Q - C * w) * F;
D = (K * w - C * Q) * F;
return z >= 0 && D >= 0 && z + D < 1
}
this.origin = a || new THREE.Vector3;
this.direction = b || new THREE.Vector3;
this.intersectScene = function(a) {
return this.intersectObjects(a.children)
};
this.intersectObjects = function(a) {
var b, c, d = [];
b = 0;
for (c = a.length; b < c; b++) Array.prototype.push.apply(d, this.intersectObject(a[b]));
d.sort(function(a, b) {
return a.distance - b.distance
});
return d
};
var f = new THREE.Vector3,
e = new THREE.Vector3,
g = new THREE.Vector3,
h = new THREE.Vector3,
a = new THREE.Vector3,
b = new THREE.Vector3,
m = new THREE.Vector3,
l = new THREE.Vector3,
j = new THREE.Vector3;
this.intersectObject = function(k) {
for (var i, o = [], n = 0, W = k.children.length; n < W; n++) Array.prototype.push.apply(o, this.intersectObject(k.children[n]));
if (k instanceof THREE.Particle) {
n = c(this.origin, this.direction, k.matrixWorld.getPosition());
if (n === null || n > k.scale.x) return [];
i = {
distance: n,
point: k.position,
face: null,
object: k
};
o.push(i)
} else if (k instanceof THREE.Mesh) {
n = c(this.origin, this.direction, k.matrixWorld.getPosition());
if (n === null || n > k.geometry.boundingSphere.radius * Math.max(k.scale.x, Math.max(k.scale.y, k.scale.z))) return o;
var p, G = k.geometry,
H = G.vertices,
I;
k.matrixRotationWorld.extractRotation(k.matrixWorld);
n = 0;
for (W = G.faces.length; n < W; n++)
if (i = G.faces[n], a.copy(this.origin), b.copy(this.direction), I = k.matrixWorld, m = I.multiplyVector3(m.copy(i.centroid)).subSelf(a), p = m.dot(b), !(p <= 0) && (f = I.multiplyVector3(f.copy(H[i.a].position)), e = I.multiplyVector3(e.copy(H[i.b].position)), g = I.multiplyVector3(g.copy(H[i.c].position)), i instanceof THREE.Face4 && (h = I.multiplyVector3(h.copy(H[i.d].position))), l = k.matrixRotationWorld.multiplyVector3(l.copy(i.normal)), p = b.dot(l), k.doubleSided || (k.flipSided ? p > 0 : p < 0)))
if (p = l.dot(m.sub(f, a)) / p, j.add(a, b.multiplyScalar(p)), i instanceof THREE.Face3) d(j, f, e, g) && (i = {
distance: a.distanceTo(j),
point: j.clone(),
face: i,
object: k
}, o.push(i));
else if (i instanceof THREE.Face4 && (d(j, f, e, h) || d(j, e, g, h))) i = {
distance: a.distanceTo(j),
point: j.clone(),
face: i,
object: k
}, o.push(i)
}
return o
};
var i = new THREE.Vector3,
n = new THREE.Vector3,
o = new THREE.Vector3,
p, k, s, K, C, Q, O, w, F, z, D
};
THREE.Rectangle = function() {
function a() {
e = d - b;
g = f - c
}
var b, c, d, f, e, g, h = !0;
this.getX = function() {
return b
};
this.getY = function() {
return c
};
this.getWidth = function() {
return e
};
this.getHeight = function() {
return g
};
this.getLeft = function() {
return b
};
this.getTop = function() {
return c
};
this.getRight = function() {
return d
};
this.getBottom = function() {
return f
};
this.set = function(e, g, j, i) {
h = !1;
b = e;
c = g;
d = j;
f = i;
a()
};
this.addPoint = function(e, g) {
h ? (h = !1, b = e, c = g, d = e, f = g) : (b = b < e ? b : e, c = c < g ? c : g, d = d > e ? d : e, f = f > g ? f : g);
a()
};
this.add3Points = function(e, g, j, i, n, o) {
h ? (h = !1, b = e < j ? e < n ? e : n : j < n ? j : n, c = g < i ? g < o ? g : o : i < o ? i : o, d = e > j ? e > n ? e : n : j > n ? j : n, f = g > i ? g > o ? g : o : i > o ? i : o) : (b = e < j ? e < n ? e < b ? e : b : n < b ? n : b : j < n ? j < b ? j : b : n < b ? n : b, c = g < i ? g < o ? g < c ? g : c : o < c ? o : c : i < o ? i < c ? i : c : o < c ? o : c, d = e > j ? e > n ? e > d ? e : d : n > d ? n : d : j > n ? j > d ? j : d : n > d ? n : d, f = g > i ? g > o ? g > f ? g : f : o > f ? o : f : i > o ? i > f ? i : f : o > f ? o : f);
a()
};
this.addRectangle = function(e) {
h ? (h = !1, b = e.getLeft(), c = e.getTop(), d = e.getRight(), f = e.getBottom()) : (b = b < e.getLeft() ? b : e.getLeft(), c = c < e.getTop() ? c : e.getTop(), d = d > e.getRight() ? d : e.getRight(), f = f > e.getBottom() ? f : e.getBottom());
a()
};
this.inflate = function(e) {
b -= e;
c -= e;
d += e;
f += e;
a()
};
this.minSelf = function(e) {
b = b > e.getLeft() ? b : e.getLeft();
c = c > e.getTop() ? c : e.getTop();
d = d < e.getRight() ? d : e.getRight();
f = f < e.getBottom() ? f : e.getBottom();
a()
};
this.intersects = function(a) {
return Math.min(d, a.getRight()) - Math.max(b, a.getLeft()) >= 0 && Math.min(f, a.getBottom()) - Math.max(c, a.getTop()) >= 0
};
this.empty = function() {
h = !0;
f = d = c = b = 0;
a()
};
this.isEmpty = function() {
return h
}
};
THREE.Math = {
clamp: function(a, b, c) {
return a < b ? b : a > c ? c : a
},
clampBottom: function(a, b) {
return a < b ? b : a
},
mapLinear: function(a, b, c, d, f) {
return d + (a - b) * (f - d) / (c - b)
},
random16: function() {
return (65280 * Math.random() + 255 * Math.random()) / 65535
}
};
THREE.Matrix3 = function() {
this.m = []
};
THREE.Matrix3.prototype = {
constructor: THREE.Matrix3,
transpose: function() {
var a, b = this.m;
a = b[1];
b[1] = b[3];
b[3] = a;
a = b[2];
b[2] = b[6];
b[6] = a;
a = b[5];
b[5] = b[7];
b[7] = a;
return this
},
transposeIntoArray: function(a) {
var b = this.m;
a[0] = b[0];
a[1] = b[3];
a[2] = b[6];
a[3] = b[1];
a[4] = b[4];
a[5] = b[7];
a[6] = b[2];
a[7] = b[5];
a[8] = b[8];
return this
}
};
THREE.Matrix4 = function(a, b, c, d, f, e, g, h, m, l, j, i, n, o, p, k) {
this.set(a !== void 0 ? a : 1, b || 0, c || 0, d || 0, f || 0, e !== void 0 ? e : 1, g || 0, h || 0, m || 0, l || 0, j !== void 0 ? j : 1, i || 0, n || 0, o || 0, p || 0, k !== void 0 ? k : 1);
this.flat = Array(16);
this.m33 = new THREE.Matrix3
};
THREE.Matrix4.prototype = {
constructor: THREE.Matrix4,
set: function(a, b, c, d, f, e, g, h, m, l, j, i, n, o, p, k) {
this.n11 = a;
this.n12 = b;
this.n13 = c;
this.n14 = d;
this.n21 = f;
this.n22 = e;
this.n23 = g;
this.n24 = h;
this.n31 = m;
this.n32 = l;
this.n33 = j;
this.n34 = i;
this.n41 = n;
this.n42 = o;
this.n43 = p;
this.n44 = k;
return this
},
identity: function() {
this.set(1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1);
return this
},
copy: function(a) {
this.set(a.n11, a.n12, a.n13, a.n14, a.n21, a.n22, a.n23, a.n24, a.n31, a.n32, a.n33, a.n34, a.n41, a.n42, a.n43, a.n44);
return this
},
lookAt: function(a, b, c) {
var d = THREE.Matrix4.__v1,
f = THREE.Matrix4.__v2,
e = THREE.Matrix4.__v3;
e.sub(a, b).normalize();
if (e.length() === 0) e.z = 1;
d.cross(c, e).normalize();
d.length() === 0 && (e.x += 1.0E-4, d.cross(c, e).normalize());
f.cross(e, d).normalize();
this.n11 = d.x;
this.n12 = f.x;
this.n13 = e.x;
this.n21 = d.y;
this.n22 = f.y;
this.n23 = e.y;
this.n31 = d.z;
this.n32 = f.z;
this.n33 = e.z;
return this
},
multiply: function(a, b) {
var c = a.n11,
d = a.n12,
f = a.n13,
e = a.n14,
g = a.n21,
h = a.n22,
m = a.n23,
l = a.n24,
j = a.n31,
i = a.n32,
n = a.n33,
o = a.n34,
p = a.n41,
k = a.n42,
s = a.n43,
K = a.n44,
C = b.n11,
Q = b.n12,
O = b.n13,
w = b.n14,
F = b.n21,
z = b.n22,
D = b.n23,
u = b.n24,
r = b.n31,
E = b.n32,
N = b.n33,
W = b.n34,
da = b.n41,
G = b.n42,
H = b.n43,
I = b.n44;
this.n11 = c * C + d * F + f * r + e * da;
this.n12 = c * Q + d * z + f * E + e * G;
this.n13 = c * O + d * D + f * N + e * H;
this.n14 = c * w + d * u + f * W + e * I;
this.n21 = g * C + h * F + m * r + l * da;
this.n22 = g * Q + h * z + m * E + l * G;
this.n23 = g * O + h * D + m * N + l * H;
this.n24 = g * w + h * u + m * W + l * I;
this.n31 = j * C + i * F + n * r + o * da;
this.n32 = j * Q + i * z + n * E + o * G;
this.n33 = j * O + i * D + n * N + o * H;
this.n34 = j * w + i * u + n * W + o * I;
this.n41 = p * C + k * F + s * r + K * da;
this.n42 = p * Q + k * z + s * E + K * G;
this.n43 = p * O + k * D + s * N + K * H;
this.n44 = p * w + k * u + s * W + K * I;
return this
},
multiplySelf: function(a) {
return this.multiply(this, a)
},
multiplyToArray: function(a, b, c) {
this.multiply(a, b);
c[0] = this.n11;
c[1] = this.n21;
c[2] = this.n31;
c[3] = this.n41;
c[4] = this.n12;
c[5] = this.n22;
c[6] = this.n32;
c[7] = this.n42;
c[8] = this.n13;
c[9] = this.n23;
c[10] = this.n33;
c[11] = this.n43;
c[12] = this.n14;
c[13] = this.n24;
c[14] = this.n34;
c[15] = this.n44;
return this
},
multiplyScalar: function(a) {
this.n11 *= a;
this.n12 *= a;
this.n13 *= a;
this.n14 *= a;
this.n21 *= a;
this.n22 *= a;
this.n23 *= a;
this.n24 *= a;
this.n31 *= a;
this.n32 *= a;
this.n33 *= a;
this.n34 *= a;
this.n41 *= a;
this.n42 *= a;
this.n43 *= a;
this.n44 *= a;
return this
},
multiplyVector3: function(a) {
var b = a.x,
c = a.y,
d = a.z,
f = 1 / (this.n41 * b + this.n42 * c + this.n43 * d + this.n44);
a.x = (this.n11 * b + this.n12 * c + this.n13 * d + this.n14) * f;
a.y = (this.n21 * b + this.n22 * c + this.n23 * d + this.n24) * f;
a.z = (this.n31 * b + this.n32 * c + this.n33 * d + this.n34) * f;
return a
},
multiplyVector4: function(a) {
var b = a.x,
c = a.y,
d = a.z,
f = a.w;
a.x = this.n11 * b + this.n12 * c + this.n13 * d + this.n14 * f;
a.y = this.n21 * b + this.n22 * c + this.n23 * d + this.n24 * f;
a.z = this.n31 * b + this.n32 * c + this.n33 * d + this.n34 * f;
a.w = this.n41 * b + this.n42 * c + this.n43 * d + this.n44 * f;
return a
},
rotateAxis: function(a) {
var b = a.x,
c = a.y,
d = a.z;
a.x = b * this.n11 + c * this.n12 + d * this.n13;
a.y = b * this.n21 + c * this.n22 + d * this.n23;
a.z = b * this.n31 + c * this.n32 + d * this.n33;
a.normalize();
return a
},
crossVector: function(a) {
var b = new THREE.Vector4;
b.x = this.n11 * a.x + this.n12 * a.y + this.n13 * a.z + this.n14 * a.w;
b.y = this.n21 * a.x + this.n22 * a.y + this.n23 * a.z + this.n24 * a.w;
b.z = this.n31 * a.x + this.n32 * a.y + this.n33 * a.z + this.n34 * a.w;
b.w = a.w ? this.n41 * a.x + this.n42 * a.y + this.n43 * a.z + this.n44 * a.w : 1;
return b
},
determinant: function() {
var a = this.n11,
b = this.n12,
c = this.n13,
d = this.n14,
f = this.n21,
e = this.n22,
g = this.n23,
h = this.n24,
m = this.n31,
l = this.n32,
j = this.n33,
i = this.n34,
n = this.n41,
o = this.n42,
p = this.n43,
k = this.n44;
return d * g * l * n - c * h * l * n - d * e * j * n + b * h * j * n + c * e * i * n - b * g * i * n - d * g * m * o + c * h * m * o + d * f * j * o - a * h * j * o - c * f * i * o + a * g * i * o + d * e * m * p - b * h * m * p - d * f * l * p + a * h * l * p + b * f * i * p - a * e * i * p - c * e * m * k + b * g * m * k + c * f * l * k - a * g * l * k - b * f * j * k + a * e * j * k
},
transpose: function() {
var a;
a = this.n21;
this.n21 = this.n12;
this.n12 = a;
a = this.n31;
this.n31 = this.n13;
this.n13 = a;
a = this.n32;
this.n32 = this.n23;
this.n23 = a;
a = this.n41;
this.n41 = this.n14;
this.n14 = a;
a = this.n42;
this.n42 = this.n24;
this.n24 = a;
a = this.n43;
this.n43 = this.n34;
this.n43 = a;
return this
},
clone: function() {
var a = new THREE.Matrix4;
a.n11 = this.n11;
a.n12 = this.n12;
a.n13 = this.n13;
a.n14 = this.n14;
a.n21 = this.n21;
a.n22 = this.n22;
a.n23 = this.n23;
a.n24 = this.n24;
a.n31 = this.n31;
a.n32 = this.n32;
a.n33 = this.n33;
a.n34 = this.n34;
a.n41 = this.n41;
a.n42 = this.n42;
a.n43 = this.n43;
a.n44 = this.n44;
return a
},
flatten: function() {
this.flat[0] = this.n11;
this.flat[1] = this.n21;
this.flat[2] = this.n31;
this.flat[3] = this.n41;
this.flat[4] = this.n12;
this.flat[5] = this.n22;
this.flat[6] = this.n32;
this.flat[7] = this.n42;
this.flat[8] = this.n13;
this.flat[9] = this.n23;
this.flat[10] = this.n33;
this.flat[11] = this.n43;
this.flat[12] = this.n14;
this.flat[13] = this.n24;
this.flat[14] = this.n34;
this.flat[15] = this.n44;
return this.flat
},
flattenToArray: function(a) {
a[0] = this.n11;
a[1] = this.n21;
a[2] = this.n31;
a[3] = this.n41;
a[4] = this.n12;
a[5] = this.n22;
a[6] = this.n32;
a[7] = this.n42;
a[8] = this.n13;
a[9] = this.n23;
a[10] = this.n33;
a[11] = this.n43;
a[12] = this.n14;
a[13] = this.n24;
a[14] = this.n34;
a[15] = this.n44;
return a
},
flattenToArrayOffset: function(a, b) {
a[b] = this.n11;
a[b + 1] = this.n21;
a[b + 2] = this.n31;
a[b + 3] = this.n41;
a[b + 4] = this.n12;
a[b + 5] = this.n22;
a[b + 6] = this.n32;
a[b + 7] = this.n42;
a[b + 8] = this.n13;
a[b + 9] = this.n23;
a[b + 10] = this.n33;
a[b + 11] = this.n43;
a[b + 12] = this.n14;
a[b + 13] = this.n24;
a[b + 14] = this.n34;
a[b + 15] = this.n44;
return a
},
setTranslation: function(a, b, c) {
this.set(1, 0, 0, a, 0, 1, 0, b, 0, 0, 1, c, 0, 0, 0, 1);
return this
},
setScale: function(a, b, c) {
this.set(a, 0, 0, 0, 0, b, 0, 0, 0, 0, c, 0, 0, 0, 0, 1);
return this
},
setRotationX: function(a) {
var b = Math.cos(a),
a = Math.sin(a);
this.set(1, 0, 0, 0, 0, b, -a, 0, 0, a, b, 0, 0, 0, 0, 1);
return this
},
setRotationY: function(a) {
var b = Math.cos(a),
a = Math.sin(a);
this.set(b, 0, a, 0, 0, 1, 0, 0, -a, 0, b, 0, 0, 0, 0, 1);
return this
},
setRotationZ: function(a) {
var b = Math.cos(a),
a = Math.sin(a);
this.set(b, -a, 0, 0, a, b, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1);
return this
},
setRotationAxis: function(a, b) {
var c = Math.cos(b),
d = Math.sin(b),
f = 1 - c,
e = a.x,
g = a.y,
h = a.z,
m = f * e,
l = f * g;
this.set(m * e + c, m * g - d * h, m * h + d * g, 0, m * g + d * h, l * g + c, l * h - d * e, 0, m * h - d * g, l * h + d * e, f * h * h + c, 0, 0, 0, 0, 1);
return this
},
setPosition: function(a) {
this.n14 = a.x;
this.n24 = a.y;
this.n34 = a.z;
return this
},
getPosition: function() {
return THREE.Matrix4.__v1.set(this.n14, this.n24, this.n34)
},
getColumnX: function() {
return THREE.Matrix4.__v1.set(this.n11, this.n21, this.n31)
},
getColumnY: function() {
return THREE.Matrix4.__v1.set(this.n12, this.n22, this.n32)
},
getColumnZ: function() {
return THREE.Matrix4.__v1.set(this.n13, this.n23, this.n33)
},
getInverse: function(a) {
var b = a.n11,
c = a.n12,
d = a.n13,
f = a.n14,
e = a.n21,
g = a.n22,
h = a.n23,
m = a.n24,
l = a.n31,
j = a.n32,
i = a.n33,
n = a.n34,
o = a.n41,
p = a.n42,
k = a.n43,
s = a.n44;
this.n11 = h * n * p - m * i * p + m * j * k - g * n * k - h * j * s + g * i * s;
this.n12 = f * i * p - d * n * p - f * j * k + c * n * k + d * j * s - c * i * s;
this.n13 = d * m * p - f * h * p + f * g * k - c * m * k - d * g * s + c * h * s;
this.n14 = f * h * j - d * m * j - f * g * i + c * m * i + d * g * n - c * h * n;
this.n21 = m * i * o - h * n * o - m * l * k + e * n * k + h * l * s - e * i * s;
this.n22 = d * n * o - f * i * o + f * l * k - b * n * k - d * l * s + b * i * s;
this.n23 = f * h * o - d * m * o - f * e * k + b * m * k + d * e * s - b * h * s;
this.n24 = d * m * l - f * h * l + f * e * i - b * m * i - d * e * n + b * h * n;
this.n31 = g * n * o - m * j * o + m * l * p - e * n * p - g * l * s + e * j * s;
this.n32 = f * j * o - c * n * o - f * l * p + b * n * p + c * l * s - b * j * s;
this.n33 = d * m * o - f * g * o + f * e * p - b * m * p - c * e * s + b * g * s;
this.n34 = f * g * l - c * m * l - f * e * j + b * m * j + c * e * n - b * g * n;
this.n41 = h * j * o - g * i * o - h * l * p + e * i * p + g * l * k - e * j * k;
this.n42 = c * i * o - d * j * o + d * l * p - b * i * p - c * l * k + b * j * k;
this.n43 = d * g * o - c * h * o - d * e * p + b * h * p + c * e * k - b * g * k;
this.n44 = c * h * l - d * g * l + d * e * j - b * h * j - c * e * i + b * g * i;
this.multiplyScalar(1 / a.determinant());
return this
},
setRotationFromEuler: function(a, b) {
var c = a.x,
d = a.y,
f = a.z,
e = Math.cos(c),
c = Math.sin(c),
g = Math.cos(d),
d = Math.sin(d),
h = Math.cos(f),
f = Math.sin(f);
switch (b) {
case "YXZ":
var m = g * h,
l = g * f,
j = d * h,
i = d * f;
this.n11 = m + i * c;
this.n12 = j * c - l;
this.n13 = e * d;
this.n21 = e * f;
this.n22 = e * h;
this.n23 = -c;
this.n31 = l * c - j;
this.n32 = i + m * c;
this.n33 = e * g;
break;
case "ZXY":
m = g * h;
l = g * f;
j = d * h;
i = d * f;
this.n11 = m - i * c;
this.n12 = -e * f;
this.n13 = j + l * c;
this.n21 = l + j * c;
this.n22 = e * h;
this.n23 = i - m * c;
this.n31 = -e * d;
this.n32 = c;
this.n33 = e * g;
break;
case "ZYX":
m = e * h;
l = e * f;
j = c * h;
i = c * f;
this.n11 = g * h;
this.n12 = j * d - l;
this.n13 = m * d + i;
this.n21 = g * f;
this.n22 = i * d + m;
this.n23 = l * d - j;
this.n31 = -d;
this.n32 = c * g;
this.n33 = e * g;
break;
case "YZX":
m = e * g;
l = e * d;
j = c * g;
i = c * d;
this.n11 = g * h;
this.n12 = i - m * f;
this.n13 = j * f + l;
this.n21 = f;
this.n22 = e * h;
this.n23 = -c * h;
this.n31 = -d * h;
this.n32 = l * f + j;
this.n33 = m - i * f;
break;
case "XZY":
m = e * g;
l = e * d;
j = c * g;
i = c * d;
this.n11 = g * h;
this.n12 = -f;
this.n13 = d * h;
this.n21 = m * f + i;
this.n22 = e * h;
this.n23 = l * f - j;
this.n31 = j * f - l;
this.n32 = c * h;
this.n33 = i * f + m;
break;
default:
m = e * h, l = e * f, j = c * h, i = c * f, this.n11 = g * h, this.n12 = -g * f, this.n13 = d, this.n21 = l + j * d, this.n22 = m - i * d, this.n23 = -c * g, this.n31 = i - m * d, this.n32 = j + l * d, this.n33 = e * g
}
return this
},
setRotationFromQuaternion: function(a) {
var b = a.x,
c = a.y,
d = a.z,
f = a.w,
e = b + b,
g = c + c,
h = d + d,
a = b * e,
m = b * g;
b *= h;
var l = c * g;
c *= h;
d *= h;
e *= f;
g *= f;
f *= h;
this.n11 = 1 - (l + d);
this.n12 = m - f;
this.n13 = b + g;
this.n21 = m + f;
this.n22 = 1 - (a + d);
this.n23 = c - e;
this.n31 = b - g;
this.n32 = c + e;
this.n33 = 1 - (a + l);
return this
},
scale: function(a) {
var b = a.x,
c = a.y,
a = a.z;
this.n11 *= b;
this.n12 *= c;
this.n13 *= a;
this.n21 *= b;
this.n22 *= c;
this.n23 *= a;
this.n31 *= b;
this.n32 *= c;
this.n33 *= a;
this.n41 *= b;
this.n42 *= c;
this.n43 *= a;
return this
},
compose: function(a, b, c) {
var d = THREE.Matrix4.__m1,
f = THREE.Matrix4.__m2;
d.identity();
d.setRotationFromQuaternion(b);
f.setScale(c.x, c.y, c.z);
this.multiply(d, f);
this.n14 = a.x;
this.n24 = a.y;
this.n34 = a.z;
return this
},
decompose: function(a, b, c) {
var d = THREE.Matrix4.__v1,
f = THREE.Matrix4.__v2,
e = THREE.Matrix4.__v3;
d.set(this.n11, this.n21, this.n31);
f.set(this.n12, this.n22, this.n32);
e.set(this.n13, this.n23, this.n33);
a = a instanceof THREE.Vector3 ? a : new THREE.Vector3;
b = b instanceof THREE.Quaternion ? b : new THREE.Quaternion;
c = c instanceof THREE.Vector3 ? c : new THREE.Vector3;
c.x = d.length();
c.y = f.length();
c.z = e.length();
a.x = this.n14;
a.y = this.n24;
a.z = this.n34;
d = THREE.Matrix4.__m1;
d.copy(this);
d.n11 /= c.x;
d.n21 /= c.x;
d.n31 /= c.x;
d.n12 /= c.y;
d.n22 /= c.y;
d.n32 /= c.y;
.........完整代码请登录后点击上方下载按钮下载查看
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