标签：function Viewshed THREE 学习 ._ new prototype
function() {
class e extends r.ObjectGroup {
constructor(e) {
super(r.ObjectGroupType.VIEWSHED, {
priority: 20
}),
e = e || {},
this._position = new THREE.Vector3(0,0,0),
this._direction = new THREE.Vector3(0,0,-1),
this._visibleAreaColor = new THREE.Vector4(0,255,0,.8),
this._hiddenAreaColor = new THREE.Vector4(255,0,0,.8),
this._distance = null != e.distance ? e.distance : 200,
this._horizontalFov = null != e.horizontalFov ? e.horizontalFov : 2 * Math.PI / 3,
this._verticalFov = null != e.verticalFov ? e.verticalFov : Math.PI / 2,
this._translucenceAvailable = !1 !== e.translucenceAvailable,
this._frustumVisible = e.frustumVisible,
this._effectVisible = !0,
this.visible = this._frustumVisible,
this._up = new THREE.Vector3(0,1,0),
this._right = new THREE.Vector3(1,0,0),
this._unitAngle = 5,
this._cornerLeftTop = new THREE.Vector3,
this._cornerRightTop = new THREE.Vector3,
this._cornerLeftBottom = new THREE.Vector3,
this._cornerRightBottom = new THREE.Vector3,
this._viewer = null,
this._lineGeometry = new THREE.BufferGeometry,
this._lineMaterial = new THREE.LineBasicMaterial({
color: 16777215
}),
this._lineMesh = new THREE.LineSegments(this._lineGeometry,this._lineMaterial),
this._sphereGeometry = new THREE.BufferGeometry,
this._sphereMaterial = new THREE.MeshBasicMaterial({
color: 16777215,
side: THREE.DoubleSide
}),
this._sphereMesh = new THREE.Mesh(this._sphereGeometry,this._sphereMaterial),
this._sphereMesh.visible = !1,
this.camera = new THREE.PerspectiveCamera,
this.viewMatrix = new THREE.Matrix4,
this.viewProjMatrix = new THREE.Matrix4,
this.depthRenderTarget = new THREE.WebGLRenderTarget(1024,1024,{
minFilter: THREE.LinearFilter,
magFilter: THREE.LinearFilter
});
var t = new THREE.Vector3;
this.updateViewMatrix = function() {
t.copy(this._position),
t.add(this._direction),
this.camera.position.copy(this._position),
this.camera.lookAt(t),
this.camera.updateMatrixWorld(!0),
this.viewMatrix.copy(this.camera.matrixWorld).invert()
}
;
var i = new THREE.Vector3;
new THREE.Vector3;
this.updateProjMatrix = function() {
var e = Math.cos(this._horizontalFov / 2)
, t = Math.tan(this._verticalFov / 2)
, r = Math.atan(e * t)
, a = this._distance * Math.cos(r) * Math.cos(this._horizontalFov / 2);
i.copy(this._position),
i.addScaledVector(this._direction, a);
var n = a * Math.tan(this._horizontalFov / 2)
, s = a * Math.tan(this._verticalFov / 2);
this._cornerLeftTop.copy(i),
this._cornerLeftTop.addScaledVector(this._right, -n),
this._cornerLeftTop.addScaledVector(this._up, s),
this._cornerRightTop.copy(i),
this._cornerRightTop.addScaledVector(this._right, n),
this._cornerRightTop.addScaledVector(this._up, s),
this._cornerLeftBottom.copy(i),
this._cornerLeftBottom.addScaledVector(this._right, -n),
this._cornerLeftBottom.addScaledVector(this._up, -s),
this._cornerRightBottom.copy(i),
this._cornerRightBottom.addScaledVector(this._right, n),
this._cornerRightBottom.addScaledVector(this._up, -s);
var o = Math.tan(.5 * this._horizontalFov) / Math.tan(.5 * this._verticalFov);
this.camera.fov = THREE.Math.radToDeg(this._verticalFov),
this.camera.aspect = o,
this.camera.near = .01,
this.camera.far = Math.max(this._distance),
this.camera.updateProjectionMatrix()
}
,
this.getViewProjMatrix = function() {
return this.viewProjMatrix.multiplyMatrices(this.camera.projectionMatrix, this.viewMatrix),
this.viewProjMatrix
}
,
this.createSideLines = function() {
for (var e = [], t = [this._cornerLeftBottom, this._cornerRightBottom, this._cornerRightTop, this._cornerLeftTop], i = 0; i < t.length; i++)
e.push(this._position.x, this._position.y, this._position.z),
e.push(t[i].x, t[i].y, t[i].z);
return e
}
;
var a = new THREE.Vector3
, n = new THREE.Vector3
, s = new THREE.Vector3
, o = new THREE.Vector3
, l = []
, d = this;
this.createTopSideLines = function() {
var e = [];
function t(e, t, i) {
var r = [];
if (i) {
for (var a = e; a < t; )
if (r.push(a),
(a += d._unitAngle) >= t) {
r.push(t);
break
}
} else
for (a = t; a > e; )
if (r.push(a),
(a -= d._unitAngle) <= e) {
r.push(e);
break
}
return r
}
a.copy(this._cornerLeftTop),
a.sub(this._position),
n.copy(this._cornerRightTop),
n.sub(this._position),
s.copy(this._cornerRightBottom),
s.sub(this._position);
var i, r, h = THREE.Math.radToDeg(n.angleTo(s)), c = THREE.Math.radToDeg(a.angleTo(n)), u = [{
axis: "up",
outerAngle: -this._horizontalFov / 2,
innerAngles: t(-h / 2, h / 2, !0)
}, {
axis: "right",
outerAngle: this._verticalFov / 2,
innerAngles: t(-c / 2, c / 2, !0)
}, {
axis: "up",
outerAngle: this._horizontalFov / 2,
innerAngles: t(-h / 2, h / 2, !1)
}, {
axis: "right",
outerAngle: -this._verticalFov / 2,
innerAngles: t(-c / 2, c / 2, !1)
}];
l = [];
for (var p = 0; p < u.length; p++) {
"up" == u[p].axis ? (i = this._up,
r = this._right) : "right" == u[p].axis && (i = this._right,
r = this._up);
for (var m = [], f = 0; f < u[p].innerAngles.length; f++) {
o.copy(this._direction),
o.applyAxisAngle(r, THREE.Math.degToRad(u[p].innerAngles[f])),
o.applyAxisAngle(i, u[p].outerAngle),
o.multiplyScalar(this._distance);
var g = new THREE.Vector3;
g.copy(this._position),
g.add(o),
m.push(g),
l.push(g)
}
for (f = 0; f < m.length - 1; f++)
e.push(m[f].x, m[f].y, m[f].z),
e.push(m[f + 1].x, m[f + 1].y, m[f + 1].z)
}
return e
}
;
var h = new THREE.Vector3
, c = new THREE.Vector3
, u = new THREE.Vector3
, p = new THREE.Vector3
, m = new THREE.Quaternion;
this.createTopLines = function() {
var e = [];
h.copy(this._position),
h.addScaledVector(this._direction, this._distance),
c.copy(h),
c.sub(this._position),
c.normalize();
for (var t = [], i = 0, r = 0; r < l.length; r++) {
p.copy(l[r]),
p.sub(this._position),
p.normalize(),
u.copy(c),
u.cross(p),
u.normalize();
for (var a = THREE.Math.radToDeg(c.angleTo(p)), n = [], s = 0; ; s += this._unitAngle) {
s >= a && (s = a),
m.setFromAxisAngle(u, THREE.Math.degToRad(s)),
o.copy(c),
o.applyQuaternion(m);
var d = new THREE.Vector3;
if (d.copy(this._position),
d.addScaledVector(o, this._distance),
n.push(d),
s >= a)
break
}
i = Math.max(i, n.length),
t.push(n)
}
for (r = 0; r < t.length; r++)
for (s = 0; s < t[r].length - 1; s++)
e.push(t[r][s].x, t[r][s].y, t[r][s].z),
e.push(t[r][s + 1].x, t[r][s + 1].y, t[r][s + 1].z);
for (r = 1; r < i; r++)
for (s = 0; s < t.length - 1; s++)
t[s][r] && t[s + 1][r] && (e.push(t[s][r].x, t[s][r].y, t[s][r].z),
e.push(t[s + 1][r].x, t[s + 1][r].y, t[s + 1][r].z));
return e
}
,
this.updateMeshGeometry = function() {
this.updateViewMatrix(),
this.updateProjMatrix(),
this._sphereGeometry = new THREE.SphereGeometry(this._distance,40,40),
this._sphereGeometry.translate(this._position.x, this._position.y, this._position.z);
var e = [];
return e = (e = (e = e.concat(this.createSideLines())).concat(this.createTopSideLines())).concat(this.createTopLines()),
this._lineGeometry.deleteAttribute("position"),
this._lineGeometry.setAttribute("position", new THREE.BufferAttribute(new Float32Array(e),3)),
this._lineGeometry
}
,
this.initPrimitive = function() {
this.updateMeshGeometry(),
this._lineMesh.geometry = this._lineGeometry,
this.add(this._lineMesh),
this._sphereMesh.geometry = this._sphereGeometry,
this.add(this._sphereMesh)
}
,
this.updatePrimitive = function() {
this.updateMeshGeometry(),
this._lineMesh.geometry = this._lineGeometry,
this._sphereMesh.geometry = this._sphereGeometry
}
,
r.Viewshed.prototype.getId = function() {
return this.uuid
}
;
var f = {
x: 0,
y: 0,
z: 0
};
r.Viewshed.prototype.getPositon = function() {
return f.x = this._position.x,
f.y = this._position.y,
f.z = this._position.z,
f
}
;
var g = new THREE.Vector3;
r.Viewshed.prototype.setPosition = function(e) {
g.x = e.x,
g.y = e.y,
g.z = e.z,
this._position != g && (this._position.copy(g),
this.updatePrimitive())
}
;
var v = {
x: 0,
y: 0,
z: 0
};
r.Viewshed.prototype.getDirection = function() {
return v.x = this._direction.x,
v.y = this._direction.y,
v.z = this._direction.z,
v
}
;
var y = new THREE.Vector3(0,1,0)
, M = new THREE.Vector3;
r.Viewshed.prototype.setDirection = function(e) {
M.x = e.x,
M.y = e.y,
M.z = e.z,
M.normalize(),
this._direction != M && (0 !== M.lengthSq() ? (this._direction.copy(M),
this._right.crossVectors(y, M),
0 === this._right.lengthSq() && (1 === Math.abs(y.z) ? M.x += 1e-4 : M.z += 1e-4,
M.normalize(),
this._right.crossVectors(y, M)),
this._right.normalize(),
this._up.crossVectors(M, this._right),
this.updatePrimitive()) : r.Logger.warn("WARNING: Invalid direction when CLOUD.Viewshed.prototype.setDirection()"))
}
;
var E = {
x: 0,
y: 0,
z: 0,
w: 0
};
r.Viewshed.prototype.getVisibleAreaColor = function() {
return E.x = this._visibleAreaColor.x,
E.y = this._visibleAreaColor.y,
E.z = this._visibleAreaColor.z,
E.w = this._visibleAreaColor.w,
E
}
;
var I = new THREE.Vector4;
r.Viewshed.prototype.setVisibleAreaColor = function(e) {
I.x = e.red || e.x ? e.red || e.x : 0,
I.y = e.green || e.y ? e.green || e.y : 0,
I.z = e.blue || e.z ? e.blue || e.z : 0,
I.w = e.alpha || e.w ? e.alpha || e.w : 0,
this._visibleAreaColor != I && (this._visibleAreaColor.copy(I),
this.updatePrimitive())
}
;
var b = {
x: 0,
y: 0,
z: 0,
w: 0
};
r.Viewshed.prototype.getHiddenAreaColor = function() {
return b.x = this._hiddenAreaColor.x,
b.y = this._hiddenAreaColor.y,
b.z = this._hiddenAreaColor.z,
b.w = this._hiddenAreaColor.w,
b
}
;
var x = new THREE.Vector4;
r.Viewshed.prototype.setHiddenAreaColor = function(e) {
x.x = e.red || e.x ? e.red || e.x : 0,
x.y = e.green || e.y ? e.green || e.y : 0,
x.z = e.blue || e.z ? e.blue || e.z : 0,
x.w = e.alpha || e.w ? e.alpha || e.w : 0,
this._hiddenAreaColor != x && (this._hiddenAreaColor.copy(x),
this.updatePrimitive())
}
,
r.Viewshed.prototype.getDistance = function() {
return this._distance
}
,
r.Viewshed.prototype.setDistance = function(e) {
this._distance != e && (this._distance = e,
this.updatePrimitive())
}
,
r.Viewshed.prototype.getHorizontalFov = function() {
return this._horizontalFov
}
,
r.Viewshed.prototype.setHorizontalFov = function(e) {
this._horizontalFov != e && (this._horizontalFov = e,
this.updatePrimitive())
}
,
r.Viewshed.prototype.getVerticalFov = function() {
return this._verticalFov
}
,
r.Viewshed.prototype.setVerticalFov = function(e) {
this._verticalFov != e && (this._verticalFov = e,
this.updatePrimitive())
}
,
r.Viewshed.prototype.setTranslucenceAvailable = e=>{
this._translucenceAvailable = e
}
,
r.Viewshed.prototype.getTranslucenceAvailable = ()=>this._translucenceAvailable,
r.Viewshed.prototype.show = function() {
this._effectVisible = !0,
this._frustumVisible && (this.visible = !0),
this._viewer && this._viewer.viewshedManager.update()
}
,
r.Viewshed.prototype.hide = function() {
this._effectVisible = !1,
this.visible = !1,
this._viewer && this._viewer.viewshedManager.update()
}
,
r.Viewshed.prototype.setFrustumVisible = function(e) {
this._frustumVisible = e,
this.visible = e,
this._viewer && this._viewer.viewshedManager.update()
}
,
r.Viewshed.prototype.isFrustumVisible = function() {
return this._frustumVisible
}
,
r.Viewshed.prototype.isEffectVisible = function() {
return !0 === this._effectVisible
}
,
this.setPosition(null != e.position ? e.position : this._position),
this.setDirection(null != e.direction ? e.direction : this._direction),
this.setVisibleAreaColor(null != e.visibleAreaColor ? e.visibleAreaColor : this._visibleAreaColor),
this.setHiddenAreaColor(null != e.hiddenAreaColor ? e.hiddenAreaColor : this._hiddenAreaColor),
this.initPrimitive()
}
}
r.Viewshed = e
}()
#####################
标签：function,Viewshed,THREE,学习,._,new,prototype 来源： https://www.cnblogs.com/herd/p/16321801.html
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