初遇Citymaker (六)

这次我们来说下要素构建

• 要素构建

```javasctipt
import { cw5 } from "../index.js";

export const geometryCreator = {};

//原生类型值反映射枚举; type, 代表高程

let innerType = {
0: "unknown",
1: "point",
2: "modelPoint",
4: "POI",
6: "circularArc",
10: "line",
11: "circle",
30: "polyline",
31: "ring",
32: "compoundLine",
50: "polygon",
51: "triMesh",
70: "collection",
71: "multiPoint",
72: "multiPolyline",
73: "multiPolygon",
74: "multiTrimesh",
77: "closedTriMesh",
100: "pointCloud"
};

/**

• 创建点要素

• xyz 坐标

• m 测量值

• id ID

• */
  geometryCreator.createPoint = function(x, y, z, m = 0, id = 0) {
  var point = cw5.__g.geometryFactory.createPoint(cw5.innerConfig.gviVertexAttribute.gviVertexAttributeZ);

   

  if (x != null && y != null && z != null) {
  point.setCoords(x, y, z, m, id);
  }

   

  if (point != null) {
  let geometry =geometryCreator.createGeometry(point)
  return geometry;
  }
  }

/**

• 创建线要素

• paths Number[][]

• */
  geometryCreator.createPolyline = function(paths) {
  let latitude = null;
  let longitude = null;
  let height = null;
  let position = cw5.__g.new_Vector3;
  let pathpoint = cw5.__g.geometryFactory.createPoint(cw5.innerConfig.gviVertexAttribute.gviVertexAttributeZ);
  let line = cw5.__g.geometryFactory.createGeometry(cw5.innerConfig.gviGeometryType.gviGeometryPolyline, cw5.innerConfig.gviVertexAttribute.gviVertexAttributeZ);
  //向线路中添加点
  if (paths != null) {
  for (let i = 0; i < paths.length; i++) {
  latitude = paths[i][0];
  longitude = paths[i][1];
  height = paths[i][2];

   

  position.set(latitude, longitude, height);
  pathpoint.position = position;
  line.appendPoint(pathpoint);
  }
  }
  if (line != null) {
  let geometry =geometryCreator.createGeometry(line)
  return geometry;
  }
  };

/**

• 创建POI要素

• xyz 坐标

• m 测量值

• id ID

• */
  geometryCreator.createPOI = function(x, y, z, m = 0, id = 0) {

   

  var point = cw5.__g.geometryFactory.createGeometry(cw5.innerConfig.gviGeometryType.gviGeometryPOI, cw5.innerConfig.gviVertexAttribute.gviVertexAttributeZ);//初始化矢量点对象
  point.setCoords(x, y, z, m, id);

   

  if (point != null) {
  let geometry =geometryCreator.createGeometry(point)
  return geometry;
  }
  };

/**

• 创建多边形要素

• paths Number[][]

• */
  geometryCreator.createPolygon = function(paths) {
  let polygon = cw5.__g.geometryFactory.createGeometry(cw5.innerConfig.gviGeometryType.gviGeometryPolygon, cw5.innerConfig.gviVertexAttribute.gviVertexAttributeZM);
  if (polygon == null) {
  return;
  }

   

  if (paths != null) {
  var exteriorRing = polygon.exteriorRing;

   

  let latitude = null;
  let longitude = null;
  let height = null;
  let position = cw5.__g.new_Vector3;
  let pathpoint = cw5.__g.geometryFactory.createPoint(cw5.innerConfig.gviVertexAttribute.gviVertexAttributeZ);

   

  //向边界中添加点
  for (let i = 0; i < paths.length; i++) {
  latitude = paths[i][0];
  longitude = paths[i][1];
  height = paths[i][2];
  position.set(latitude, longitude, height);
  pathpoint.position = position;
  exteriorRing.appendPoint(pathpoint);
  }
  // exteriorRing.reverseOrientation()
  }

   

  let geometry =geometryCreator.createGeometry(polygon)
  return geometry;
  };

/**

• 创建点模型
• modelName 模型路径
• xyz 坐标
• m 测量值
• id ID
• */
  geometryCreator.createModelPoint = function(modelName,x, y, z, m = 0, id = 0) {
  var modelPoint= cw5.__g.geometryFactory.createGeometry(cw5.innerConfig.gviGeometryType.gviGeometryModelPoint, cw5.innerConfig.gviVertexAttribute.gviVertexAttributeZ);//初始化矢量点对象
  modelPoint.modelName = modelName;
  modelPoint.setCoords(x, y, z, m, id);
  if (modelPoint != null) {
  let geometry =geometryCreator.createGeometry(modelPoint)
  return geometry;
  }
  };

/**

• 创建geometry 从原生对象

• object citymaker原生geometry

• */
  geometryCreator.createGeometry = function(object) {
  let type =innerType[object.geometryType] ;

   

  let geometry={

 更多参考 https://xiaozhuanlan.com/topic/1652098437