simsite/frontend/node_modules/three-stdlib/renderers/SVGRenderer.cjs

"use strict";
Object.defineProperty(exports, Symbol.toStringTag, { value: "Module" });
const THREE = require("three");
const Projector = require("./Projector.cjs");
class SVGObject extends THREE.Object3D {
  constructor(node) {
    super();
    this.isSVGObject = true;
    this.node = node;
  }
}
class SVGRenderer {
  constructor() {
    let _renderData, _elements, _lights, _svgWidth, _svgHeight, _svgWidthHalf, _svgHeightHalf, _v1, _v2, _v3, _svgNode, _pathCount = 0, _precision = null, _quality = 1, _currentPath, _currentStyle;
    const _this = this, _clipBox = new THREE.Box2(), _elemBox = new THREE.Box2(), _color = new THREE.Color(), _diffuseColor = new THREE.Color(), _ambientLight = new THREE.Color(), _directionalLights = new THREE.Color(), _pointLights = new THREE.Color(), _clearColor = new THREE.Color(), _vector3 = new THREE.Vector3(), _centroid = new THREE.Vector3(), _normal = new THREE.Vector3(), _normalViewMatrix = new THREE.Matrix3(), _viewMatrix = new THREE.Matrix4(), _viewProjectionMatrix = new THREE.Matrix4(), _svgPathPool = [], _projector = new Projector.Projector(), _svg = document.createElementNS("http://www.w3.org/2000/svg", "svg");
    this.domElement = _svg;
    this.autoClear = true;
    this.sortObjects = true;
    this.sortElements = true;
    this.overdraw = 0.5;
    this.info = {
      render: {
        vertices: 0,
        faces: 0
      }
    };
    this.setQuality = function(quality) {
      switch (quality) {
        case "high":
          _quality = 1;
          break;
        case "low":
          _quality = 0;
          break;
      }
    };
    this.setClearColor = function(color) {
      _clearColor.set(color);
    };
    this.setPixelRatio = function() {
    };
    this.setSize = function(width, height) {
      _svgWidth = width;
      _svgHeight = height;
      _svgWidthHalf = _svgWidth / 2;
      _svgHeightHalf = _svgHeight / 2;
      _svg.setAttribute("viewBox", -_svgWidthHalf + " " + -_svgHeightHalf + " " + _svgWidth + " " + _svgHeight);
      _svg.setAttribute("width", _svgWidth);
      _svg.setAttribute("height", _svgHeight);
      _clipBox.min.set(-_svgWidthHalf, -_svgHeightHalf);
      _clipBox.max.set(_svgWidthHalf, _svgHeightHalf);
    };
    this.getSize = function() {
      return {
        width: _svgWidth,
        height: _svgHeight
      };
    };
    this.setPrecision = function(precision) {
      _precision = precision;
    };
    function removeChildNodes() {
      _pathCount = 0;
      while (_svg.childNodes.length > 0) {
        _svg.removeChild(_svg.childNodes[0]);
      }
    }
    function convert(c) {
      return _precision !== null ? c.toFixed(_precision) : c;
    }
    this.clear = function() {
      removeChildNodes();
      _svg.style.backgroundColor = _clearColor.getStyle();
    };
    this.render = function(scene, camera) {
      if (camera instanceof THREE.Camera === false) {
        console.error("THREE.SVGRenderer.render: camera is not an instance of Camera.");
        return;
      }
      const background = scene.background;
      if (background && background.isColor) {
        removeChildNodes();
        _svg.style.backgroundColor = background.getStyle();
      } else if (this.autoClear === true) {
        this.clear();
      }
      _this.info.render.vertices = 0;
      _this.info.render.faces = 0;
      _viewMatrix.copy(camera.matrixWorldInverse);
      _viewProjectionMatrix.multiplyMatrices(camera.projectionMatrix, _viewMatrix);
      _renderData = _projector.projectScene(scene, camera, this.sortObjects, this.sortElements);
      _elements = _renderData.elements;
      _lights = _renderData.lights;
      _normalViewMatrix.getNormalMatrix(camera.matrixWorldInverse);
      calculateLights(_lights);
      _currentPath = "";
      _currentStyle = "";
      for (let e = 0, el = _elements.length; e < el; e++) {
        const element = _elements[e];
        const material = element.material;
        if (material === void 0 || material.opacity === 0)
          continue;
        _elemBox.makeEmpty();
        if (element instanceof Projector.RenderableSprite) {
          _v1 = element;
          _v1.x *= _svgWidthHalf;
          _v1.y *= -_svgHeightHalf;
          renderSprite(_v1, element, material);
        } else if (element instanceof Projector.RenderableLine) {
          _v1 = element.v1;
          _v2 = element.v2;
          _v1.positionScreen.x *= _svgWidthHalf;
          _v1.positionScreen.y *= -_svgHeightHalf;
          _v2.positionScreen.x *= _svgWidthHalf;
          _v2.positionScreen.y *= -_svgHeightHalf;
          _elemBox.setFromPoints([_v1.positionScreen, _v2.positionScreen]);
          if (_clipBox.intersectsBox(_elemBox) === true) {
            renderLine(_v1, _v2, material);
          }
        } else if (element instanceof Projector.RenderableFace) {
          _v1 = element.v1;
          _v2 = element.v2;
          _v3 = element.v3;
          if (_v1.positionScreen.z < -1 || _v1.positionScreen.z > 1)
            continue;
          if (_v2.positionScreen.z < -1 || _v2.positionScreen.z > 1)
            continue;
          if (_v3.positionScreen.z < -1 || _v3.positionScreen.z > 1)
            continue;
          _v1.positionScreen.x *= _svgWidthHalf;
          _v1.positionScreen.y *= -_svgHeightHalf;
          _v2.positionScreen.x *= _svgWidthHalf;
          _v2.positionScreen.y *= -_svgHeightHalf;
          _v3.positionScreen.x *= _svgWidthHalf;
          _v3.positionScreen.y *= -_svgHeightHalf;
          if (this.overdraw > 0) {
            expand(_v1.positionScreen, _v2.positionScreen, this.overdraw);
            expand(_v2.positionScreen, _v3.positionScreen, this.overdraw);
            expand(_v3.positionScreen, _v1.positionScreen, this.overdraw);
          }
          _elemBox.setFromPoints([_v1.positionScreen, _v2.positionScreen, _v3.positionScreen]);
          if (_clipBox.intersectsBox(_elemBox) === true) {
            renderFace3(_v1, _v2, _v3, element, material);
          }
        }
      }
      flushPath();
      scene.traverseVisible(function(object) {
        if (object.isSVGObject) {
          _vector3.setFromMatrixPosition(object.matrixWorld);
          _vector3.applyMatrix4(_viewProjectionMatrix);
          if (_vector3.z < -1 || _vector3.z > 1)
            return;
          const x = _vector3.x * _svgWidthHalf;
          const y = -_vector3.y * _svgHeightHalf;
          const node = object.node;
          node.setAttribute("transform", "translate(" + x + "," + y + ")");
          _svg.appendChild(node);
        }
      });
    };
    function calculateLights(lights) {
      _ambientLight.setRGB(0, 0, 0);
      _directionalLights.setRGB(0, 0, 0);
      _pointLights.setRGB(0, 0, 0);
      for (let l = 0, ll = lights.length; l < ll; l++) {
        const light = lights[l];
        const lightColor = light.color;
        if (light.isAmbientLight) {
          _ambientLight.r += lightColor.r;
          _ambientLight.g += lightColor.g;
          _ambientLight.b += lightColor.b;
        } else if (light.isDirectionalLight) {
          _directionalLights.r += lightColor.r;
          _directionalLights.g += lightColor.g;
          _directionalLights.b += lightColor.b;
        } else if (light.isPointLight) {
          _pointLights.r += lightColor.r;
          _pointLights.g += lightColor.g;
          _pointLights.b += lightColor.b;
        }
      }
    }
    function calculateLight(lights, position, normal, color) {
      for (let l = 0, ll = lights.length; l < ll; l++) {
        const light = lights[l];
        const lightColor = light.color;
        if (light.isDirectionalLight) {
          const lightPosition = _vector3.setFromMatrixPosition(light.matrixWorld).normalize();
          let amount = normal.dot(lightPosition);
          if (amount <= 0)
            continue;
          amount *= light.intensity;
          color.r += lightColor.r * amount;
          color.g += lightColor.g * amount;
          color.b += lightColor.b * amount;
        } else if (light.isPointLight) {
          const lightPosition = _vector3.setFromMatrixPosition(light.matrixWorld);
          let amount = normal.dot(_vector3.subVectors(lightPosition, position).normalize());
          if (amount <= 0)
            continue;
          amount *= light.distance == 0 ? 1 : 1 - Math.min(position.distanceTo(lightPosition) / light.distance, 1);
          if (amount == 0)
            continue;
          amount *= light.intensity;
          color.r += lightColor.r * amount;
          color.g += lightColor.g * amount;
          color.b += lightColor.b * amount;
        }
      }
    }
    function renderSprite(v1, element, material) {
      let scaleX = element.scale.x * _svgWidthHalf;
      let scaleY = element.scale.y * _svgHeightHalf;
      if (material.isPointsMaterial) {
        scaleX *= material.size;
        scaleY *= material.size;
      }
      const path = "M" + convert(v1.x - scaleX * 0.5) + "," + convert(v1.y - scaleY * 0.5) + "h" + convert(scaleX) + "v" + convert(scaleY) + "h" + convert(-scaleX) + "z";
      let style = "";
      if (material.isSpriteMaterial || material.isPointsMaterial) {
        style = "fill:" + material.color.getStyle() + ";fill-opacity:" + material.opacity;
      }
      addPath(style, path);
    }
    function renderLine(v1, v2, material) {
      const path = "M" + convert(v1.positionScreen.x) + "," + convert(v1.positionScreen.y) + "L" + convert(v2.positionScreen.x) + "," + convert(v2.positionScreen.y);
      if (material.isLineBasicMaterial) {
        let style = "fill:none;stroke:" + material.color.getStyle() + ";stroke-opacity:" + material.opacity + ";stroke-width:" + material.linewidth + ";stroke-linecap:" + material.linecap;
        if (material.isLineDashedMaterial) {
          style = style + ";stroke-dasharray:" + material.dashSize + "," + material.gapSize;
        }
        addPath(style, path);
      }
    }
    function renderFace3(v1, v2, v3, element, material) {
      _this.info.render.vertices += 3;
      _this.info.render.faces++;
      const path = "M" + convert(v1.positionScreen.x) + "," + convert(v1.positionScreen.y) + "L" + convert(v2.positionScreen.x) + "," + convert(v2.positionScreen.y) + "L" + convert(v3.positionScreen.x) + "," + convert(v3.positionScreen.y) + "z";
      let style = "";
      if (material.isMeshBasicMaterial) {
        _color.copy(material.color);
        if (material.vertexColors) {
          _color.multiply(element.color);
        }
      } else if (material.isMeshLambertMaterial || material.isMeshPhongMaterial || material.isMeshStandardMaterial) {
        _diffuseColor.copy(material.color);
        if (material.vertexColors) {
          _diffuseColor.multiply(element.color);
        }
        _color.copy(_ambientLight);
        _centroid.copy(v1.positionWorld).add(v2.positionWorld).add(v3.positionWorld).divideScalar(3);
        calculateLight(_lights, _centroid, element.normalModel, _color);
        _color.multiply(_diffuseColor).add(material.emissive);
      } else if (material.isMeshNormalMaterial) {
        _normal.copy(element.normalModel).applyMatrix3(_normalViewMatrix).normalize();
        _color.setRGB(_normal.x, _normal.y, _normal.z).multiplyScalar(0.5).addScalar(0.5);
      }
      if (material.wireframe) {
        style = "fill:none;stroke:" + _color.getStyle() + ";stroke-opacity:" + material.opacity + ";stroke-width:" + material.wireframeLinewidth + ";stroke-linecap:" + material.wireframeLinecap + ";stroke-linejoin:" + material.wireframeLinejoin;
      } else {
        style = "fill:" + _color.getStyle() + ";fill-opacity:" + material.opacity;
      }
      addPath(style, path);
    }
    function expand(v1, v2, pixels) {
      let x = v2.x - v1.x, y = v2.y - v1.y;
      const det = x * x + y * y;
      if (det === 0)
        return;
      const idet = pixels / Math.sqrt(det);
      x *= idet;
      y *= idet;
      v2.x += x;
      v2.y += y;
      v1.x -= x;
      v1.y -= y;
    }
    function addPath(style, path) {
      if (_currentStyle === style) {
        _currentPath += path;
      } else {
        flushPath();
        _currentStyle = style;
        _currentPath = path;
      }
    }
    function flushPath() {
      if (_currentPath) {
        _svgNode = getPathNode(_pathCount++);
        _svgNode.setAttribute("d", _currentPath);
        _svgNode.setAttribute("style", _currentStyle);
        _svg.appendChild(_svgNode);
      }
      _currentPath = "";
      _currentStyle = "";
    }
    function getPathNode(id) {
      if (_svgPathPool[id] == null) {
        _svgPathPool[id] = document.createElementNS("http://www.w3.org/2000/svg", "path");
        if (_quality == 0) {
          _svgPathPool[id].setAttribute("shape-rendering", "crispEdges");
        }
        return _svgPathPool[id];
      }
      return _svgPathPool[id];
    }
  }
}
exports.SVGObject = SVGObject;
exports.SVGRenderer = SVGRenderer;
//# sourceMappingURL=SVGRenderer.cjs.map