front_end/libs/Layer/Layer.js

//CLASS:图层类
function Layer(width, height) {
    var size = new CanvasSketch.Size(parseInt(width), parseInt(height));
    this.size = size;
    this.div = div;
    this.parameter = new Parameter();
    this.scale = new Scale(this);
    this.currentState = new CurrentState();
    this.previousState = new PreviousState();
    this.calculateLine = new CalculateLine(this);
    this.calculateElement = new CalculateElement(this);
    this.build = new Build(this);
    this.select = new Select(this);
    this.data2d = new data2d();
    this.move = new Move(this);
    this.pan = new Pan(this);
    this.managerSymbol2D = new ManagerSymbol2D();

    this.selectFloor = 1;
    this.layer3D = new Layer3D(this);

    //this.addSymbol2D=new AddSymbol2D(this);

    //this.tempSymbol=new TempSymbol(this);
    this.variable = new Variable();

    this.menu = new Menu(this);
    this.maxBounds = new CanvasSketch.Bounds(-size.w / 2, -size.h / 2, size.w / 2, size.h / 2);
    this.bounds = new CanvasSketch.Bounds(-size.w / 2, -size.h / 2, size.w / 2, size.h / 2);
    this.center = this.bounds.getCenter();
    this.control = new Control();

    //墙的厚度
    this.thickness = null;

    this.zoom = 100;
    this.getRes();
    this.vectors = {};
    //加入矢量图形的总个数。
    this.vectorsCount = 0;
    //创建一个渲染器。
    this.renderer = new Canvas(this);

};

//这个res代表当前zoom下每像素代表的单位长度。 
//比如当前缩放比率为 200% 则通过计算得到 res为0.5，说明当前zoom下每个像素只表示0.5个单位长度。
Layer.prototype.getRes = function () {
    this.res = 1 / (this.zoom / 100);
    return this.res;
};

Layer.prototype.getResFromZoom = function (zoom) {
    return res = 1 / (zoom / 100);
};

Layer.prototype.addBackGround = function () {
    this.renderer.backgroundcontext.clearRect(0, 0, this.layer.size.w, this.layer.size.h);
    this.renderer.addGrid();
    this.renderer.addMeter();
};

Layer.prototype.addVectors = function (vectors) {
    this.renderer.lock = true;
    for (var i = 0, len = vectors.length; i < len; i++) {
        if (i == len - 1) {
            this.renderer.lock = false;
        }
        this.vectors[vectors[i].id] = vectors[i];
        this.drawVector(vectors[i]);
    }
    this.vectorsCount += vectors.length;
};

Layer.prototype.deleteVector = function (vectorId) {
    if (vectorId == null || this.vectors[vectorId] == null) {
        return;
    }
    var geometryid = this.vectors[vectorId].geometry.id;
    delete this.vectors[vectorId];
    delete this.renderer.geometrys[geometryid];
    --this.vectorsCount;
};

Layer.prototype.deleteSymbol = function (vectorId, wallid) {
    if (vectorId == null || this.vectors[vectorId] == null) {
        return;
    }
    var geometryid = this.vectors[vectorId].geometry.id;
    delete this.vectors[vectorId];
    delete this.renderer.geometrys[geometryid];
    --this.vectorsCount;

    if (wallid != null && wallid != "undefined") {
        delete layer.vectors[wallid].symbol2Ds[geometryid];
        --layer.vectors[wallid].symbol2dsCount;
    }
};

Layer.prototype.deleteOnlySymbol = function (wallid, geometryid) {
    if (wallid != null && wallid != "undefined") {
        delete layer.vectors[wallid].symbol2Ds[geometryid];
        --layer.vectors[wallid].symbol2dsCount;
    }
};

Layer.prototype.drawSingleVector = function (vector) {
    var style;
    if (!vector.style) {
        style = new CanvasSketch.defaultStyle();
    } else {
        style = vector.style;
    }
    this.vectors[vector.id] = vector;
    this.renderer.drawSingleGeometry(vector.geometry, style);
    ++this.vectorsCount;
};

Layer.prototype.drawVector = function (vector) {
    var style;
    if (!vector.style) {
        style = new CanvasSketch.defaultStyle();
    } else {
        style = vector.style;
    }
    this.renderer.drawGeometry(vector.geometry, style, vector.geometry.contextIndex);
};

Layer.prototype.zoomscale = function () {
    var zoom = 1 / this.res;
    var t = this.renderer.backgroundcanvas;
    t.scale(zoom, zoom);
};

//保证背景Grid只画当前屏幕显示的部分
Layer.prototype.moveTo = function (zoom, center) {

    this.zoom = zoom;
    this.center = center;
    var res = this.getRes();
    var width = this.size.w * res;
    var height = this.size.h * res;
    var left = center.x - width / 2;
    var bottom = center.y - height / 2;
    var right = center.x + width / 2;
    var top = center.y + height / 2

    if (width / 2 > -startx) {
        left = -width / 2;
        right = width / 2;
    } else {
        if (right > -startx) {
            right = -startx;
            left = -startx - width;
        }
        if (left < startx) {
            left = startx;
            right = startx + width;
        }
    }

    if (bottom < starty) {
        bottom = starty;
        top = starty + height;
    }
    if (top > -starty) {
        top = -starty;
        bottom = -starty - height;
    }

    var bounds = new CanvasSketch.Bounds(left, bottom, right, top);

    this.bounds = bounds;
    this.center = this.bounds.getCenter();

    /*
	//记录已经绘制vector的个数
    var index = 0;
    this.renderer.lock = true;
    for(var id in this.vectors){
        index++;
        if(index == this.vectorsCount) {
            this.renderer.lock = false;
        }
        this.drawVector(this.vectors[id]);
    }
    this.renderer.drawBackGround();
    */
    //this.renderer.redraw(0);
    //this.renderer.redraw(1);
    //this.renderer.redraw(2);
    this.control.refreshCanvas = true;
    this.control.refreshBackgroundCanvas = true;
    this.control.refreshSelectCanvas = true;
};

//通过屏幕坐标设定center。
Layer.prototype.getPositionFromPx = function (px) {
    return new CanvasSketch.Position(
        (px.x + this.bounds.left / this.res) * this.res,
        (this.bounds.top / this.res - px.y) * this.res
    );
};
/*
Layer.prototype.getWallThickness=function(id)
{
	if(id==null||typeof(id)=="undefined")
	{
		id=this.currentState.currentWallId;
	}
	
	if(id==null)
	{
		return null;
	}
	
	if(this.vectors[id].geometry.wallType==1)
	{
		return this.parameter.wallThickness;
	}
	else if(this.vectors[id].geometry.wallType==2)
	{
		return this.parameter.partitionThickness;
	}
	else 
	{
		return null;
	}
};
*/
Layer.prototype.getThickness = function (id, index) {
    return this.vectors[id].geometry.wallInfo[index].thick;
};

//获取symbol的厚度
Layer.prototype.getThickness2 = function (geometry) {
    if (geometry != null && typeof (geometry.wallType) != "undefined") {
        if (geometry.wallType == 1) {
            this.thickness = wallThickness;
        } else {
            this.thickness = partitionThickness;
        }
        return this.thickness;
    } else {
        return null;
    }
};

Layer.prototype.clear = function () {
    var size = new CanvasSketch.Size(parseInt(window.innerWidth), parseInt(window.innerHeight));
    this.size = size;
    this.maxBounds = new CanvasSketch.Bounds(-size.w / 2, -size.h / 2, size.w / 2, size.h / 2);
    this.bounds = new CanvasSketch.Bounds(-size.w / 2, -size.h / 2, size.w / 2, size.h / 2);
    this.center = this.bounds.getCenter();
    this.build.firstLines = [];
    this.build.endLines = [];
    //墙的厚度
    this.thickness = null;

    this.zoom = 100;
    this.getRes();
    this.vectors = {};
    //加入矢量图形的总个数。
    this.vectorsCount = 0;
};