Java 生成dxf文件

    用Java簡單封裝了一個導出DXF文件的庫，沒有使用其他第三方接口，目前支持輸出點、多段線、單行文本、塊、圖層、支持更改任意一個圖元的顏色，塊支持自定義屬性（增強屬性塊，屬性字段可自定義添加），多段線的凸度計算不出來沒頭緒先不搞，後續功能有空再升級繪製其他圖元。。。

 

調用過程如下：

 DXFDocument dxfDocument = DXFDocument.newInstance();

        //region 定義圖層

        //初始化線圖層
        LayerTableEntity lineLayer = new LayerTableEntity("line");
        //設置圖層顏色
        lineLayer.setLayerColorIndex(2);
        //定義圖層到文檔
        dxfDocument.createLayer(lineLayer);

        //初始化點圖層
        LayerTableEntity pointLayer = new LayerTableEntity("point");
        //設置圖層顏色
        pointLayer.setLayerColorIndex(10);
        //定義圖層到文檔
        dxfDocument.createLayer(pointLayer);

        //endregion

        //region 定義塊

        BlockCustom blockCustom = new BlockCustom(dxfDocument, "WEIPI");
        //塊內容定義
        LWPolyLineEntity lwPolyLineEntity = new LWPolyLineEntity(0, 0, 0);
        lwPolyLineEntity.addDXFPoint(new DXFPoint(0.1, 0, 0));
        lwPolyLineEntity.addDXFPoint(new DXFPoint(-0.1, 0, 0));
        lwPolyLineEntity.setWidth(0.2);
        blockCustom.addEntity(lwPolyLineEntity);
        //塊屬性定義
        Att attPointName = new Att("x", "0");
        Att attPointHeight = new Att("y", "0");
        blockCustom.addAtt(attPointName);
        blockCustom.addAtt(attPointHeight);
        blockCustom.addAtt( new Att("PointName", "Point-1"));

        //定義塊到文檔中
        dxfDocument.defineBlock(blockCustom);

        //endregion

        //region 線、塊繪製

        Random random = new Random();

        //產生100條多段線每條線50個點，顏色隨機，
        for (int j = 1; j <= 20; j++) {
            LWPolyLineEntity polyLineEntity = new LWPolyLineEntity(0, 0, 0);
            polyLineEntity.setLayer(lineLayer);
            polyLineEntity.setColor(random.nextInt(240));
            for (int i = 0; i < 50; i++) {
                double x = i * j;
                double y = 10 * Math.sin(i * j) + j * 10;
                polyLineEntity.addDXFPoint(new DXFPoint(x, y, 0));
                BlockEntity blockEntity = new BlockEntity(dxfDocument, x, y, 0.0, blockCustom);
                blockEntity.setLayer(pointLayer);
                //添加屬性
                Att pn = new Att("PointName", "Point" + j + "-" + i);
                pn.setTextColorIndex(random.nextInt(240));
                Att xAtt = new Att("x", x + "");
                //設置該屬性不顯示到圖中
                xAtt.setAttStatus(Att.ATT_STATUS_UNVISIBLE);
                Att yAtt = new Att("y", y + "");
                yAtt.setAttStatus(Att.ATT_STATUS_UNVISIBLE);
                blockEntity.addAtt(xAtt);
                blockEntity.addAtt(yAtt);
                blockEntity.addAtt(pn);

                blockEntity.setTextColorIndex(random.nextInt(240));
                dxfDocument.addEntity(blockEntity);
            }
            dxfDocument.addEntity(polyLineEntity);
        }

        //endregion

        try {
            dxfDocument.writeToDXF("78.dxf");
        } catch (Exception e) {
            e.printStackTrace();
        }

 

 

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