{"id":590,"date":"2016-12-13T13:44:21","date_gmt":"2016-12-13T18:44:21","guid":{"rendered":"http:\/\/jsevy.com\/wordpress\/?page_id=590"},"modified":"2017-09-02T15:14:45","modified_gmt":"2017-09-02T19:14:45","slug":"android-adxf-library","status":"publish","type":"page","link":"https:\/\/jsevy.com\/wordpress\/index.php\/java-and-android\/android-apps-and-libraries\/android-adxf-library\/","title":{"rendered":"Android ADXF Library"},"content":{"rendered":"

\"adxf_screenshot\"<\/a><\/p>\n

The Android ADXF library provides support for generation of DXF files for use with CAD programs using standard Android “draw” commands. The library provides a special Canvas subclass, DXFCanvas, that is associated with a DXF document and that renders draw commands into DXF syntax. A sequence of Android Canvas drawing method calls will thus create a structured DXF document that, when opened with a standard CAD program, will display the Canvas image as a CAD design that can be modified within the CAD program.<\/p>\n

This library is released under the MIT License.
\n<\/a><\/p>\n

Basic Workflow<\/h2>\n

The class DXFCanvas implements the graphics operations defined by the standard Android Canvas class. To create a DXF drawing, you use the standard Android Canvas drawing calls (including drawing, transformations, etc.) on an instance of DXFCanvas. The DXFCanvas will encode these Android drawing commands as DXF objects in an associated DXFDocument, which can then be saved as a DXF file.<\/p>\n

A DXFCanvas is associated with a DXFDocument. The basic workflow is:<\/p>\n

\/* Create a DXF document and get its associated DXFCanvas *\/
\nDXFDocument dxfDocument = new DXFDocument(“Example”);
\nDXFCanvas dxfCanvas = dxfDocument.getCanvas();<\/p>\n

\/* Do drawing commands as on any other Canvas *\/
\nPaint paint = new Paint();
\npaint.setColor(Color.RED);
\npaint.setTypeface(Typeface.SERIF);
\npaint.setTextSize(38);
\npaint.setStyle(Style.STROKE);
\ndxfCanvas.drawLine(0, 0,100, 100, paint);
\ndxfCanvas.drawRect(120, 180, 400, 400, paint);
\ndxfCanvas.drawText(“Some text”, 200, 600, paint);
\npaint.setStyle(Style.FILL);
\ndxfCanvas.skew(0.1f, 0.2f);
\ndxfCanvas.rotate(-35);
\ndxfCanvas.drawCircle(300, 300, 100, paint);<\/p>\n

\/* Write the DXF representation in the document to a file; DXF is just text, so the document generates a String as output *\/
\nString dxfText = dxfDocument.toDXFString();
\nString filePath = “path\/to\/file.dxf”;
\nFileWriter fileWriter = new FileWriter(filePath);
\nfileWriter.write(dxfText);
\nfileWriter.flush();
\nfileWriter.close();<\/p>\n

Features<\/h2>\n

The ADXF library provides most of the drawing operations available in the standard Canvas class. However, certain methods are unimplemented at present (some due to lack of support in DXF). These unimplemented operations will be ignored or throw an UnsupportedOperationException if used, as indicated below. Some additional features currently have no or limited support, as indicated below.<\/p>\n

Supported operations<\/h3>\n