I am using .NET Core Application and My requirement is to convert DWG to SVG and SVG to DWG formats.
I have converted DWG format to SVG format using Aspose.CAD library successfully as below.
// Load the input DWG file
Image image = Image.Load("sample.dwg");
// Initialize SvgOptions class object
Aspose.CAD.ImageOptions.SvgOptions options = new Aspose.CAD.ImageOptions.SvgOptions();
// Set SVG color mode
options.ColorType = SvgColorMode.Grayscale;
options.TextAsShapes = true;
// Save output SVG file
image.Save("sample.svg", options);
But I am not getting how to convert back SVG to DWG.
It would be really helpful to me if someone suggests me other alternatives for Aspose.CAD library which can achieve DWG to SVG and SVG to DWG. I am OK even if its a Licensed Version.
Related
using quantstat library's report.py module, I am able to successfully generate .html images when I call quanstat.reports.html function, and quanstat.reports.full function to generate .png images for the various graphs, charts, reports.
https://github.com/ranaroussi/quantstats/blob/main/quantstats/reports.py
can someone help me at the earliest how to use the same 'report.py' module or other modules in this 'quantstat' library to generate images in .svg format so that they can be opened in any browser such as google-chrome.
Which files of this library need to be modified or enhanced with python code to successfully generate .svg files ?
following code is generating png images when I am passing file path to 'savefig' in my local. used VS Code as IDE
import quantstats as qs
stock1 = qs.utils.download_returns('XLE', period="1y")
stock2 = qs.utils.download_returns('SPY' , period="1y")
qs.reports.full(stock1, stock2)
how can I get images in .svg format using same qs.reports.full(stock1, stock2) ?
I want to add a SVG image to PdfSignatureAppearance. The method setSignatureGraphic has an ImageData parameter now in iText7. I couldn't find a way to create an imageData from SVG because ImageDataFactory is not supporting this format.
Can you please guide me on how to do that?
Note that with iText5 I was able to add svg after converting it to PDF and import it to a PDFTemplate then create an image after instantiate the PDFTemplate. setSignatureGraphic was accepting com.itextpdf.text.Image as parameter
Your question could be split into 2 more precise and simple ones:
How to process an SVG with iText?
How to create an ImageData instance out of the result of point 1?
As for question 1: one can use SvgConverter class (part of iTextCore's svg module). Unfortunately there are only PDF-related methods there: an SVG could be converted either to Image (class of layout module), or to PdfFormXObject (again PDF-related) or to a PDF file.
// to PDF
SvgConverter.convertToImage(new FileInputStream(sourceFolder + "your_svg.svg"), signer.getDocument()); // the mentioned `signer` is the instance of PdfSigner which you use to sign the document
// to Image
SvgConverter.convertToImage(new FileInputStream(sourceFolder + "your_svg.svg"), new File(destinationFolder + "svgAsPdf.pdf"));
As for question 2, there are several answers:
a) Suppose that you want to use this Image as the PdfSignatureAppearance's graphics data. For now the class doesn't provide a convenient setter, however, you could use some low level methods - either getLayer0 or getLayer2 to get the signature's background or foreground. They are represented by PDfFormXObject, hence you can use Canvas to add your image to them:
Image svg = SvgConverter.convertToImage(new FileInputStream(sourceFolder + "your_svg.svg"), signer.getDocument());
Canvas canvas = new Canvas(appearance.getLayer0(), signer.getDocument());
canvas.add(svg);
canvas.close();
b) Suppose that your goal is to use the rendered bitmap as the PdfSignatureAppearance's graphics data. Then there is a specific iText product - pdfRender - which converts PDF files to images. The following code could be applied:
PdfToImageRenderer.renderPdf(new File(destinationFolder + "svgAsPdf.pdf"), new File(folderForTheResultantImage));
Now you can create an ImageData instance out of the resultant image file (by default a PDF is converted to a series of images with the format "pdfnamePAGE_NUMBER.jpg", but one could customize either the name or the output image format). In your case the PDF consist of just one page (which represents the converted SVG) and its name is "image1.jpg". The rest is obvious:
appearance.setSignatureGraphic(ImageDataFactory.create(destinationFolder + "image1.jpg"));
Ok I will admit to being a noob with Gideros. I am trying to import an svg file. I followed the same procedure as you would do for a png file, that is create a texture using:
myTexture = Texture.new("orangeSquare.svg")
orangeSquare = Bitmap.new(myTexture)
stage:addChild(orangeSquare)
Unsurprisingly it doesn't work (output gives orangeSquare.svg: Error while reading image file. and program does not run) as it is not a bitmap file. Is there an alternative to import svg files? It is probably a very simple solution but I have been searching for some time without an answer. I am considering giving up on Gideros if I don't find an answer to what should be a simple problem.
You can not import the svg directly, you need to pass the svg data:
--Banana shape, SVG path format
local banana = "M8.64,223.948c0,0,143.468,3.431,185.777-181.808c2.673-11.702-1.23-20.154,1.316-33.146h16.287c0,0-3.14,17.248,1.095,30.848c21.392,68.692-4.179,242.343-204.227,196.59L8.64,223.948z"
p=Path2D.new()
p:setSvgPath(banana) --Set the path from a SVG path description
p:setLineThickness(5) -- Outline width
p:setFillColor(0xFFFF80,0.7) --Fill color
p:setLineColor(0x404000) --Line color
p:setAnchorPosition(100,100)
stage:addChild(p)
You can find more info on their wiki: https://wiki.giderosmobile.com/index.php?search=svg&title=Special%3ASearch&go=Go&fulltext=1
They also have it as a sample project when you open gideros studio.
I've tried to convert a SVG file to PNG with antialiasing off in Magick++ but I wasn't successful. But I was able to convert the SVG file to PDF with another program and the use the ImageMagick convert command to convert the PDF file to PNG.
How can I use ImageMagick to do it? The command I use for converting PDF to PNG is this:
convert +antialias -interpolate Nearest -filter point -resize 1000x1000 "img.pdf" PNG24:"filter.png"
Is there any way to use Magick++ to do that or better, convert SVG to PNG directly with antialiasing off?
Thanks in advance.
Edit:
The answer given in this post doesn't work for me. Possible because I'm using a colored SVG instead of 1-bit alpha channel. Also I mentioned in my question that I'm also looking for a way to do this in Magick++.
Magick++ has the Magick::Image::textAntiAlias & Magick::Image::strokeAntiAlias methods available, but they would only be useful if your parsing the SVG and rebuilding the image (i.e. roll-your-own SVG engine) one SVG element at a time.
As #ccprog pointed out in the comments; once the decoder utility rasters the vectors, the damage is done & setting the flags would not have an effect on the resulting resize.
Without seeing the SVG, I can only speculate what the problem is. I would suggest setting the document size before reading the SVG content.
For example, read the image at a smaller size than resample up.
Magick::Image img;
img.size(Magick::Geometry(100, 100)); // Decode to a small context
img.read("input.svg");
img.interpolate(Magick::NearestInterpolatePixel);
img.filterType(Magick::PointFilter);
img.resize(Magick::Geometry(600, 600));
img.write("PNG24:output#100x100.png");
Or render at larger size then the finial image.
Magick::Image img;
img.size(Magick::Geometry(1000, 1000)); // Decode to a larger context
img.read("input.svg");
img.interpolate(Magick::NearestInterpolatePixel);
img.filterType(Magick::PointFilter);
img.resize(Magick::Geometry(600, 600));
img.write("PNG24:output#1000x1000.png");
Update from comments
For Postscript (PDF) & True-Type antialiasing, you would set Magick::Image::textAntiAlias (or Magick::Image::antiAlias if using IM6) to false. Just ensure that the density is set to allow any overhead.
Magick::Image img;
img.density(Magick::Point(300));
if (MagickLibVersion < 0x700) {
img.antiAlias(false);
} else {
img.textAntiAlias(false);
}
img.interpolate(Magick::NearestInterpolatePixel);
img.filterType(Magick::PointFilter);
img.read("input.pdf");
img.resize(Magick::Geometry(1000, 1000));
img.write("PNG24:output.png");
I am using gdcm ImageReader to read multiframe dicom file. It reads multiframe correctly but I am unable to display the multiframe dicom file.
I am using vtkImageViewer to display single frame image,
vtkImageViewer viewer = new vtkImageViewer();
vtkDICOMImageReader reader = new vtkDICOMImageReader();
reader.SetInputfile(..\\inputFile);
viewer.SetInput(reader.GetOutput());
It displays single frame images correctly but does not display multiframe images.
Anybody knows how to display multiframe dicom files???
I would advise you to use vtkImageViewer2 instead of vtkImageViewer in this context. The former has a method, SetSlice, where, according to the documentation:
'Each call to SetSlice() changes the image data (slice) displayed AND changes the depth of the displayed slice in the 3D scene'
Example**:
vtkSmartPointer<vtkImageViewer2> imageViewer = vtkSmartPointer<vtkImageViewer2>::New();
imageViewer->SetSlice(5); //Specify the index/slice in image data
** Assumes you have set the input connection/data, example in c++ language.