commit 60858ae3da558ddde59be8c9ed8ed23ea9e345fb · cduck.me/drawsvg

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DESCRIPTION.rst

···

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       Most common SVG tags are supported and others can easily be added by

     

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       writing a small subclass of ``DrawableBasicElement`` or

     

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       ``DrawableParentElement``.

     

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       Install

     

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       =======

     

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       drawSvg is available on PyPI:

     

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       ::

     

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           $ pip3 install drawSvg

     

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       Examples

     

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       ========

     

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       Basic drawing elements

     

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       ~~~~~~~~~~~~~~~~~~~~~~

     

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       .. code:: python

     

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           d = draw.Drawing(200, 100, origin='center')

     

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           d.append(draw.Lines(-80, -45,

     

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                               70, -49,

     

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                               95, 49,

     

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                               -90, 40,

     

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                               close=False,

     

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                       fill='#eeee00',

     

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                       stroke='black'))

     

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           d.append(draw.Rectangle(0,0,40,50, fill='#1248ff'))

     

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           d.append(draw.Circle(-40, -10, 30,

     

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                       fill='red', stroke_width=2, stroke='black'))

     

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           p = draw.Path(stroke_width=2, stroke='green',

     

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                         fill='black', fill_opacity=0.5)

     

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           p.M(-30,5)  # Start path at point (-30, 5)

     

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           p.l(60,30)  # Draw line to (60, 30)

     

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           p.h(-70)    # Draw horizontal line to x=-70

     

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           p.Z()       # Draw line to start

     

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           d.append(p)

     

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           d.append(draw.ArcLine(60,-20,20,60,270,

     

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                       stroke='red', stroke_width=5, fill='red', fill_opacity=0.2))

     

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           d.append(draw.Arc(60,-20,20,60,270,cw=False,

     

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                       stroke='green', stroke_width=3, fill='none'))

     

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           d.append(draw.Arc(60,-20,20,270,60,cw=True,

     

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                       stroke='blue', stroke_width=1, fill='black', fill_opacity=0.3))

     

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           d.setPixelScale(2)  # Set number of pixels per geometry unit

     

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           #d.setRenderSize(400,200)  # Alternative to setPixelScale

     

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           d.saveSvg('example.svg')

     

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           d.savePng('example.png')

     

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           # Display in iPython notebook

     

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           d.rasterize()  # Display as PNG

     

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           d  # Display as SVG

     

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       .. image:: https://github.com/cduck/drawSvg/raw/master/example1.png

     

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          :alt: Example output image

     

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       Gradients

     

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       ~~~~~~~~~

     

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       .. code:: python

     

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           d = draw.Drawing(1.5, 0.8, origin='center')

     

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           d.draw(draw.Rectangle(-0.75,-0.5,1.5,1, fill='#ddd'))

     

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           # Create gradient

     

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           gradient = draw.RadialGradient(0,-0.35,0.7*10)

     

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           gradient.addStop(0.5/0.7/10, 'green', 1)

     

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           gradient.addStop(1/10, 'red', 0)

     

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           # Draw a shape to fill with the gradient

     

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           p = draw.Path(fill=gradient, stroke='black', stroke_width=0.002)

     

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           p.arc(0,-0.35,0.7,30,120)

     

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           p.arc(0,-0.35,0.5,120,30,cw=True, includeL=True)

     

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           p.Z()

     

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           d.append(p)

     

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           # Draw another shape to fill with the same gradient

     

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           p = draw.Path(fill=gradient, stroke='red', stroke_width=0.002)

     

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           p.arc(0,-0.35,0.75,130,160)

     

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           p.arc(0,-0.35,0,160,130,cw=True, includeL=True)

     

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           p.Z()

     

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           d.append(p)

     

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           # Another gradient

     

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           gradient2 = draw.LinearGradient(0.1,-0.35,0.1+0.6,-0.35+0.2)

     

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           gradient2.addStop(0, 'green', 1)

     

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           gradient2.addStop(1, 'red', 0)

     

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           d.append(draw.Rectangle(0.1,-0.35,0.6,0.2,

     

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                                   stroke='black', stroke_width=0.002,

     

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                                   fill=gradient2))

     

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           # Display

     

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           d.setRenderSize(w=600)

     

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           d

     

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       .. image:: https://github.com/cduck/drawSvg/raw/master/example2.png

     

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          :alt: Example output image

     

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       Duplicate geometry and clip paths

     

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       ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

     

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       .. code:: python

     

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           d = draw.Drawing(1.4, 1.4, origin='center')

     

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           # Define clip path

     

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           clip = draw.ClipPath()

     

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           clip.append(draw.Rectangle(-.25,.25-1,1,1))

     

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           # Draw a cropped circle

     

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           c = draw.Circle(0,0,0.5, stroke_width='0.01', stroke='black',

     

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                                    fill_opacity=0.3, clip_path=clip,

     

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                                    id='circle')

     

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           d.append(c)

     

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           # Make a transparent copy, cropped again

     

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           g = draw.Group(opacity=0.5, clip_path=clip)

     

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           g.append(draw.Use('circle', 0.25,0.1))

     

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           d.append(g)

     

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           # Display

     

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           d.setRenderSize(400)

     

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           d.rasterize()

     

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       .. image:: https://github.com/cduck/drawSvg/raw/master/example3.png

     

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          :alt: Example output image

     

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       Implementing other SVG tags

     

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       ~~~~~~~~~~~~~~~~~~~~~~~~~~~

     

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       .. code:: python

     

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           # Subclass DrawingBasicElement if it cannot have child nodes

     

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           # Subclass DrawingParentElement otherwise

     

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           # Subclass DrawingDef if it must go between <def></def> tags in an SVG

     

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           class Hyperlink(draw.DrawingParentElement):

     

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               TAG_NAME = 'a'

     

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               def __init__(self, href, target=None, **kwargs):

     

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                   # Other init logic...

     

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                   # Keyword arguments to super().__init__() correspond to SVG node

     

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                   # arguments: stroke_width=5 -> stroke-width="5"

     

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                   super().__init__(href=href, target=target, **kwargs)

     

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           d = draw.Drawing(1, 1.2, origin='center')

     

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           # Create hyperlink

     

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           hlink = Hyperlink('https://www.python.org', target='_blank',

     

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                             transform='skewY(-30)')

     

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           # Add child elements

     

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           hlink.append(draw.Circle(0,0,0.5, fill='green'))

     

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           hlink.append(draw.Text('Hyperlink',0.2, 0,0, center=0.6, fill='white'))

     

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           # Draw and display

     

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           d.append(hlink)

     

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           d.setRenderSize(200)

     

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           d

     

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       .. image:: https://github.com/cduck/drawSvg/raw/master/example4.png

     

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          :alt: Example output image

     

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+86 -5

README.md

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       # drawSvg

     

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       This is a Python 3 library for programmatically generating SVG images (vector drawings) and rendering them or displaying them in an iPython notebook.

     

       4
        
       

     

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       Most common SVG tags are supported and others can easily be added by writing a small subclass of `DrawableBasicElement` or `DrawableParentElement`.

     

       0
        
       
     

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       # Install

     

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       drawSvg is available on PyPI:

     
···

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       d  # Display as SVG

     

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       ```

     

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       ![Example output image](https://github.com/cduck/drawSvg/raw/master/example1.png)

     

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       ### Gradients

     

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       ```python

     
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       d

     

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       ```

     

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       ![Example output image](https://github.com/cduck/drawSvg/raw/master/example2.png)

     

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       ### Duplicate geometry and clip paths

     

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       ```python

     
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       d.rasterize()

     

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       ```

     

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       ![Example output image](https://github.com/cduck/drawSvg/raw/master/example3.png)

     

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       ### Implementing other SVG tags

     

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       ```python

     
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       d

     

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       ```

     

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       ![Example output image](https://github.com/cduck/drawSvg/blob/master/example4.svg)

     

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···

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       # drawSvg

     

       2
        
       

     

       3
       +
       A Python 3 library for programmatically generating SVG images (vector drawings) and rendering them or displaying them in an iPython notebook.

     

       4
        
       

     

       5
        
       Most common SVG tags are supported and others can easily be added by writing a small subclass of `DrawableBasicElement` or `DrawableParentElement`.

     

       6
       +
       

     

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       An interactive Jupyter widget, `drawSvg.widgets.DrawingWidget`, is included that can update drawings based on mouse events.

     

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       # Install

     

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       drawSvg is available on PyPI:

     
···

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       d  # Display as SVG

     

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       ```

     

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       61
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       ![Example output image](https://raw.githubusercontent.com/cduck/drawSvg/master/examples/example1.png)

     

       62
        
       

     

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       ### Gradients

     

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       ```python

     
···

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       d

     

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       ```

     

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       103
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       ![Example output image](https://raw.githubusercontent.com/cduck/drawSvg/master/examples/example2.png)

     

       104
        
       

     

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       ### Duplicate geometry and clip paths

     

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       ```python

     
···

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       d.rasterize()

     

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       ```

     

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       ![Example output image](https://raw.githubusercontent.com/cduck/drawSvg/master/examples/example3.png)

     

       132
        
       

     

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       ### Implementing other SVG tags

     

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       ```python

     
···

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       d

     

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       ```

     

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       ![Example output image](https://github.com/cduck/drawSvg/blob/master/examples/example4.svg)

     

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       ### Interactive Widget

     

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       ```python

     

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       import drawSvg as draw

     

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       from drawSvg.widgets import DrawingWidget

     

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       import hyperbolic.poincare.shapes as hyper  # pip3 install hyperbolic

     

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       # Create drawing

     

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       d = draw.Drawing(2, 2, origin='center')

     

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       d.setRenderSize(500)

     

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       d.append(draw.Circle(0, 0, 1, fill='orange'))

     

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       group = draw.Group()

     

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       d.append(group)

     

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       # Update the drawing based on user input

     

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       click_list = []

     

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       def redraw(points):

     

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           group.children.clear()

     

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           for x1, y1 in points:

     

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               for x2, y2 in points:

     

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                   if (x1, y1) == (x2, y2): continue

     

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                   p1 = hyper.Point.fromEuclid(x1, y1)

     

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                   p2 = hyper.Point.fromEuclid(x2, y2)

     

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                   if p1.distanceTo(p2) <= 2:

     

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                       line = hyper.Line.fromPoints(*p1, *p2, segment=True)

     

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                       group.draw(line, hwidth=0.2, fill='white')

     

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           for x, y in points:

     

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               p = hyper.Point.fromEuclid(x, y)

     

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               group.draw(hyper.Circle.fromCenterRadius(p, 0.1),

     

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                          fill='green')

     

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       redraw(click_list)

     

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       # Create interactive widget and register mouse events

     

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       widget = DrawingWidget(d)

     

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       @widget.mousedown

     

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       def mousedown(widget, x, y, info):

     

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           if (x**2 + y**2) ** 0.5 + 1e-5 < 1:

     

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               click_list.append((x, y))

     

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           redraw(click_list)

     

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           widget.refresh()

     

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       @widget.mousemove

     

       205
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       def mousemove(widget, x, y, info):

     

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           if (x**2 + y**2) ** 0.5 + 1e-5 < 1:

     

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               redraw(click_list + [(x, y)])

     

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           widget.refresh()

     

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       widget

     

       210
       +
       ```

     

       211
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       212
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       ![Example output image](https://raw.githubusercontent.com/cduck/drawSvg/master/examples/example5.gif)

     

       213
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       ### Animation

     

       215
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       ```python

     

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       import drawSvg as draw

     

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       +
       

     

       218
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       # Draw a frame of the animation

     

       219
       +
       def draw_frame(t):

     

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           d = draw.Drawing(2, 6.05, origin=(-1,-1.05))

     

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           d.setRenderSize(h=300)

     

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           d.append(draw.Rectangle(-2, -2, 4, 8, fill='white'))

     

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           d.append(draw.Rectangle(-1, -1.05, 2, 0.05, fill='brown'))

     

       224
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           t = (t + 1) % 2 - 1

     

       225
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           y = 4 - t**2 * 4

     

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           d.append(draw.Circle(0, y, 1, fill='lime'))

     

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           return d

     

       228
       +
       

     

       229
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       with draw.animate_jupyter(draw_frame, delay=0.05) as anim:

     

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       # Or:

     

       231
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       #with draw.animate_video('example6.gif', draw_frame, duration=0.05

     

       232
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       #                       ) as anim:

     

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           # Add each frame to the animation

     

       234
       +
           for i in range(20):

     

       235
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               anim.draw_frame(i/10)

     

       236
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           for i in range(20):

     

       237
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               anim.draw_frame(i/10)

     

       238
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           for i in range(20):

     

       239
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               anim.draw_frame(i/10)

     

       240
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       ```

     

       241
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       242
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       ![Example output image](https://raw.githubusercontent.com/cduck/drawSvg/master/examples/example6.gif)

     

       243

example1.png examples/example1.png

example1.svg examples/example1.svg

example2.png examples/example2.png

example2.svg examples/example2.svg

example3.png examples/example3.png

example3.svg examples/example3.svg

example4.png examples/example4.png

example4.svg examples/example4.svg

examples/example5.gif

This is a binary file and will not be displayed.

examples/example6.gif

This is a binary file and will not be displayed.

+13 -8

setup.py

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       from setuptools import setup, find_packages

     

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       version = '1.1.0'

     

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       try:

     

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           with open('DESCRIPTION.rst', 'r') as f:

     

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               longDesc = f.read()

     

       8
        
       except:

     

       9
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           print('Warning: Could not open DESCRIPTION.rst.  long_description will be set to None.')

     

       10
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           longDesc = None

     

       11
        
       

     

       12
        
       setup(

     

       13
        
           name = 'drawSvg',

     

       14
        
           packages = find_packages(),

     

       15
        
           version = version,

     

       16
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           description = 'This is a Python 3 library for programmatically generating SVG images (vector drawings) and rendering them or displaying them in an iPython notebook.',

     

       17
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           long_description = longDesc,

     

       0
        
       
     

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           author = 'Casey Duckering',

     

       19
        
           #author_email = '',

     

       20
        
           url = 'https://github.com/cduck/drawSvg',

     

       21
        
           download_url = 'https://github.com/cduck/drawSvg/archive/{}.tar.gz'.format(version),

     

       22
       -
           keywords = ['SVG', 'draw', 'graphics', 'iPython', 'Jupyter'],

     

       23
        
           classifiers = [

     

       24
        
               'License :: OSI Approved :: MIT License',

     

       25
        
               'Programming Language :: Python :: 3',

     
···

       28
        
           ],

     

       29
        
           install_requires = [

     

       30
        
               'cairoSVG',

     

       0
        
       
     

       0
        
       
     

       31
        
           ],

     

       32
        
       )

     

       33

···

       1
        
       from setuptools import setup, find_packages

     

       2
       +
       import logging

     

       3
       +
       logger = logging.getLogger(__name__)

     

       4
        
       

     

       5
       +
       version = '1.2.0'

     

       6
        
       

     

       7
        
       try:

     

       8
       +
           with open('README.md', 'r') as f:

     

       9
       +
               long_desc = f.read()

     

       10
        
       except:

     

       11
       +
           logger.warning('Could not open README.md.  long_description will be set to None.')

     

       12
       +
           long_desc = None

     

       13
        
       

     

       14
        
       setup(

     

       15
        
           name = 'drawSvg',

     

       16
        
           packages = find_packages(),

     

       17
        
           version = version,

     

       18
       +
           description = 'A Python 3 library for programmatically generating SVG images (vector drawings) and rendering them or displaying them in an iPython notebook.',

     

       19
       +
           long_description = long_desc,

     

       20
       +
           long_description_content_type = 'text/markdown',

     

       21
        
           author = 'Casey Duckering',

     

       22
        
           #author_email = '',

     

       23
        
           url = 'https://github.com/cduck/drawSvg',

     

       24
        
           download_url = 'https://github.com/cduck/drawSvg/archive/{}.tar.gz'.format(version),

     

       25
       +
           keywords = ['SVG', 'draw', 'graphics', 'iPython', 'Jupyter', 'widget'],

     

       26
        
           classifiers = [

     

       27
        
               'License :: OSI Approved :: MIT License',

     

       28
        
               'Programming Language :: Python :: 3',

     
···

       31
        
           ],

     

       32
        
           install_requires = [

     

       33
        
               'cairoSVG',

     

       34
       +
               'numpy',

     

       35
       +
               'imageio',

     

       36
        
           ],

     

       37
        
       )

     

       38