65 lines
1.9 KiB
Python
65 lines
1.9 KiB
Python
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"""A decorative shapes"""
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import pygarment as pyg
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def sample_arc(curve, length, stride, n_points, shift=0):
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ts = [(shift + i*stride) / length for i in range(n_points)]
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verts = [curve.point(t) for t in ts]
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for i in range(len(verts)):
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verts[i] = [verts[i].real, verts[i].imag]
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return verts
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def Sun(width, depth, n_rays=8, d_rays=5, **kwargs):
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"""Sun-like mark"""
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# Outer arc
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out_arc = pyg.CircleEdgeFactory.from_three_points(
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[0, 0], [width, 0], [width/2, depth]
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)
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in_arc = pyg.CircleEdgeFactory.from_three_points(
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[d_rays, 0], [width - d_rays, 0], [width/2, depth - d_rays]
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)
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out_curve = out_arc.as_curve()
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in_curve = in_arc.as_curve()
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# Sample with stride
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out_stride = out_arc.length() / n_rays
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in_stride = in_arc.length() / n_rays
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out_verts = sample_arc(out_curve, out_arc.length(),
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out_stride, n_rays, out_stride / 2)
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in_verts = sample_arc(in_curve, in_arc.length(), in_stride, n_rays + 1, 0)
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# Mix the vertices in the right order
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verts = out_verts
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for i in range(len(in_verts)):
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verts.insert(i*2, in_verts[i])
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shape = pyg.EdgeSeqFactory.from_verts(*verts)
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return shape, shape
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def SIGGRAPH_logo(width, depth=None, **kwargs):
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"""Shape of SIGGRAPH Logo (split vertically)"""
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filename='./assets/img/siggraph_logo_thick_connection.svg' # NOTE assumes the script is run from the root
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# TODOLOW path w.r.t. current file
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left_seq, right_seq = pyg.EdgeSeqFactory.halfs_from_svg(
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filename, target_height=width)
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return left_seq, right_seq
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def SVGFile(width, filename, depth=None, **kwargs):
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"""Shape loaded from any svg file:
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The shape is expected to consist of non-nested loops
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each passing through OY once
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"""
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left_seq, right_seq = pyg.EdgeSeqFactory.halfs_from_svg(
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filename, target_height=width)
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return left_seq, right_seq
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