init_code

assets/garment_programs/shapes.py

@@ -0,0 +1,64 @@
+"""A decorative shapes"""
+import pygarment as pyg
+
+
+def sample_arc(curve, length, stride, n_points, shift=0):
+    ts = [(shift + i*stride) / length for i in range(n_points)]
+    verts = [curve.point(t) for t in ts]
+
+    for i in range(len(verts)):
+        verts[i] = [verts[i].real, verts[i].imag]
+
+    return verts
+
+
+def Sun(width, depth, n_rays=8, d_rays=5, **kwargs):
+    """Sun-like mark"""
+
+    # Outer arc
+    out_arc = pyg.CircleEdgeFactory.from_three_points(
+        [0, 0], [width, 0], [width/2, depth]
+    )
+    in_arc = pyg.CircleEdgeFactory.from_three_points(
+        [d_rays, 0], [width - d_rays, 0], [width/2, depth - d_rays]
+    )
+    out_curve = out_arc.as_curve()
+    in_curve = in_arc.as_curve()
+
+    # Sample with stride
+    out_stride = out_arc.length() / n_rays
+    in_stride = in_arc.length() / n_rays
+    
+    out_verts = sample_arc(out_curve, out_arc.length(),
+                           out_stride, n_rays, out_stride / 2)
+    in_verts = sample_arc(in_curve, in_arc.length(), in_stride, n_rays + 1, 0)
+
+    # Mix the vertices in the right order
+    verts = out_verts
+    for i in range(len(in_verts)):
+        verts.insert(i*2, in_verts[i])
+
+    shape = pyg.EdgeSeqFactory.from_verts(*verts)
+    return shape, shape
+
+
+def SIGGRAPH_logo(width, depth=None, **kwargs):
+    """Shape of SIGGRAPH Logo (split vertically)"""
+
+    filename='./assets/img/siggraph_logo_thick_connection.svg'   # NOTE assumes the script is run from the root
+    # TODOLOW path w.r.t. current file
+    left_seq, right_seq = pyg.EdgeSeqFactory.halfs_from_svg(
+        filename, target_height=width)
+
+    return left_seq, right_seq
+
+
+def SVGFile(width, filename, depth=None, **kwargs):
+    """Shape loaded from any svg file:
+        The shape is expected to consist of non-nested loops
+        each passing through OY once
+    """
+
+    left_seq, right_seq = pyg.EdgeSeqFactory.halfs_from_svg(
+        filename, target_height=width)
+    return left_seq, right_seq