io_export_paper_model.py 文件源码

def finalize_islands(self, is_landscape=False, title_height=0):
        for island in self.islands:
            if title_height:
                island.title = "[{}] {}".format(island.abbreviation, island.label)
            points = list(vertex.co for vertex in island.verts) + island.fake_verts
            angle = M.geometry.box_fit_2d(points)
            rot = M.Matrix.Rotation(angle, 2)
            # ensure that the island matches page orientation (portrait/landscape)
            dimensions = M.Vector(max(r * v for v in points) - min(r * v for v in points) for r in rot)
            if dimensions.x > dimensions.y != is_landscape:
                rot = M.Matrix.Rotation(angle + pi / 2, 2)
            for point in points:
                # note: we need an in-place operation, and Vector.rotate() seems to work for 3d vectors only
                point[:] = rot * point
            for marker in island.markers:
                marker.rot = rot * marker.rot
            bottom_left = M.Vector((min(v.x for v in points), min(v.y for v in points) - title_height))
            for point in points:
                point -= bottom_left
            island.bounding_box = M.Vector((max(v.x for v in points), max(v.y for v in points)))