Add mesh class.

pyviz3d/mesh.py

@@ -0,0 +1,36 @@
+"""Polygon mesh."""
+from shutil import copyfile
+import os
+
+class Mesh:
+    """Polygon mesh defined by .obj file and some solid color."""
+
+    def __init__(self, filename, translation=None, rotation=None, scale=None, color=None, visible=True):
+        self.filename = filename
+        self.translation = translation
+        self.rotation = rotation
+        self.scale = scale
+        self.color = color
+        self.visible = visible
+
+    def get_properties(self, filename):
+        """
+        :return: A dict conteining object properties. They are written into json and interpreted by javascript.
+        """
+        json_dict = {
+            'type': 'obj',
+            'filename': os.path.split(self.filename)[-1],
+            'translation': self.translation,
+            'rotation': self.rotation,
+            'scale': self.scale,
+            'color': self.color,
+            'visible': self.visible,
+            }
+        return json_dict
+
+    def write_binary(self, path):
+        obj_file = os.path.split(self.filename)[-1]
+        destination_dir = os.path.dirname(path)
+        destination_path = os.path.join(destination_dir, obj_file)
+        if not os.path.exists(destination_path):
+            copyfile(self.filename, destination_path)