REN-52: Ensure no default camera is renderable

colorbleed/plugins/maya/publish/validate_render_no_default_cameras.py

@@ -0,0 +1,40 @@
+from maya import cmds
+
+import pyblish.api
+import colorbleed.api
+import colorbleed.maya.lib as lib
+
+
+class ValidateRenderNoDefaultCameras(pyblish.api.InstancePlugin):
+    """Ensure no default (startup) cameras are to be rendered."""
+
+    order = colorbleed.api.ValidateContentsOrder
+    hosts = ['maya']
+    families = ['colorbleed.renderlayer']
+    label = "No Default Cameras Renderable"
+    actions = [colorbleed.api.SelectInvalidAction]
+
+    @staticmethod
+    def get_invalid(instance):
+
+        layer = instance.data["setMembers"]
+
+        # Collect default cameras
+        cameras = cmds.ls(type='camera', long=True)
+        defaults = [cam for cam in cameras if
+                    cmds.camera(cam, query=True, startupCamera=True)]
+
+        invalid = []
+        with lib.renderlayer(layer):
+            for cam in defaults:
+                if cmds.getAttr(cam + ".renderable"):
+                    invalid.append(cam)
+
+        return invalid
+
+    def process(self, instance):
+        """Process all the cameras in the instance"""
+        invalid = self.get_invalid(instance)
+        if invalid:
+            raise RuntimeError("Renderable default cameras "
+                               "found: {0}".format(invalid))