From fef15c706fcbab1e6d2f6386e1a2bbec87414dac Mon Sep 17 00:00:00 2001
From: fieldOfView <aldo@fieldofview.com>
Date: Tue, 25 Oct 2016 22:51:44 +0200
Subject: [PATCH 1/2] Render an indication of the origin of the machine

---
 cura/BuildVolume.py | 38 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 38 insertions(+)

diff --git a/cura/BuildVolume.py b/cura/BuildVolume.py
index ce9967a5a2..865ab059e6 100644
--- a/cura/BuildVolume.py
+++ b/cura/BuildVolume.py
@@ -33,6 +33,9 @@ PRIME_CLEARANCE = 1.5
 ##  Build volume is a special kind of node that is responsible for rendering the printable area & disallowed areas.
 class BuildVolume(SceneNode):
     VolumeOutlineColor = Color(12, 169, 227, 255)
+    XAxisColor = Color(255, 0, 0, 255)
+    YAxisColor = Color(0, 0, 255, 255)
+    ZAxisColor = Color(0, 255, 0, 255)
 
     raftThicknessChanged = Signal()
 
@@ -45,6 +48,8 @@ class BuildVolume(SceneNode):
 
         self._shader = None
 
+        self._origin_mesh = None
+
         self._grid_mesh = None
         self._grid_shader = None
 
@@ -128,6 +133,7 @@ class BuildVolume(SceneNode):
             self._grid_shader = OpenGL.getInstance().createShaderProgram(Resources.getPath(Resources.Shaders, "grid.shader"))
 
         renderer.queueNode(self, mode = RenderBatch.RenderMode.Lines)
+        renderer.queueNode(self, mesh = self._origin_mesh)
         renderer.queueNode(self, mesh = self._grid_mesh, shader = self._grid_shader, backface_cull = True)
         if self._disallowed_area_mesh:
             renderer.queueNode(self, mesh = self._disallowed_area_mesh, shader = self._shader, transparent = True, backface_cull = True, sort = -9)
@@ -170,6 +176,38 @@ class BuildVolume(SceneNode):
 
         self.setMeshData(mb.build())
 
+        mb = MeshBuilder()
+
+        if self._global_container_stack.getProperty("machine_center_is_zero", "value"):
+            origin = (Vector(min_w, min_h, min_d) + Vector(max_w, min_h, max_d)) / 2
+        else:
+            origin = Vector(min_w, min_h, max_d)
+
+        axes_length = 10
+        axes_width = 0.5
+        mb.addCube(
+            width = axes_length,
+            height = axes_width,
+            depth = axes_width,
+            center = origin + Vector(axes_length / 2, 0, 0),
+            color = self.XAxisColor
+        )
+        mb.addCube(
+            width = axes_width,
+            height = axes_length,
+            depth = axes_width,
+            center = origin + Vector(0, axes_length / 2, 0),
+            color = self.YAxisColor
+        )
+        mb.addCube(
+            width = axes_width,
+            height = axes_width,
+            depth = axes_length,
+            center = origin - Vector(0, 0, axes_length / 2),
+            color = self.ZAxisColor
+        )
+        self._origin_mesh = mb.build()
+
         mb = MeshBuilder()
         mb.addQuad(
             Vector(min_w, min_h - 0.2, min_d),

From 55191b722a6a9e2123d47ae9f4c9c4b7a4dd89ff Mon Sep 17 00:00:00 2001
From: fieldOfView <aldo@fieldofview.com>
Date: Tue, 25 Oct 2016 23:06:23 +0200
Subject: [PATCH 2/2] Codestyle & documentation

---
 cura/BuildVolume.py | 29 +++++++++++++++--------------
 1 file changed, 15 insertions(+), 14 deletions(-)

diff --git a/cura/BuildVolume.py b/cura/BuildVolume.py
index 865ab059e6..c87f3a8cbd 100644
--- a/cura/BuildVolume.py
+++ b/cura/BuildVolume.py
@@ -49,6 +49,8 @@ class BuildVolume(SceneNode):
         self._shader = None
 
         self._origin_mesh = None
+        self._origin_line_length = 20
+        self._origin_line_width = 0.5
 
         self._grid_mesh = None
         self._grid_shader = None
@@ -178,32 +180,31 @@ class BuildVolume(SceneNode):
 
         mb = MeshBuilder()
 
+        # Indication of the machine origin
         if self._global_container_stack.getProperty("machine_center_is_zero", "value"):
             origin = (Vector(min_w, min_h, min_d) + Vector(max_w, min_h, max_d)) / 2
         else:
             origin = Vector(min_w, min_h, max_d)
 
-        axes_length = 10
-        axes_width = 0.5
         mb.addCube(
-            width = axes_length,
-            height = axes_width,
-            depth = axes_width,
-            center = origin + Vector(axes_length / 2, 0, 0),
+            width = self._origin_line_length,
+            height = self._origin_line_width,
+            depth = self._origin_line_width,
+            center = origin + Vector(self._origin_line_length / 2, 0, 0),
             color = self.XAxisColor
         )
         mb.addCube(
-            width = axes_width,
-            height = axes_length,
-            depth = axes_width,
-            center = origin + Vector(0, axes_length / 2, 0),
+            width = self._origin_line_width,
+            height = self._origin_line_length,
+            depth = self._origin_line_width,
+            center = origin + Vector(0, self._origin_line_length / 2, 0),
             color = self.YAxisColor
         )
         mb.addCube(
-            width = axes_width,
-            height = axes_width,
-            depth = axes_length,
-            center = origin - Vector(0, 0, axes_length / 2),
+            width = self._origin_line_width,
+            height = self._origin_line_width,
+            depth = self._origin_line_length,
+            center = origin - Vector(0, 0, self._origin_line_length / 2),
             color = self.ZAxisColor
         )
         self._origin_mesh = mb.build()