From bda48858ba824d69995488ce409884307d6ba8d6 Mon Sep 17 00:00:00 2001
From: Gustl22 <user.rebo@gmx.de>
Date: Sun, 3 Mar 2019 21:54:41 +0100
Subject: [PATCH] Poi3D models: correct flip axis on loading (#687)

---
 vtm-gdx-poi3d/src/org/oscim/gdx/poi3d/GdxModelLayer.java  | 4 +++-
 vtm-gdx-poi3d/src/org/oscim/gdx/poi3d/GdxRenderer3D2.java | 6 ++++--
 vtm-gdx-poi3d/src/org/oscim/gdx/poi3d/Poi3DLayer.java     | 4 +++-
 3 files changed, 10 insertions(+), 4 deletions(-)

diff --git a/vtm-gdx-poi3d/src/org/oscim/gdx/poi3d/GdxModelLayer.java b/vtm-gdx-poi3d/src/org/oscim/gdx/poi3d/GdxModelLayer.java
index e29d89cb..27e496dd 100644
--- a/vtm-gdx-poi3d/src/org/oscim/gdx/poi3d/GdxModelLayer.java
+++ b/vtm-gdx-poi3d/src/org/oscim/gdx/poi3d/GdxModelLayer.java
@@ -1,6 +1,6 @@
 /*
  * Copyright 2014 Hannes Janetzek
- * Copyright 2018 Gustl22
+ * Copyright 2018-2019 Gustl22
  *
  * This program is free software: you can redistribute it and/or modify it under the
  * terms of the GNU Lesser General Public License as published by the Free Software
@@ -106,8 +106,10 @@ public class GdxModelLayer extends Layer implements Map.UpdateListener {
                     model.nodes.removeIndex(0);
                     model.nodes.add(node);
                 }
+                node.scale.set(1, 1, -1);
                 node.rotation.setFromAxis(1, 0, 0, 90);
             }
+            model.calculateTransforms();
             poiModel.setModel(model);
         }
 
diff --git a/vtm-gdx-poi3d/src/org/oscim/gdx/poi3d/GdxRenderer3D2.java b/vtm-gdx-poi3d/src/org/oscim/gdx/poi3d/GdxRenderer3D2.java
index 0ab4a9da..b14b0544 100644
--- a/vtm-gdx-poi3d/src/org/oscim/gdx/poi3d/GdxRenderer3D2.java
+++ b/vtm-gdx-poi3d/src/org/oscim/gdx/poi3d/GdxRenderer3D2.java
@@ -116,8 +116,9 @@ public class GdxRenderer3D2 extends LayerRenderer {
         GLState.test(false, false);
         GLState.blend(false);
 
-        // GL.cullFace(GL20.BACK);
-        // GL.frontFace(GL20.CW);
+        //gl.cullFace(GL.BACK);
+        /* flip front face cause of mirror inverted y-axis */
+        gl.frontFace(GL.CCW);
 
         cam.update(v);
         long time = System.currentTimeMillis();
@@ -160,6 +161,7 @@ public class GdxRenderer3D2 extends LayerRenderer {
 
         // GLUtils.checkGlError("<" + TAG);
 
+        gl.frontFace(GL.CW);
         gl.depthMask(false);
         GLState.bindElementBuffer(GLState.UNBIND);
         GLState.bindBuffer(GL.ARRAY_BUFFER, GLState.UNBIND);
diff --git a/vtm-gdx-poi3d/src/org/oscim/gdx/poi3d/Poi3DLayer.java b/vtm-gdx-poi3d/src/org/oscim/gdx/poi3d/Poi3DLayer.java
index a8935f5d..39c2fe09 100644
--- a/vtm-gdx-poi3d/src/org/oscim/gdx/poi3d/Poi3DLayer.java
+++ b/vtm-gdx-poi3d/src/org/oscim/gdx/poi3d/Poi3DLayer.java
@@ -1,6 +1,6 @@
 /*
  * Copyright 2014 Hannes Janetzek
- * Copyright 2018 Gustl22
+ * Copyright 2018-2019 Gustl22
  *
  * This program is free software: you can redistribute it and/or modify it under the
  * terms of the GNU Lesser General Public License as published by the Free Software
@@ -307,8 +307,10 @@ public class Poi3DLayer extends Layer implements Map.UpdateListener, ZoomLimiter
                         model.nodes.removeIndex(0);
                         model.nodes.add(node);
                     }
+                    node.scale.set(1, 1, -1);
                     node.rotation.setFromAxis(1, 0, 0, 90);
                 }
+                model.calculateTransforms();
                 holder.setModel(model);
             }
         }