diff --git a/src/mesh.cpp b/src/mesh.cpp
index 8bc92f4..a538c5e 100644
--- a/src/mesh.cpp
+++ b/src/mesh.cpp
@@ -257,9 +257,9 @@ struct VertexComparator
             return (mesh->positions3D[vertId1].z < mesh->positions3D[vertId2].z);
         if(!mesh->texCoords.empty())
         {
-            if(mesh->texCoords[vertId1].x != mesh->texCoords[vertId2].x)
+            if(mesh->texCoords[vertId1].x - floor(mesh->texCoords[vertId1].x) != mesh->texCoords[vertId2].x - floor(mesh->texCoords[vertId2].x))
                 return (mesh->texCoords[vertId1].x < mesh->texCoords[vertId2].x);
-            if(mesh->texCoords[vertId1].y != mesh->texCoords[vertId2].y)
+            if(mesh->texCoords[vertId1].y - floor(mesh->texCoords[vertId1].y) != mesh->texCoords[vertId2].y - floor(mesh->texCoords[vertId2].y))
                 return (mesh->texCoords[vertId1].y < mesh->texCoords[vertId2].y);
         }
         if(!mesh->normals.empty())
diff --git a/src/parametricmesh.cpp b/src/parametricmesh.cpp
index 67116cf..d9a2094 100644
--- a/src/parametricmesh.cpp
+++ b/src/parametricmesh.cpp
@@ -67,12 +67,12 @@ Mesh* MeshGenerator::generateGeodesicMesh(Material* mat, int n, float size)
         int bottom = 7;
         int offset = (i+1)%5;
         // top cap
-		m_mesh->addTriangle(0, top+i, top+offset);
+		m_mesh->addTriangle(0, top+offset, top+i);
         // bottom cap
-		m_mesh->addTriangle(6, bottom+offset, bottom+i);
+		m_mesh->addTriangle(6, bottom+i, bottom+offset);
         // middle ribbon
-		m_mesh->addTriangle(top+i, bottom+i, top+offset);
-		m_mesh->addTriangle(top+offset, bottom+i, bottom+offset);
+		m_mesh->addTriangle(top+i, top+offset, bottom+i);
+		m_mesh->addTriangle(top+offset, bottom+offset, bottom+i);
     }
 
     // geodesic subdivisions :
@@ -99,15 +99,16 @@ int MeshGenerator::getEdge(int a, int b)
         {
 			vid = m_mesh->positions3D.size();
 			// creating subdivision vertex
-			glm::vec3 pos = glm::normalize(m_mesh->positions3D[a] + m_mesh->positions3D[b] / 2.f);
-
+			
             // u/v sphériques, cohérents sur toute la sphère sauf des artefacts au niveau des u==0
+            glm::vec3 pos = glm::normalize((m_mesh->positions3D[a] + m_mesh->positions3D[b]) / 2.f);
 			float newU = (pos.x < 0 ? 1.5f : 1.f) + atan(pos.z/pos.x)/(2*M_PI);
 			float newV = acos(pos.y)/M_PI;
-			createVertex(newU - floor(newU), newV);
             // alternative, u/v moyennés :
-            //v.texCoord = (v0.texCoord + v1.texCoord)/2.f;
-
+            /*float newU = (m_mesh->texCoords[a].x + m_mesh->texCoords[b].x) / 2.f;
+			float newV = (m_mesh->texCoords[a].y + m_mesh->texCoords[b].y) / 2.f;*/
+            createVertex(-(newU - floor(newU)), newV);
+            
             // inserting the new vertex in the edge collection
             if(current->b == -1)
             {
diff --git a/src/parametricmesh.h b/src/parametricmesh.h
index d484221..ac0d021 100644
--- a/src/parametricmesh.h
+++ b/src/parametricmesh.h
@@ -55,7 +55,7 @@ class GridGenerator : public MeshGenerator
 {
 public:
     virtual glm::vec3 evalUV(float u, float v)
-        {return glm::vec3(u-0.5f, 0, v-0.5f);}
+        {return glm::vec3(u*2-1, 0, v*2-1);}
 };
 
 /**
@@ -65,17 +65,17 @@ class CylinderGenerator : public MeshGenerator
 {
 public:
     virtual glm::vec3 evalUV(float u, float v)
-        {return glm::vec3(cos(u*6.2832f), v-0.5f, sin(u*6.2832f));}
+        {return glm::vec3(cos(u*6.2832f), v*2-1, sin(u*6.2832f));}
 };
 
 /**
- * @brief The ConeGenerator class creates an open cone pointing down
+ * @brief The ConeGenerator class creates an open cone pointing up
  */
 class ConeGenerator : public MeshGenerator
 {
 public:
     virtual glm::vec3 evalUV(float u, float v)
-        {return glm::vec3(cos(u*6.2832f)*v, v, sin(u*6.2832f)*v);}
+        {return glm::vec3(cos(-u*6.2832f)*v, 1 - v*2, sin(-u*6.2832f)*v);}
 };
 
 /**
@@ -88,7 +88,7 @@ public:
     virtual glm::vec3 evalUV(float u, float v)
     {
         float r = sin(v*3.1416f);
-        return glm::vec3(cos(u*6.2832f)*r, cos(v*3.1416f), sin(u*6.2832f)*r);
+        return glm::vec3(cos(-u*6.2832f)*r, cos(v*3.1416f), sin(-u*6.2832f)*r);
     }
 };