improved matrices, cube building and command parsing

2 files changed, 25 insertions, 0 deletions

diff --git a/src/o3d/obj3d.cpp b/src/o3d/obj3d.cpp
index 46f4db6..584e304 100644
--- a/src/o3d/obj3d.cpp
+++ b/src/o3d/obj3d.cpp
@@ -34,6 +34,29 @@ Object3D::TriangleVertex3Iterator::reference Object3D::TriangleVertex3Iterator::
     };
 }
 
+Object3D Object3D::cube() {
+    return {
+        {
+            { MathVector3(-1.f, -1.f, -1.f), {} },
+            { MathVector3(+1.f, -1.f, -1.f), {} },
+            { MathVector3(-1.f, +1.f, -1.f), {} },
+            { MathVector3(+1.f, +1.f, -1.f), {} },
+            { MathVector3(-1.f, -1.f, +1.f), {} },
+            { MathVector3(+1.f, -1.f, +1.f), {} },
+            { MathVector3(-1.f, +1.f, +1.f), {} },
+            { MathVector3(+1.f, +1.f, +1.f), {} },
+        },
+        {
+            { 0, 2, 3 }, { 0, 3, 1 }, // face 1
+            { 0, 4, 6 }, { 0, 6, 2 }, // face 2
+            { 0, 1, 5 }, { 0, 5, 4 }, // face 3
+            { 7, 6, 4 }, { 7, 4, 5 }, // face 4
+            { 7, 3, 2 }, { 7, 2, 6 }, // face 5
+            { 7, 5, 1 }, { 7, 1, 3 }, // face 6
+        }
+    };
+}
+
 Object3D::Object3D(std::vector<Vertex3> pts, std::vector<std::array<int, 3>> faces) : pts{pts}, faces{faces} {
 }
 
diff --git a/src/o3d/obj3d.h b/src/o3d/obj3d.h
index 559ed63..c65a06b 100644
--- a/src/o3d/obj3d.h
+++ b/src/o3d/obj3d.h
@@ -30,6 +30,8 @@ class Object3D {
 
         };
 
+        static Object3D cube(); // this function should not be in this file
+
         Object3D(std::vector<Vertex3> pts, std::vector<std::array<int, 3>> faces);
         TriangleVertex3Iterator begin();
         TriangleVertex3Iterator end();