From cd148cb3ff7674a5353f29dd81b4ec4dc810ffb8 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Vladim=C3=ADr=20Vondru=C5=A1?= <mosra@centrum.cz>
Date: Fri, 25 Jan 2013 15:10:08 +0100
Subject: [PATCH] Primitives: added crosshair primitive.

---
 src/Primitives/CMakeLists.txt |  2 ++
 src/Primitives/Crosshair.cpp  | 40 +++++++++++++++++++++++++
 src/Primitives/Crosshair.h    | 56 +++++++++++++++++++++++++++++++++++
 3 files changed, 98 insertions(+)
 create mode 100644 src/Primitives/Crosshair.cpp
 create mode 100644 src/Primitives/Crosshair.h

diff --git a/src/Primitives/CMakeLists.txt b/src/Primitives/CMakeLists.txt
index 10d36351e..189052ec1 100644
--- a/src/Primitives/CMakeLists.txt
+++ b/src/Primitives/CMakeLists.txt
@@ -1,5 +1,6 @@
 set(MagnumPrimitives_SRCS
     Capsule.cpp
+    Crosshair.cpp
     Cube.cpp
     Cylinder.cpp
     Icosphere.cpp
@@ -8,6 +9,7 @@ set(MagnumPrimitives_SRCS
     UVSphere.cpp)
 set(MagnumPrimitives_HEADERS
     Capsule.h
+    Crosshair.h
     Cube.h
     Cylinder.h
     Icosphere.h
diff --git a/src/Primitives/Crosshair.cpp b/src/Primitives/Crosshair.cpp
new file mode 100644
index 000000000..26b323d65
--- /dev/null
+++ b/src/Primitives/Crosshair.cpp
@@ -0,0 +1,40 @@
+/*
+    Copyright © 2010, 2011, 2012 Vladimír Vondruš <mosra@centrum.cz>
+
+    This file is part of Magnum.
+
+    Magnum is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Lesser General Public License version 3
+    only, as published by the Free Software Foundation.
+
+    Magnum is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+    GNU Lesser General Public License version 3 for more details.
+*/
+
+#include "Crosshair.h"
+
+#include "Math/Point2D.h"
+#include "Math/Point3D.h"
+#include "Trade/MeshData2D.h"
+#include "Trade/MeshData3D.h"
+
+namespace Magnum { namespace Primitives {
+
+Trade::MeshData2D Crosshair2D::wireframe() {
+    return Trade::MeshData2D(Mesh::Primitive::Lines, nullptr, {new std::vector<Point2D>{
+        {-1.0f,  0.0f}, {1.0f, 0.0f},
+        { 0.0f, -1.0f}, {0.0f, 1.0f}
+    }}, {});
+}
+
+Trade::MeshData3D Crosshair3D::wireframe() {
+    return Trade::MeshData3D(Mesh::Primitive::Lines, nullptr, {new std::vector<Point3D>{
+        {-1.0f,  0.0f,  0.0f}, {1.0f, 0.0f, 0.0f},
+        { 0.0f, -1.0f,  0.0f}, {0.0f, 1.0f, 0.0f},
+        { 0.0f,  0.0f, -1.0f}, {0.0f, 0.0f, 1.0f}
+    }}, {}, {});
+}
+
+}}
diff --git a/src/Primitives/Crosshair.h b/src/Primitives/Crosshair.h
new file mode 100644
index 000000000..55c9841ff
--- /dev/null
+++ b/src/Primitives/Crosshair.h
@@ -0,0 +1,56 @@
+#ifndef Magnum_Primitives_Cube_h
+#define Magnum_Primitives_Cube_h
+/*
+    Copyright © 2010, 2011, 2012 Vladimír Vondruš <mosra@centrum.cz>
+
+    This file is part of Magnum.
+
+    Magnum is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Lesser General Public License version 3
+    only, as published by the Free Software Foundation.
+
+    Magnum is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+    GNU Lesser General Public License version 3 for more details.
+*/
+
+/** @file
+ * @brief Class Magnum::Primitives::Crosshair2D, Magnum::Primitives::Crosshair3D
+ */
+
+#include "Trade/Trade.h"
+
+namespace Magnum { namespace Primitives {
+
+/**
+@brief 2D crosshair primitive
+
+2x2 wireframe crosshair (two crossed lines), non-indexed
+@ref Mesh::Primitive "Lines".
+*/
+class Crosshair2D {
+    public:
+        /** @brief Wireframe crosshair */
+        static Trade::MeshData2D wireframe();
+
+        Crosshair2D() = delete;
+};
+
+/**
+@brief 3D crosshair primitive
+
+2x2x2 wireframe crosshair (three crossed lines), non-indexed
+@ref Mesh::Primitive "Lines".
+*/
+class Crosshair3D {
+    public:
+        /** @brief Wireframe crosshair */
+        static Trade::MeshData3D wireframe();
+
+        Crosshair3D() = delete;
+};
+
+}}
+
+#endif