From c29bc5a684107737b60be1474e8bd6470ce4eae9 Mon Sep 17 00:00:00 2001
From: Tavian Barnes <tavianator@gmail.com>
Date: Fri, 10 Apr 2009 20:53:27 +0000
Subject: Wrote C++ geometry wrapper header.

---
 libdimensionxx/Makefile.am              |   2 +
 libdimensionxx/dimensionxx/geometry.hpp | 108 ++++++++++++++++++++++++++++++++
 2 files changed, 110 insertions(+)

(limited to 'libdimensionxx')

diff --git a/libdimensionxx/Makefile.am b/libdimensionxx/Makefile.am
index 60608e4..39687fe 100644
--- a/libdimensionxx/Makefile.am
+++ b/libdimensionxx/Makefile.am
@@ -19,6 +19,8 @@
 
 nobase_include_HEADERS = dimensionxx.hpp dimensionxx/geometry.hpp dimensionxx/color.hpp dimensionxx/canvas.hpp
 
+INCLUDES = -I../libdimension -I../libdimension-png
+
 lib_LTLIBRARIES = libdimensionxx.la
 
 libdimensionxx_la_SOURCES = dimensionxx.hpp dimensionxx/geometry.hpp dimensionxx/color.hpp dimensionxx/canvas.hpp canvas.cpp color.cpp geometry.cpp
diff --git a/libdimensionxx/dimensionxx/geometry.hpp b/libdimensionxx/dimensionxx/geometry.hpp
index 2ed576b..647bf24 100644
--- a/libdimensionxx/dimensionxx/geometry.hpp
+++ b/libdimensionxx/dimensionxx/geometry.hpp
@@ -21,8 +21,116 @@
 #ifndef DIMENSIONXX_GEOMETRY_HPP
 #define DIMENSIONXX_GEOMETRY_HPP
 
+#include <dimension.h>
+
 namespace dimension
 {
+  typedef dmnsn_scalar scalar;
+
+  class vector
+  {
+  public:
+    vector() { }
+    vector(scalar x, scalar y, scalar z)
+      : m_vector(dmnsn_vector_construct(x, y, z)) { }
+    explicit vector(dmnsn_vector v) : m_vector(v) { }
+    // vector(const vector& v);
+    // ~vector();
+
+    scalar x() const { return m_vector.x; }
+    scalar y() const { return m_vector.y; }
+    scalar z() const { return m_vector.z; }
+
+    // vector& operator=(const vector& rhs);
+    vector& operator+=(const vector& rhs)
+      { m_vector = dmnsn_vector_add(m_vector, rhs.m_vector); return *this; }
+    vector& operator-=(const vector& rhs)
+      { m_vector = dmnsn_vector_sub(m_vector, rhs.m_vector); return *this; }
+    vector& operator*=(scalar rhs)
+      { m_vector = dmnsn_vector_mul(rhs, m_vector); return *this; }
+    vector& operator/=(scalar rhs)
+      { m_vector = dmnsn_vector_div(m_vector, rhs); return *this; }
+
+    dmnsn_vector dmnsn() const { return m_vector; }
+
+  private:
+    dmnsn_vector m_vector;
+  };
+
+  class line
+  {
+  public:
+    line() { }
+    line(const vector& x0, const vector& n)
+      { m_line.x0 = x0.dmnsn(); m_line.n = n.dmnsn(); }
+    // line(const line& l);
+    // ~line();
+
+    vector x0() const { return vector(m_line.x0); }
+    vector n()  const { return vector(m_line.n); }
+
+    // line& operator=(const line& l);
+    vector operator()(scalar t) { return vector(dmnsn_line_point(m_line, t)); }
+
+    dmnsn_line dmnsn() const { return m_line; }
+
+  private:
+    dmnsn_line m_line;
+  };
+
+  // Vector operators
+
+  inline vector
+  operator+(const vector& lhs, const vector& rhs)
+  {
+    vector r = lhs;
+    r += rhs;
+    return r;
+  }
+
+  inline vector
+  operator-(const vector& lhs, const vector& rhs)
+  {
+    vector r = lhs;
+    r -= rhs;
+    return r;
+  }
+
+  inline vector
+  operator*(const vector& lhs, scalar rhs)
+  {
+    vector r = lhs;
+    r *= rhs;
+    return r;
+  }
+
+  inline vector
+  operator*(scalar lhs, const vector& rhs)
+  {
+    vector r = rhs;
+    r *= lhs;
+    return r;
+  }
+
+  inline vector
+  operator/(const vector& lhs, scalar rhs)
+  {
+    vector r = lhs;
+    r /= rhs;
+    return r;
+  }
+
+  inline scalar
+  dot(const vector& lhs, const vector& rhs)
+  {
+    return dmnsn_vector_dot(lhs.dmnsn(), rhs.dmnsn());
+  }
+
+  inline vector
+  cross(const vector& lhs, const vector& rhs)
+  {
+    return vector(dmnsn_vector_cross(lhs.dmnsn(), rhs.dmnsn()));
+  }
 }
 
 #endif /* DIMENSIONXX_GEOMETRY_HPP */
-- 
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