From f91ff9e68b6332ce6ca1903fed4f7a17f6e5c80d Mon Sep 17 00:00:00 2001
From: madmaxoft <github@xoft.cz>
Date: Sun, 1 Sep 2013 12:25:53 +0200
Subject: Added the cBoundingBox class.

---
 source/BoundingBox.cpp | 195 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 195 insertions(+)
 create mode 100644 source/BoundingBox.cpp

(limited to 'source/BoundingBox.cpp')

diff --git a/source/BoundingBox.cpp b/source/BoundingBox.cpp
new file mode 100644
index 000000000..9af726223
--- /dev/null
+++ b/source/BoundingBox.cpp
@@ -0,0 +1,195 @@
+
+// BoundingBox.cpp
+
+// Implements the cBoundingBox class representing an axis-aligned bounding box with floatingpoint coords
+
+#include "Globals.h"
+#include "BoundingBox.h"
+
+
+
+
+
+cBoundingBox::cBoundingBox(double a_MinX, double a_MaxX, double a_MinY, double a_MaxY, double a_MinZ, double a_MaxZ) :
+	m_Min(a_MinX, a_MinY, a_MinZ),
+	m_Max(a_MaxX, a_MaxY, a_MaxZ)
+{
+}
+
+
+
+
+
+cBoundingBox::cBoundingBox(const Vector3d & a_Min, const Vector3d & a_Max) :
+	m_Min(a_Min),
+	m_Max(a_Max)
+{
+}
+
+
+
+
+
+cBoundingBox::cBoundingBox(const Vector3d & a_Pos, double a_Radius, double a_Height) :
+	m_Min(a_Pos.x - a_Radius, a_Pos.y,            a_Pos.z - a_Radius),
+	m_Max(a_Pos.x + a_Radius, a_Pos.y + a_Height, a_Pos.z + a_Radius)
+{
+}
+
+
+
+
+
+cBoundingBox::cBoundingBox(const cBoundingBox & a_Orig) :
+	m_Min(a_Orig.m_Min),
+	m_Max(a_Orig.m_Max)
+{
+}
+
+
+
+
+
+void cBoundingBox::Move(double a_OffX, double a_OffY, double a_OffZ)
+{
+	m_Min.x += a_OffX;
+	m_Min.y += a_OffY;
+	m_Min.z += a_OffZ;
+	m_Max.x += a_OffX;
+	m_Max.y += a_OffY;
+	m_Max.z += a_OffZ;
+}
+
+
+
+
+
+void cBoundingBox::Move(const Vector3d & a_Off)
+{
+	m_Min.x += a_Off.x;
+	m_Min.y += a_Off.y;
+	m_Min.z += a_Off.z;
+	m_Max.x += a_Off.x;
+	m_Max.y += a_Off.y;
+	m_Max.z += a_Off.z;
+}
+
+
+
+
+
+void cBoundingBox::Expand(double a_ExpandX, double a_ExpandY, double a_ExpandZ)
+{
+	m_Min.x -= a_ExpandX;
+	m_Min.y -= a_ExpandY;
+	m_Min.z -= a_ExpandZ;
+	m_Max.x += a_ExpandX;
+	m_Max.y += a_ExpandY;
+	m_Max.z += a_ExpandZ;
+}
+
+
+
+
+
+bool cBoundingBox::DoesIntersect(const cBoundingBox & a_Other)
+{
+	return (
+		((a_Other.m_Min.x < m_Max.x) && (a_Other.m_Max.x > m_Min.x)) &&  // X coords intersect
+		((a_Other.m_Min.y < m_Max.y) && (a_Other.m_Max.y > m_Min.y)) &&  // Y coords intersect
+		((a_Other.m_Min.z < m_Max.z) && (a_Other.m_Max.z > m_Min.z))     // Z coords intersect
+	);
+}
+
+
+
+
+
+cBoundingBox cBoundingBox::Union(const cBoundingBox & a_Other)
+{
+	return cBoundingBox(
+		std::min(m_Min.x, a_Other.m_Min.x),
+		std::min(m_Min.y, a_Other.m_Min.y),
+		std::min(m_Min.z, a_Other.m_Min.z),
+		std::max(m_Max.x, a_Other.m_Max.x),
+		std::max(m_Max.y, a_Other.m_Max.y),
+		std::max(m_Max.z, a_Other.m_Max.z)
+	);
+}
+
+
+
+
+
+bool cBoundingBox::IsInside(const Vector3d & a_Point)
+{
+	return (
+		((a_Point.x >= m_Min.x) && (a_Point.x < m_Max.x)) &&
+		((a_Point.y >= m_Min.y) && (a_Point.y < m_Max.y)) &&
+		((a_Point.z >= m_Min.z) && (a_Point.z < m_Max.z))
+	);
+}
+
+
+
+
+
+bool cBoundingBox::IsInside(double a_X, double a_Y,double a_Z)
+{
+	return (
+		((a_X >= m_Min.x) && (a_X < m_Max.x)) &&
+		((a_Y >= m_Min.y) && (a_Y < m_Max.y)) &&
+		((a_Z >= m_Min.z) && (a_Z < m_Max.z))
+	);
+}
+
+
+
+
+
+bool cBoundingBox::IsInside(cBoundingBox & a_Other)
+{
+	// If both a_Other's coords are inside this, then the entire a_Other is inside
+	return (IsInside(a_Other.m_Min) && IsInside(a_Other.m_Max));
+}
+
+
+
+
+
+bool cBoundingBox::IsInside(const Vector3d & a_Min, const Vector3d & a_Max)
+{
+	// If both coords are inside this, then the entire a_Other is inside
+	return (IsInside(a_Min) && IsInside(a_Max));
+}
+
+
+
+
+
+bool cBoundingBox::Intersect(const cBoundingBox & a_Other, cBoundingBox & a_Intersection)
+{
+	a_Intersection.m_Min.x = std::max(m_Min.x, a_Other.m_Min.x);
+	a_Intersection.m_Max.x = std::min(m_Max.x, a_Other.m_Max.x);
+	if (a_Intersection.m_Min.x >= a_Intersection.m_Max.x)
+	{
+		return false;
+	}
+	a_Intersection.m_Min.y = std::max(m_Min.y, a_Other.m_Min.y);
+	a_Intersection.m_Max.y = std::min(m_Max.y, a_Other.m_Max.y);
+	if (a_Intersection.m_Min.y >= a_Intersection.m_Max.y)
+	{
+		return false;
+	}
+	a_Intersection.m_Min.z = std::max(m_Min.z, a_Other.m_Min.z);
+	a_Intersection.m_Max.z = std::min(m_Max.z, a_Other.m_Max.z);
+	if (a_Intersection.m_Min.z >= a_Intersection.m_Max.z)
+	{
+		return false;
+	}
+	return true;
+}
+
+
+
+
-- 
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