mirror of
https://github.com/mangosfour/server.git
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ae3ad10bcf
+ Got rid of zip lib requirement in G3D...
Still can re-enable code by defining _HAVE_ZIP...
+ Remove silly X11 lib dependency from G3D
Code doesn't seem to do anything yet anyway, and even if, we don't want it :p
+ Fix another weird G3D build problem...
+ Remove some __asm usage in g3d, which is not available on Win64
My editor also decided to remove a ton of trailing white spaces...tss...
+ Reapply G3D fixes for 64bit VC
+ not use SSE specific header when SSE not enabled in *nix
+ Updated project files
+ New vmap_assembler VC90/VC80 Project
+ vmap assembler binaries updates
NOTE: Old vmap fikes expected work (as tests show) with new library version.
But better use new generated versions. Its different in small parts to bad or good...
(based on Lynx3d's repo commit 44798d3)
Signed-off-by: VladimirMangos <vladimir@getmangos.com>
121 lines
3 KiB
C++
121 lines
3 KiB
C++
/**
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@file Box2D.h
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@maintainer Morgan McGuire, http://graphics.cs.williams.edu
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@created 2001-06-02
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@edited 2008-12-27
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Copyright 2000-2009, Morgan McGuire.
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All rights reserved.
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*/
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#ifndef G3D_Box2D_h
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#define G3D_Box2D_h
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#include "G3D/platform.h"
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#include "G3D/Vector2.h"
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namespace G3D {
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class CoordinateFrame;
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typedef class CoordinateFrame CFrame;
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class Rect2D;
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typedef class Rect2D AABox2D;
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/**
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2D oriented box
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@cite http://www.flipcode.com/archives/2D_OBB_Intersection.shtml
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*/
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class Box2D {
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private:
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/** Corners of the box, where 0 is the lower left. */
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Vector2 m_corner[4];
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/** Two edges of the box extended away from corner[0], with length
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= 1 / extentSquared */
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Vector2 m_axisin[2];
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/** Two edges of the box extended away from corner[0], with unit length */
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Vector2 m_axis[2];
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/** Centroid of the box */
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Vector2 m_center;
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/** origin[a] = m_corner[0].dot(m_axisin[a]); */
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float origin[2];
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/** Surface area */
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float m_area;
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Vector2 m_extent;
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/** Returns true if other overlaps one dimension of this. */
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bool overlaps1Way(const Box2D& other) const;
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/** Updates the axes after the m_corners move. Assumes the
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m_corners actually form a rectangle. */
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void computeAxes();
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public:
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/**
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@param center World-space center
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@param w Width along object-space x-axis
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@param h Height along object-space y-axis
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@param angle Counter-clockwise angle from object-space x-axis in radians
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*/
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Box2D(const Vector2& center = Vector2(0, 0), float w = 0, float h = 0, float angle = 0);
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Box2D(const AABox2D& b);
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Box2D(const Vector2& min, const Vector2& max);
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/** Transform @a b by @a frame, discarding the Z components, and
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compute the new box.*/
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Box2D(const CFrame& frame, Box2D& b);
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inline bool contains(const Vector2& v) const {
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// Take to object space:
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const Vector2& p = v - m_center;
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float x = p.dot(m_axisin[0]);
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float y = p.dot(m_axisin[1]);
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// Must be within extent/2 on both axes in object space
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return (abs(x) <= 0.5f) && (abs(y) <= 0.5f);
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}
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/** @brief Distance from corner(0) to the next corner along the box's local axis a. */
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inline const Vector2& extent() const {
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return m_extent;
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}
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/** @brief Unit length vector along axis @a a */
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inline const Vector2& axis(int a) const {
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debugAssert(a == 0 || a == 1);
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return m_axis[a];
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}
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/** @brief Surface area */
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inline float area() const {
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return m_area;
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}
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inline const Vector2& corner(int i) const {
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debugAssert(i >=0 && i <= 3);
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return m_corner[i];
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}
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inline const Vector2& center() const {
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return m_center;
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}
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/** Returns true if the intersection of the boxes is non-empty. */
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inline bool overlaps(const Box2D& other) const {
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return overlaps1Way(other) && other.overlaps1Way(*this);
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}
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};
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} // G3D
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#endif
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