Core/Misc: update g3dlite lib (#2904)
* Core/Misc: update g3dlite lib * update Co-authored-by: Francesco Borzì <borzifrancesco@gmail.com>
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Viste
Vendored
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@@ -1,20 +1,20 @@
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/**
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@file Box.h
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\file G3D/Box.h
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Box class
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@maintainer Morgan McGuire, http://graphics.cs.williams.edu
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\maintainer Morgan McGuire, http://graphics.cs.williams.edu
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@cite Portions based on Dave Eberly's Magic Software Library at <A HREF="http://www.magic-software.com">http://www.magic-software.com</A>
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@created 2001-06-02
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@edited 2007-06-05
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\cite Portions based on Dave Eberly's Magic Software Library at <A HREF="http://www.magic-software.com">http://www.magic-software.com</A>
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\created 2001-06-02
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\edited 2013-04-13
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Copyright 2000-2006, Morgan McGuire.
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Copyright 2000-2013, Morgan McGuire.
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All rights reserved.
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*/
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#ifndef G3D_BOX_H
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#define G3D_BOX_H
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#ifndef G3D_Box_h
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#define G3D_Box_h
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#include "G3D/platform.h"
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#include "G3D/Vector3.h"
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@@ -24,13 +24,12 @@
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namespace G3D {
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class CoordinateFrame;
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class Any;
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/**
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An arbitrary 3D box, useful as a bounding box.
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To construct a box from a coordinate frame, center and extent, use the idiom:
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\brief An arbitrary (oriented) 3D box, useful as a bounding box.
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To construct a box from a coordinate frame, center and extent, use the idiom:
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<CODE>Box box = cframe.toObjectSpace(Box(center - extent/2, center + extent/2));</CODE>
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*/
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class Box {
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@@ -41,29 +40,14 @@ private:
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friend class CoordinateFrame;
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/**
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<PRE>
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3 2 7 6
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0 1 4 5
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front back (seen through front)
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</PRE>
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Axes with length equal to the 4 edges that run along each of them
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*/
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Vector3 _corner[8];
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/**
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Unit axes.
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*/
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Vector3 _axis[3];
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Vector3 _edgeVector[3];
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Vector3 _center;
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/**
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Extent along each axis.
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*/
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Vector3 _extent;
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Point3 _center;
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float _area;
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float _volume;
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void init(
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@@ -72,38 +56,47 @@ private:
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public:
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/**
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Does not initialize the fields.
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*/
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Box();
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explicit Box(const Any& a);
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/**
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Constructs a box from two opposite corners.
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*/
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Box(
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const Vector3& min,
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Box(const Vector3& min,
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const Vector3& max);
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static Box inf();
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Box(const Vector3& osMin,
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const Vector3& osMax,
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const CoordinateFrame& frame);
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Box(class BinaryInput& b);
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Box(class BinaryInput& b);
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Box(const class AABox& b);
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void serialize(class BinaryOutput& b) const;
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void deserialize(class BinaryInput& b);
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explicit Box(const Point3& p);
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static Box inf();
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Any toAny() const;
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void serialize(class BinaryOutput& b) const;
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void deserialize(class BinaryInput& b);
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/**
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Returns the object to world transformation for
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this box. localFrame().worldToObject(...) takes
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this box, where the origin is the center of the box. localFrame().worldToObject(...) takes
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objects into the space where the box axes are
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(1,0,0), (0,1,0), (0,0,1). Note that there
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is no scaling in this transformation.
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*/
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CoordinateFrame localFrame() const;
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/** \sa localFrame */
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void getLocalFrame(CoordinateFrame& frame) const;
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Box operator*(float f) const;
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/**
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Returns the centroid of the box.
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*/
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@@ -111,18 +104,39 @@ public:
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return _center;
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}
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/**
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\htmlonly
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<PRE>
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inline Vector3 corner(int i) const {
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debugAssert(i < 8);
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return _corner[i];
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}
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2--------3
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/ : /|
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/ : / |
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6--------7 |
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| : | |
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| 0....|..1
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| / | /
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|/ |/
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4--------5
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y
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^
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|-->x
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z/
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</PRE>
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\endhtmlonly
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*/
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Vector3 corner(int i) const;
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/**
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Unit length.
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*/
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inline Vector3 axis(int a) const {
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debugAssert(a < 3);
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return _axis[a];
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return _edgeVector[a].direction();
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}
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/**
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@@ -131,17 +145,43 @@ public:
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*/
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inline float extent(int a) const {
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debugAssert(a < 3);
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return (float)_extent[a];
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return _edgeVector[a].length();
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}
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inline Vector3 extent() const {
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return _extent;
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return Vector3(_edgeVector[0].length(), _edgeVector[1].length(), _edgeVector[2].length());
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}
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/**
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Returns the four corners of a face (0 <= f < 6).
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The corners are returned to form a counter clockwise quad facing outwards.
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*/
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The corners are returned to form a clockwise quad facing outwards.
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+--------+
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/ : /|
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/ : / |
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+--------+ |
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| : | |
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| +....|..+
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| / | /
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|/ |/
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+--------+
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y
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^
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|-->x
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z/
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Faces are in the following order:
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0: -Z
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1: X
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2: Z
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3: Y
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4: -X
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5: -Y
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*/
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void getFaceCorners(
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int f,
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Vector3& v0,
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@@ -150,24 +190,24 @@ public:
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Vector3& v3) const;
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/**
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/**
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See AABox::culledBy
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*/
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*/
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bool culledBy
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(
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const Array<Plane>& plane,
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int32& cullingPlaneIndex,
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const uint32 testMask,
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uint32& childMask) const;
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const Array<Plane>& plane,
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int32& cullingPlaneIndex,
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const uint32 testMask,
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uint32& childMask) const;
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/**
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Conservative culling test that does not produce a mask for children.
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*/
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bool culledBy
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(
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const Array<Plane>& plane,
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int32& cullingPlaneIndex = dummy,
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const uint32 testMask = -1) const;
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const Array<Plane>& plane,
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int32& cullingPlaneIndex = dummy,
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const uint32 testMask = -1) const;
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bool contains(
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const Vector3& point) const;
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