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/*==LICENSE==*
CyanWorlds.com Engine - MMOG client, server and tools
Copyright (C) 2011 Cyan Worlds, Inc.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
You can contact Cyan Worlds, Inc. by email legal@cyan.com
or by snail mail at:
Cyan Worlds, Inc.
14617 N Newport Hwy
Mead, WA 99021
*==LICENSE==*/
#ifndef plIsect_inc
#define plIsect_inc
struct hsPoint3;
struct hsVector3;
class plClosest
{
public:
enum plClosestClampFlags
{
kClampLower0 = 0x1,
kClampUpper0 = 0x2,
kClamp0 = kClampLower0 | kClampUpper0,
kClampLower1 = 0x4,
kClampLower = kClampLower0 | kClampLower1,
kClampUpper1 = 0x8,
kClampUpper = kClampUpper0 | kClampUpper1,
kClamp1 = kClampLower1 | kClampUpper1,
kClamp = kClamp0 | kClamp1
};
// Return clamp flags for where clamped
static UInt32 PointOnLine(const hsPoint3& p0, // Point
const hsPoint3& p1, const hsVector3& v1, // Line
hsPoint3& cp, // Output closest point on line to p0
UInt32 clamp); // Clamp on ends of segment (use Lower1/Upper1)
// Return clamp flags for where clamped
static UInt32 PointsOnLines(const hsPoint3& p0, const hsVector3& v0,// First line
const hsPoint3& p1, const hsVector3& v1, // Second line
hsPoint3& cp0, // Output closest on line0 to line1
hsPoint3& cp1, // Output closest on line1 to line0
UInt32 clamp); // Clamp on ends
// Return true if p0 is inside or on sphere.
static hsBool PointOnSphere(const hsPoint3& p0, // Point
const hsPoint3& center, hsScalar rad, // Sphere
hsPoint3& cp); // Output closest on sphere to p0
// Return true if p0 is inside box.
static hsBool PointOnBox(const hsPoint3& p0, // Point
const hsPoint3& corner, // Box defined by corner point and 3 (presumably but
const hsVector3& axis0, // not required) ortho axes.
const hsVector3& axis1,
const hsVector3& axis2,
hsPoint3& cp);
// Return true if line intersects or is inside sphere.
static hsBool PointOnSphere(const hsPoint3& p0, const hsVector3& v0, // Line
const hsPoint3& center, hsScalar rad, // Sphere
hsPoint3& cp, // Output closest on sphere to p0, or entry point if line hits sphere
UInt32 clamp);
// Return true if line intersects or is inside box.
static hsBool PointOnBox(const hsPoint3& p0, const hsVector3& v0, // Line
const hsPoint3& corner, // Box defined by corner point and 3 (presumably but
const hsVector3& axis0, // not required) ortho axes.
const hsVector3& axis1,
const hsVector3& axis2,
hsPoint3& cp,
UInt32 clamp);
// Return true if point inside (negative side) of plane
static hsBool PointOnPlane(const hsPoint3& p0,
const hsPoint3& pPln, const hsVector3& n,
hsPoint3& cp);
// Return true if line passes through plane.
static hsBool PointOnPlane(const hsPoint3& p0, const hsVector3& v0,
const hsPoint3& pPln, const hsVector3& n,
hsPoint3& cp,
UInt32 clamp);
// Two identical functions, just different wrapping. First version repacks
// parameters and calls second.
static hsBool PointBetweenBoxes(const hsPoint3& aCorner,
const hsVector3& aAxis0,
const hsVector3& aAxis1,
const hsVector3& aAxis2,
const hsPoint3& bCorner,
const hsVector3& bAxis0,
const hsVector3& bAxis1,
const hsVector3& bAxis2,
hsPoint3& cp0, hsPoint3& cp1);
static hsBool PointBetweenBoxes(const hsPoint3& aCorner,
const hsVector3* aAxes[3],
const hsPoint3& bCorner,
const hsVector3* bAxes[3],
hsPoint3& cp0, hsPoint3& cp1);
};
#endif // plVolume_inc