CydandClaude Opus 4.8
4abbf8879f
Imports the current Win32 source for the pod-racing game 'Red Planet', built on the MUNGA engine and its L4 (Win32/DirectX) platform layer: - MUNGA / MUNGA_L4: cross-platform engine core and Win32 backend - RP / RP_L4: Red Planet game logic and Win32 application - DivLoader, Setup1: asset loader and installer project - lib, MUNGA_L4/openal, MUNGA_L4/sos: third-party audio dependencies Removed stale Subversion metadata and added .gitignore/.gitattributes. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
873 lines
25 KiB
C++
873 lines
25 KiB
C++
#include "munga.h"
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#pragma hdrstop
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#include "boxsolid.h"
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#include "plane.h"
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extern Logical
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BoxedRampContainsLine(
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Line *line,
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const Plane& plane,
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Scalar enters,
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Scalar leaves
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);
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//#############################################################################
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//################# BoxedWedgeFacingNegativeZAndPositiveX ###############
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//#############################################################################
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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//
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BoxedWedgeFacingNegativeZAndPositiveX::BoxedWedgeFacingNegativeZAndPositiveX(
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const ExtentBox &extents,
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BoxedSolid::Material material,
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Simulation *owner,
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BoxedSolid *next_solid
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):
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BoxedSolid(
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extents,
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WedgeFacingNegativeZAndPositiveXType,
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material,
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owner,
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next_solid
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)
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{
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Check_Pointer(this);
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}
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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//
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BoxedWedgeFacingNegativeZAndPositiveX::~BoxedWedgeFacingNegativeZAndPositiveX()
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{
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Check_Pointer(this);
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}
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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//
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Logical
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BoxedWedgeFacingNegativeZAndPositiveX::IntersectsBounded(
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const ExtentBox &extents
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)
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{
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Check(this);
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Check(&extents);
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Verify(minX <= extents.minX);
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Verify(maxX >= extents.maxX);
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Verify(minY <= extents.minY);
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Verify(maxY >= extents.maxY);
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Verify(minZ <= extents.minZ);
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Verify(maxZ >= extents.maxZ);
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//
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//----------------------------------------------------------------------
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// Calculate the "slope" of the ramp when the base of the ramp is placed
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// at the origin
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//----------------------------------------------------------------------
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//
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Scalar run = maxX - minX;
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Scalar rise = maxZ - minZ;
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Verify(!Small_Enough(run));
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//
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//-------------------------------------------------------------------
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// Calculate the "slope" of the line from the base of the ramp to the
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// lower-north edge of the block
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//-------------------------------------------------------------------
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//
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Scalar x = extents.maxX - minX;
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Scalar z = extents.minZ - minZ;
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//
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//------------------------------------------------------------------------
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// If the slope rise/run is more positive than z/x slope, then the extent
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// box of the disk has clipped the ramp. Note that rise/run >= z/x yields
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// rise*x >= z*run, which avoids any divide-by-0 errors.
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//------------------------------------------------------------------------
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//
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return x*rise >= z*run;
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}
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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//
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Logical
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BoxedWedgeFacingNegativeZAndPositiveX::ContainsBounded(const Point3D &point)
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{
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Check(this);
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Check(&point);
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Verify(minX <= point.x);
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Verify(maxX >= point.x);
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Verify(minY <= point.y);
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Verify(maxY >= point.y);
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Verify(minZ <= point.z);
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Verify(maxZ >= point.z);
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//
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//----------------------------------------------------------------------
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// Calculate the "slope" of the ramp when the base of the ramp is placed
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// at the origin
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//----------------------------------------------------------------------
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//
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Scalar run = maxX - minX;
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Scalar rise = maxZ - minZ;
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Verify(!Small_Enough(run));
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//
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//-------------------------------------------------------------------
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// Calculate the "slope" of the line from the base of the ramp to the
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// lower-north edge of the block
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//-------------------------------------------------------------------
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//
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Scalar x = point.x - minX;
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Scalar z = point.z - minZ;
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//
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//------------------------------------------------------------------------
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// If the slope rise/run is more positive than z/x slope, then the extent
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// box of the disk has clipped the ramp. Note that rise/run >= z/x yields
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// rise*x >= z*run, which avoids any divide-by-0 errors.
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//------------------------------------------------------------------------
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//
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return x*rise >= z*run;
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}
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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//
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Scalar
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BoxedWedgeFacingNegativeZAndPositiveX::FindDistanceBelowBounded(
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const Point3D &point
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)
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{
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Check(this);
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Check(&point);
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Verify(minX <= point.x);
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Verify(maxX >= point.x);
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Verify(minY <= point.y);
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Verify(minZ <= point.z);
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Verify(maxZ >= point.z);
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//
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//------------------------------------------------------------------------
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// Calculate the "slope" of the ramp when the NW corner the ramp is placed
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// at the origin
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//------------------------------------------------------------------------
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//
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Scalar run = maxX - minX;
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Scalar rise = maxZ - minZ;
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Verify(!Small_Enough(run));
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//
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//-------------------------------------------------------------------
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// Calculate the "slope" of the line from the base of the ramp to the
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// lower-north edge of the block
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//-------------------------------------------------------------------
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//
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Scalar x = point.x - minX;
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Scalar z = point.z - minZ;
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//
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//------------------------------------------------------------------------
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// If the slope rise/run is more positive than z/x slope, then the extent
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// box of the disk has clipped the ramp. Note that rise/run >= z/x yields
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// rise*x >= z*run, which avoids any divide-by-0 errors.
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//------------------------------------------------------------------------
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//
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if (x*rise >= z*run)
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{
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x = point.y - maxY;
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return Max(x,0.0f);
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}
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return -1.0f;
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}
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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//
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Logical
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BoxedWedgeFacingNegativeZAndPositiveX::HitByBounded(
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Line *line,
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Scalar enters,
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Scalar leaves
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)
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{
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Plane
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ramp;
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ramp.normal.x = minZ - maxZ;
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ramp.normal.y = 0.0f;
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ramp.normal.z = maxX - minX;
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//
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//-----------------------------
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// Scale the vector to a normal
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//-----------------------------
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//
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Scalar temp = ramp.normal.x*ramp.normal.x + ramp.normal.z*ramp.normal.z;
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Verify(!Small_Enough(temp));
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temp = Sqrt(temp);
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ramp.normal.x /= temp;
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ramp.normal.z /= temp;
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ramp.offset = maxX*ramp.normal.x + maxZ*ramp.normal.z;
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//
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//---------------------------------------------------------------------
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// Now that we have added a new plane into the definition of the convex
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// polyhedron, call a common ramp line collider
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//---------------------------------------------------------------------
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//
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return BoxedRampContainsLine(line, ramp, enters, leaves);
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}
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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//
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Logical
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BoxedWedgeFacingNegativeZAndPositiveX::TestInstance() const
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{
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return solidType == WedgeFacingNegativeZAndPositiveXType;
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}
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//#############################################################################
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//################# BoxedWedgeFacingPositiveZAndNegativeX ###############
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//#############################################################################
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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//
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BoxedWedgeFacingPositiveZAndNegativeX::BoxedWedgeFacingPositiveZAndNegativeX(
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const ExtentBox &extents,
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BoxedSolid::Material material,
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Simulation *owner,
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BoxedSolid *next_solid
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):
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BoxedSolid(
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extents,
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WedgeFacingPositiveZAndNegativeXType,
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material,
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owner,
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next_solid
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)
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{
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Check_Pointer(this);
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}
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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//
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BoxedWedgeFacingPositiveZAndNegativeX::~BoxedWedgeFacingPositiveZAndNegativeX()
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{
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Check_Pointer(this);
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}
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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//
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Logical
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BoxedWedgeFacingPositiveZAndNegativeX::IntersectsBounded(
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const ExtentBox &extents
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)
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{
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Check(this);
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Check(&extents);
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Verify(minX <= extents.minX);
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Verify(maxX >= extents.maxX);
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Verify(minY <= extents.minY);
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Verify(maxY >= extents.maxY);
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Verify(minZ <= extents.minZ);
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Verify(maxZ >= extents.maxZ);
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//
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//----------------------------------------------------------------------
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// Calculate the "slope" of the ramp when the base of the ramp is placed
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// at the origin
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//----------------------------------------------------------------------
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//
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Scalar run = minX - maxX;
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Scalar rise = minZ - maxZ;
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Verify(!Small_Enough(run));
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//
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//-------------------------------------------------------------------
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// Calculate the "slope" of the line from the base of the ramp to the
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// lower-north edge of the block
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//-------------------------------------------------------------------
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//
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Scalar x = extents.minX - maxX;
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Scalar z = extents.maxZ - maxZ;
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//
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//------------------------------------------------------------------------
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// If the slope rise/run is more positive than z/x slope, then the extent
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// box of the disk has clipped the ramp. Note that rise/run >= z/x yields
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// rise*x >= z*run, which avoids any divide-by-0 errors.
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//------------------------------------------------------------------------
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//
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return x*rise >= z*run;
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}
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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//
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Logical
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BoxedWedgeFacingPositiveZAndNegativeX::ContainsBounded(const Point3D &point)
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{
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Check(this);
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Check(&point);
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Verify(minX <= point.x);
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Verify(maxX >= point.x);
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Verify(minY <= point.y);
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Verify(maxY >= point.y);
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Verify(minZ <= point.z);
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Verify(maxZ >= point.z);
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//
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//----------------------------------------------------------------------
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// Calculate the "slope" of the ramp when the base of the ramp is placed
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// at the origin
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//----------------------------------------------------------------------
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//
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Scalar run = minX - maxX;
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Scalar rise = minZ - maxZ;
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Verify(!Small_Enough(run));
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//
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//-------------------------------------------------------------------
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// Calculate the "slope" of the line from the base of the ramp to the
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// lower-north edge of the block
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//-------------------------------------------------------------------
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//
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Scalar x = point.x - maxX;
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Scalar z = point.z - maxZ;
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//
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//------------------------------------------------------------------------
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// If the slope rise/run is more positive than z/x slope, then the extent
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// box of the disk has clipped the ramp. Note that rise/run >= z/x yields
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// rise*x >= z*run, which avoids any divide-by-0 errors.
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//------------------------------------------------------------------------
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//
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return x*rise >= z*run;
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}
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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//
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Scalar
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BoxedWedgeFacingPositiveZAndNegativeX::FindDistanceBelowBounded(
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const Point3D &point
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)
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{
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Check(this);
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Check(&point);
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Verify(minX <= point.x);
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Verify(maxX >= point.x);
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Verify(minY <= point.y);
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Verify(minZ <= point.z);
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Verify(maxZ >= point.z);
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//
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//------------------------------------------------------------------------
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// Calculate the "slope" of the ramp when the NW corner the ramp is placed
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// at the origin
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//------------------------------------------------------------------------
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//
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Scalar run = minX - maxX;
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Scalar rise = minZ - maxZ;
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//
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//-------------------------------------------------------------------
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// Calculate the "slope" of the line from the base of the ramp to the
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// lower-north edge of the block
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//-------------------------------------------------------------------
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//
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Scalar x = point.x - maxX;
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Scalar z = point.z - maxZ;
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//
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//------------------------------------------------------------------------
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// If the slope rise/run is more positive than z/x slope, then the extent
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// box of the disk has clipped the ramp. Note that rise/run >= z/x yields
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// rise*x >= z*run, which avoids any divide-by-0 errors.
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//------------------------------------------------------------------------
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//
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if (x*rise >= z*run)
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{
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x = point.y - maxY;
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return Max(x,0.0f);
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}
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return -1.0f;
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}
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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//
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Logical
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BoxedWedgeFacingPositiveZAndNegativeX::HitByBounded(
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Line *line,
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Scalar enters,
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Scalar leaves
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)
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{
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Plane
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ramp;
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ramp.normal.x = maxZ - minZ;
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ramp.normal.y = 0.0f;
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ramp.normal.z = minX - maxX;
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//
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//-----------------------------
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// Scale the vector to a normal
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//-----------------------------
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//
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Scalar temp = ramp.normal.x*ramp.normal.x + ramp.normal.z*ramp.normal.z;
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Verify(!Small_Enough(temp));
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temp = Sqrt(temp);
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ramp.normal.x /= temp;
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ramp.normal.z /= temp;
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ramp.offset = maxX*ramp.normal.x + maxZ*ramp.normal.z;
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//
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//---------------------------------------------------------------------
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// Now that we have added a new plane into the definition of the convex
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// polyhedron, call a common ramp line collider
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//---------------------------------------------------------------------
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//
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return BoxedRampContainsLine(line, ramp, enters, leaves);
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}
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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//
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Logical
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BoxedWedgeFacingPositiveZAndNegativeX::TestInstance() const
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{
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return solidType == WedgeFacingPositiveZAndNegativeXType;
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}
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//#############################################################################
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//################# BoxedWedgeFacingPositiveZAndPositiveX ###############
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//#############################################################################
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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//
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BoxedWedgeFacingPositiveZAndPositiveX::BoxedWedgeFacingPositiveZAndPositiveX(
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const ExtentBox &extents,
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BoxedSolid::Material material,
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Simulation *owner,
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BoxedSolid *next_solid
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):
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BoxedSolid(
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extents,
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WedgeFacingPositiveZAndPositiveXType,
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material,
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owner,
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next_solid
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)
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{
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Check_Pointer(this);
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}
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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//
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BoxedWedgeFacingPositiveZAndPositiveX::~BoxedWedgeFacingPositiveZAndPositiveX()
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{
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Check_Pointer(this);
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}
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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//
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Logical
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BoxedWedgeFacingPositiveZAndPositiveX::IntersectsBounded(
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const ExtentBox &extents
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)
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{
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Check(this);
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Check(&extents);
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Verify(minX <= extents.minX);
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Verify(maxX >= extents.maxX);
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Verify(minY <= extents.minY);
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Verify(maxY >= extents.maxY);
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Verify(minZ <= extents.minZ);
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Verify(maxZ >= extents.maxZ);
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//
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//----------------------------------------------------------------------
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// Calculate the "slope" of the ramp when the base of the ramp is placed
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// at the origin
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//----------------------------------------------------------------------
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//
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Scalar run = maxX - minX;
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Scalar rise = minZ - maxZ;
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Verify(!Small_Enough(run));
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//
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//-------------------------------------------------------------------
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// Calculate the "slope" of the line from the base of the ramp to the
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// lower-north edge of the block
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//-------------------------------------------------------------------
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//
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Scalar x = extents.maxX - minX;
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Scalar z = extents.maxZ - maxZ;
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//
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//------------------------------------------------------------------------
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// If the slope rise/run is more negative than z/x slope, then the extent
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// box of the disk has clipped the ramp. Note that rise/run <= z/x yields
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// rise*x <= z*run, which avoids any divide-by-0 errors.
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//------------------------------------------------------------------------
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//
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return x*rise <= z*run;
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}
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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//
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Logical
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BoxedWedgeFacingPositiveZAndPositiveX::ContainsBounded(const Point3D &point)
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{
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Check(this);
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Check(&point);
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Verify(minX <= point.x);
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Verify(maxX >= point.x);
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Verify(minY <= point.y);
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Verify(maxY >= point.y);
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Verify(minZ <= point.z);
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Verify(maxZ >= point.z);
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//
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//----------------------------------------------------------------------
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// Calculate the "slope" of the ramp when the base of the ramp is placed
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// at the origin
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//----------------------------------------------------------------------
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//
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Scalar run = maxX - minX;
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Scalar rise = minZ - maxZ;
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Verify(!Small_Enough(run));
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//
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//-------------------------------------------------------------------
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// Calculate the "slope" of the line from the base of the ramp to the
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// lower-north edge of the block
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//-------------------------------------------------------------------
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//
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Scalar x = point.x - minX;
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Scalar z = point.z - maxZ;
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//
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//------------------------------------------------------------------------
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// If the slope rise/run is more negative than z/x slope, then the extent
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// box of the disk has clipped the ramp. Note that rise/run <= z/x yields
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// rise*x <= z*run, which avoids any divide-by-0 errors.
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//------------------------------------------------------------------------
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//
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return x*rise <= z*run;
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}
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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//
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Scalar
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BoxedWedgeFacingPositiveZAndPositiveX::FindDistanceBelowBounded(
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const Point3D &point
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)
|
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{
|
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Check(this);
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Check(&point);
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|
|
Verify(minX <= point.x);
|
|
Verify(maxX >= point.x);
|
|
Verify(minY <= point.y);
|
|
Verify(minZ <= point.z);
|
|
Verify(maxZ >= point.z);
|
|
|
|
//
|
|
//------------------------------------------------------------------------
|
|
// Calculate the "slope" of the ramp when the NW corner the ramp is placed
|
|
// at the origin
|
|
//------------------------------------------------------------------------
|
|
//
|
|
Scalar run = maxX - minX;
|
|
Scalar rise = minZ - maxZ;
|
|
Verify(!Small_Enough(run));
|
|
|
|
//
|
|
//-------------------------------------------------------------------
|
|
// Calculate the "slope" of the line from the base of the ramp to the
|
|
// lower-north edge of the block
|
|
//-------------------------------------------------------------------
|
|
//
|
|
Scalar x = point.x - minX;
|
|
Scalar z = point.z - maxZ;
|
|
|
|
//
|
|
//------------------------------------------------------------------------
|
|
// If the slope rise/run is more negative than z/x slope, then the extent
|
|
// box of the disk has clipped the ramp. Note that rise/run <= z/x yields
|
|
// rise*x <= z*run, which avoids any divide-by-0 errors.
|
|
//------------------------------------------------------------------------
|
|
//
|
|
if (x*rise <= z*run)
|
|
{
|
|
x = point.y - maxY;
|
|
return Max(x,0.0f);
|
|
}
|
|
return -1.0f;
|
|
}
|
|
|
|
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
//
|
|
Logical
|
|
BoxedWedgeFacingPositiveZAndPositiveX::HitByBounded(
|
|
Line *line,
|
|
Scalar enters,
|
|
Scalar leaves
|
|
)
|
|
{
|
|
Plane
|
|
ramp;
|
|
|
|
ramp.normal.x = minZ - maxZ;
|
|
ramp.normal.y = 0.0f;
|
|
ramp.normal.z = minX - maxX;
|
|
|
|
//
|
|
//-----------------------------
|
|
// Scale the vector to a normal
|
|
//-----------------------------
|
|
//
|
|
Scalar temp = ramp.normal.x*ramp.normal.x + ramp.normal.z*ramp.normal.z;
|
|
Verify(!Small_Enough(temp));
|
|
temp = Sqrt(temp);
|
|
ramp.normal.x /= temp;
|
|
ramp.normal.z /= temp;
|
|
ramp.offset = maxX*ramp.normal.x + minZ*ramp.normal.z;
|
|
|
|
//
|
|
//---------------------------------------------------------------------
|
|
// Now that we have added a new plane into the definition of the convex
|
|
// polyhedron, call a common ramp line collider
|
|
//---------------------------------------------------------------------
|
|
//
|
|
return BoxedRampContainsLine(line, ramp, enters, leaves);
|
|
}
|
|
|
|
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
//
|
|
Logical
|
|
BoxedWedgeFacingPositiveZAndPositiveX::TestInstance() const
|
|
{
|
|
return solidType == WedgeFacingPositiveZAndPositiveXType;
|
|
}
|
|
|
|
//#############################################################################
|
|
//################# BoxedWedgeFacingNegativeZAndNegativeX ###############
|
|
//#############################################################################
|
|
|
|
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
//
|
|
BoxedWedgeFacingNegativeZAndNegativeX::BoxedWedgeFacingNegativeZAndNegativeX(
|
|
const ExtentBox &extents,
|
|
BoxedSolid::Material material,
|
|
Simulation *owner,
|
|
BoxedSolid *next_solid
|
|
):
|
|
BoxedSolid(
|
|
extents,
|
|
WedgeFacingNegativeZAndNegativeXType,
|
|
material,
|
|
owner,
|
|
next_solid
|
|
)
|
|
{
|
|
Check_Pointer(this);
|
|
}
|
|
|
|
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
//
|
|
BoxedWedgeFacingNegativeZAndNegativeX::~BoxedWedgeFacingNegativeZAndNegativeX()
|
|
{
|
|
Check_Pointer(this);
|
|
}
|
|
|
|
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
//
|
|
Logical
|
|
BoxedWedgeFacingNegativeZAndNegativeX::IntersectsBounded(
|
|
const ExtentBox &extents
|
|
)
|
|
{
|
|
Check(this);
|
|
Check(&extents);
|
|
|
|
Verify(minX <= extents.minX);
|
|
Verify(maxX >= extents.maxX);
|
|
Verify(minY <= extents.minY);
|
|
Verify(maxY >= extents.maxY);
|
|
Verify(minZ <= extents.minZ);
|
|
Verify(maxZ >= extents.maxZ);
|
|
|
|
//
|
|
//----------------------------------------------------------------------
|
|
// Calculate the "slope" of the ramp when the base of the ramp is placed
|
|
// at the origin
|
|
//----------------------------------------------------------------------
|
|
//
|
|
Scalar run = minX - maxX;
|
|
Scalar rise = maxZ - minZ;
|
|
Verify(!Small_Enough(run));
|
|
|
|
//
|
|
//-------------------------------------------------------------------
|
|
// Calculate the "slope" of the line from the base of the ramp to the
|
|
// lower-north edge of the block
|
|
//-------------------------------------------------------------------
|
|
//
|
|
Scalar x = extents.minX - maxX;
|
|
Scalar z = extents.minZ - minZ;
|
|
|
|
//
|
|
//------------------------------------------------------------------------
|
|
// If the slope rise/run is more negative than z/x slope, then the extent
|
|
// box of the disk has clipped the ramp. Note that rise/run <= z/x yields
|
|
// rise*x <= z*run, which avoids any divide-by-0 errors.
|
|
//------------------------------------------------------------------------
|
|
//
|
|
return x*rise <= z*run;
|
|
}
|
|
|
|
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
//
|
|
Logical
|
|
BoxedWedgeFacingNegativeZAndNegativeX::ContainsBounded(const Point3D &point)
|
|
{
|
|
Check(this);
|
|
Check(&point);
|
|
|
|
Verify(minX <= point.x);
|
|
Verify(maxX >= point.x);
|
|
Verify(minY <= point.y);
|
|
Verify(maxY >= point.y);
|
|
Verify(minZ <= point.z);
|
|
Verify(maxZ >= point.z);
|
|
|
|
//
|
|
//----------------------------------------------------------------------
|
|
// Calculate the "slope" of the ramp when the base of the ramp is placed
|
|
// at the origin
|
|
//----------------------------------------------------------------------
|
|
//
|
|
Scalar run = minX - maxX;
|
|
Scalar rise = maxZ - minZ;
|
|
Verify(!Small_Enough(run));
|
|
|
|
//
|
|
//-------------------------------------------------------------------
|
|
// Calculate the "slope" of the line from the base of the ramp to the
|
|
// lower-north edge of the block
|
|
//-------------------------------------------------------------------
|
|
//
|
|
Scalar x = point.x - maxX;
|
|
Scalar z = point.z - minZ;
|
|
|
|
//
|
|
//------------------------------------------------------------------------
|
|
// If the slope rise/run is more negative than z/x slope, then the extent
|
|
// box of the disk has clipped the ramp. Note that rise/run <= z/x yields
|
|
// rise*x <= z*run, which avoids any divide-by-0 errors.
|
|
//------------------------------------------------------------------------
|
|
//
|
|
return x*rise <= z*run;
|
|
}
|
|
|
|
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
//
|
|
Scalar
|
|
BoxedWedgeFacingNegativeZAndNegativeX::FindDistanceBelowBounded(
|
|
const Point3D &point
|
|
)
|
|
{
|
|
Check(this);
|
|
Check(&point);
|
|
|
|
Verify(minX <= point.x);
|
|
Verify(maxX >= point.x);
|
|
Verify(minY <= point.y);
|
|
Verify(minZ <= point.z);
|
|
Verify(maxZ >= point.z);
|
|
|
|
//
|
|
//------------------------------------------------------------------------
|
|
// Calculate the "slope" of the ramp when the NW corner the ramp is placed
|
|
// at the origin
|
|
//------------------------------------------------------------------------
|
|
//
|
|
Scalar run = minX - maxX;
|
|
Scalar rise = maxZ - minZ;
|
|
Verify(!Small_Enough(run));
|
|
|
|
//
|
|
//-------------------------------------------------------------------
|
|
// Calculate the "slope" of the line from the base of the ramp to the
|
|
// lower-north edge of the block
|
|
//-------------------------------------------------------------------
|
|
//
|
|
Scalar x = point.x - maxX;
|
|
Scalar z = point.z - minZ;
|
|
|
|
//
|
|
//------------------------------------------------------------------------
|
|
// If the slope rise/run is more negative than z/x slope, then the extent
|
|
// box of the disk has clipped the ramp. Note that rise/run <= z/x yields
|
|
// rise*x <= z*run, which avoids any divide-by-0 errors.
|
|
//------------------------------------------------------------------------
|
|
//
|
|
if (x*rise <= z*run)
|
|
{
|
|
x = point.y - maxY;
|
|
return Max(x,0.0f);
|
|
}
|
|
return -1.0f;
|
|
}
|
|
|
|
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
//
|
|
Logical
|
|
BoxedWedgeFacingNegativeZAndNegativeX::HitByBounded(
|
|
Line *line,
|
|
Scalar enters,
|
|
Scalar leaves
|
|
)
|
|
{
|
|
Plane
|
|
ramp;
|
|
|
|
ramp.normal.x = maxZ - minZ;
|
|
ramp.normal.y = 0.0f;
|
|
ramp.normal.z = maxX - minX;
|
|
|
|
//
|
|
//-----------------------------
|
|
// Scale the vector to a normal
|
|
//-----------------------------
|
|
//
|
|
Scalar temp = ramp.normal.x*ramp.normal.x + ramp.normal.z*ramp.normal.z;
|
|
Verify(!Small_Enough(temp));
|
|
temp = Sqrt(temp);
|
|
ramp.normal.x /= temp;
|
|
ramp.normal.z /= temp;
|
|
ramp.offset = minX*ramp.normal.x + maxZ*ramp.normal.z;
|
|
|
|
//
|
|
//---------------------------------------------------------------------
|
|
// Now that we have added a new plane into the definition of the convex
|
|
// polyhedron, call a common ramp line collider
|
|
//---------------------------------------------------------------------
|
|
//
|
|
return BoxedRampContainsLine(line, ramp, enters, leaves);
|
|
}
|
|
|
|
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
//
|
|
Logical
|
|
BoxedWedgeFacingNegativeZAndNegativeX::TestInstance() const
|
|
{
|
|
return solidType == WedgeFacingNegativeZAndNegativeXType;
|
|
}
|