diff options
author | click <none@none> | 2010-06-08 08:04:26 +0200 |
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committer | click <none@none> | 2010-06-08 08:04:26 +0200 |
commit | f867f6d7a8f728e163ba785f2da45ec97fa8ba53 (patch) | |
tree | f4f099c515cbf27dac85b9ad6972fdc8f1e12fef /externals/g3dlite/Capsule.cpp | |
parent | c08a7d6348a06d3b84d9a2c620a903d832199dd9 (diff) |
Get g3dlib, zlib and jemalloc to build again
--HG--
branch : trunk
rename : opt/cleanup/tab2spaces.sh => contrib/cleanup/tab2spaces.sh
rename : opt/cleanup/whitespace.sh => contrib/cleanup/whitespace.sh
rename : opt/conf_merge/README => contrib/conf_merge/README
rename : opt/conf_merge/index.php => contrib/conf_merge/index.php
rename : opt/conf_merge/merge.php => contrib/conf_merge/merge.php
rename : doc/AuctionHouseBot.txt => docs/AuctionHouseBot.txt
rename : doc/DocStructure.dox => docs/DocStructure.dox
rename : doc/Doxyfile.in => docs/Doxyfile.in
rename : doc/EventAI.txt => docs/EventAI.txt
rename : doc/HowToScript.txt => docs/HowToScript.txt
rename : doc/TextTables.txt => docs/TextTables.txt
rename : doc/UnixInstall.txt => docs/UnixInstall.txt
rename : externals/jemalloc/include/internal/arena.h => externals/jemalloc/jemalloc/internal/arena.h
rename : externals/jemalloc/include/internal/base.h => externals/jemalloc/jemalloc/internal/base.h
rename : externals/jemalloc/include/internal/chunk.h => externals/jemalloc/jemalloc/internal/chunk.h
rename : externals/jemalloc/include/internal/chunk_dss.h => externals/jemalloc/jemalloc/internal/chunk_dss.h
rename : externals/jemalloc/include/internal/chunk_mmap.h => externals/jemalloc/jemalloc/internal/chunk_mmap.h
rename : externals/jemalloc/include/internal/chunk_swap.h => externals/jemalloc/jemalloc/internal/chunk_swap.h
rename : externals/jemalloc/include/internal/ckh.h => externals/jemalloc/jemalloc/internal/ckh.h
rename : externals/jemalloc/include/internal/ctl.h => externals/jemalloc/jemalloc/internal/ctl.h
rename : externals/jemalloc/include/internal/extent.h => externals/jemalloc/jemalloc/internal/extent.h
rename : externals/jemalloc/include/internal/hash.h => externals/jemalloc/jemalloc/internal/hash.h
rename : externals/jemalloc/include/internal/huge.h => externals/jemalloc/jemalloc/internal/huge.h
rename : externals/jemalloc/include/internal/jemalloc_internal.h => externals/jemalloc/jemalloc/internal/jemalloc_internal.h
rename : externals/jemalloc/include/internal/jemalloc_internal.h.in => externals/jemalloc/jemalloc/internal/jemalloc_internal.h.in
rename : externals/jemalloc/include/internal/mb.h => externals/jemalloc/jemalloc/internal/mb.h
rename : externals/jemalloc/include/internal/mutex.h => externals/jemalloc/jemalloc/internal/mutex.h
rename : externals/jemalloc/include/internal/prof.h => externals/jemalloc/jemalloc/internal/prof.h
rename : externals/jemalloc/include/internal/ql.h => externals/jemalloc/jemalloc/internal/ql.h
rename : externals/jemalloc/include/internal/qr.h => externals/jemalloc/jemalloc/internal/qr.h
rename : externals/jemalloc/include/internal/rb.h => externals/jemalloc/jemalloc/internal/rb.h
rename : externals/jemalloc/include/internal/stats.h => externals/jemalloc/jemalloc/internal/stats.h
rename : externals/jemalloc/include/internal/tcache.h => externals/jemalloc/jemalloc/internal/tcache.h
rename : externals/jemalloc/include/internal/totally_not_p_r_n.h => externals/jemalloc/jemalloc/internal/totally_not_p_r_n.h
rename : externals/jemalloc/include/jemalloc.h => externals/jemalloc/jemalloc/jemalloc.h
rename : externals/jemalloc/include/jemalloc.h.in => externals/jemalloc/jemalloc/jemalloc.h.in
rename : externals/jemalloc/include/jemalloc_defs.h => externals/jemalloc/jemalloc/jemalloc_defs.h
rename : externals/jemalloc/include/jemalloc_defs.h.in => externals/jemalloc/jemalloc/jemalloc_defs.h.in
Diffstat (limited to 'externals/g3dlite/Capsule.cpp')
-rw-r--r-- | externals/g3dlite/Capsule.cpp | 179 |
1 files changed, 179 insertions, 0 deletions
diff --git a/externals/g3dlite/Capsule.cpp b/externals/g3dlite/Capsule.cpp new file mode 100644 index 00000000000..2ad3891c960 --- /dev/null +++ b/externals/g3dlite/Capsule.cpp @@ -0,0 +1,179 @@ +/** + @file Capsule.cpp + + @maintainer Morgan McGuire, http://graphics.cs.williams.edu + + @created 2003-02-07 + @edited 2005-08-18 + + Copyright 2000-2009, Morgan McGuire. + All rights reserved. + */ + +#include "G3D/Capsule.h" +#include "G3D/BinaryInput.h" +#include "G3D/BinaryOutput.h" +#include "G3D/LineSegment.h" +#include "G3D/Sphere.h" +#include "G3D/CoordinateFrame.h" +#include "G3D/Line.h" +#include "G3D/AABox.h" + +namespace G3D { + +Capsule::Capsule(class BinaryInput& b) { + deserialize(b); +} + + +Capsule::Capsule() { +} + + +Capsule::Capsule(const Vector3& _p1, const Vector3& _p2, float _r) + : p1(_p1), p2(_p2), _radius(_r) { +} + + +void Capsule::serialize(class BinaryOutput& b) const { + p1.serialize(b); + p2.serialize(b); + b.writeFloat64(_radius); +} + + +void Capsule::deserialize(class BinaryInput& b) { + p1.deserialize(b); + p2.deserialize(b); + _radius = b.readFloat64(); +} + + +Line Capsule::axis() const { + return Line::fromTwoPoints(p1, p2); +} + + +float Capsule::volume() const { + return + // Sphere volume + pow(_radius, 3) * pi() * 4 / 3 + + + // Cylinder volume + pow(_radius, 2) * (p1 - p2).magnitude(); +} + + +float Capsule::area() const { + + return + // Sphere area + pow(_radius, 2) * 4 * pi() + + + // Cylinder area + twoPi() * _radius * (p1 - p2).magnitude(); +} + + +void Capsule::getBounds(AABox& out) const { + Vector3 min = p1.min(p2) - (Vector3(1, 1, 1) * _radius); + Vector3 max = p1.max(p2) + (Vector3(1, 1, 1) * _radius); + + out = AABox(min, max); +} + + +bool Capsule::contains(const Vector3& p) const { + return LineSegment::fromTwoPoints(p1, p2).distanceSquared(p) <= square(radius()); +} + + +void Capsule::getRandomSurfacePoint(Vector3& p, Vector3& N) const { + float h = height(); + float r = radius(); + + // Create a random point on a standard capsule and then rotate to the global frame. + + // Relative areas + float capRelArea = sqrt(r) / 2.0f; + float sideRelArea = r * h; + + float r1 = uniformRandom(0, capRelArea * 2 + sideRelArea); + + if (r1 < capRelArea * 2) { + + // Select a point uniformly at random on a sphere + N = Sphere(Vector3::zero(), 1).randomSurfacePoint(); + p = N * r; + p.y += sign(p.y) * h / 2.0f; + } else { + // Side + float a = uniformRandom(0, (float)twoPi()); + N.x = cos(a); + N.y = 0; + N.z = sin(a); + p.x = N.x * r; + p.z = N.y * r; + p.y = uniformRandom(-h / 2.0f, h / 2.0f); + } + + // Transform to world space + CoordinateFrame cframe; + getReferenceFrame(cframe); + + p = cframe.pointToWorldSpace(p); + N = cframe.normalToWorldSpace(N); +} + + +void Capsule::getReferenceFrame(CoordinateFrame& cframe) const { + cframe.translation = center(); + + Vector3 Y = (p1 - p2).direction(); + Vector3 X = (abs(Y.dot(Vector3::unitX())) > 0.9) ? Vector3::unitY() : Vector3::unitX(); + Vector3 Z = X.cross(Y).direction(); + X = Y.cross(Z); + cframe.rotation.setColumn(0, X); + cframe.rotation.setColumn(1, Y); + cframe.rotation.setColumn(2, Z); +} + + +Vector3 Capsule::randomInteriorPoint() const { + float h = height(); + float r = radius(); + + // Create a random point in a standard capsule and then rotate to the global frame. + + Vector3 p; + + float hemiVolume = pi() * (r*r*r) * 4 / 6.0; + float cylVolume = pi() * square(r) * h; + + float r1 = uniformRandom(0, 2.0 * hemiVolume + cylVolume); + + if (r1 < 2.0 * hemiVolume) { + + p = Sphere(Vector3::zero(), r).randomInteriorPoint(); + + p.y += sign(p.y) * h / 2.0f; + + } else { + + // Select a point uniformly at random on a disk + float a = uniformRandom(0, (float)twoPi()); + float r2 = sqrt(uniformRandom(0, 1)) * r; + + p = Vector3(cos(a) * r2, + uniformRandom(-h / 2.0f, h / 2.0f), + sin(a) * r2); + } + + // Transform to world space + CoordinateFrame cframe; + getReferenceFrame(cframe); + + return cframe.pointToWorldSpace(p); +} + +} // namespace |