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| author | gspencer@google.com <gspencer@google.com@0039d316-1c4b-4281-b951-d872f2087c98> | 2009-05-27 23:15:42 +0000 |
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| committer | gspencer@google.com <gspencer@google.com@0039d316-1c4b-4281-b951-d872f2087c98> | 2009-05-27 23:15:42 +0000 |
| commit | 05b47f7a8c5451f858dc220df0e3a97542edace6 (patch) | |
| tree | a2273d619f0625c9d44d40842845ccce2eac1045 /o3d/core/cross/ray_intersection_info.h | |
| parent | 5cdc8bdb4c847cefe7f4542bd10c9880c2c557a0 (diff) | |
| download | chromium_src-05b47f7a8c5451f858dc220df0e3a97542edace6.zip chromium_src-05b47f7a8c5451f858dc220df0e3a97542edace6.tar.gz chromium_src-05b47f7a8c5451f858dc220df0e3a97542edace6.tar.bz2 | |
This is the O3D source tree's initial commit to the Chromium tree. It
is not built or referenced at all by the chrome build yet, and doesn't
yet build in it's new home. We'll change that shortly.
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@17035 0039d316-1c4b-4281-b951-d872f2087c98
Diffstat (limited to 'o3d/core/cross/ray_intersection_info.h')
| -rw-r--r-- | o3d/core/cross/ray_intersection_info.h | 128 |
1 files changed, 128 insertions, 0 deletions
diff --git a/o3d/core/cross/ray_intersection_info.h b/o3d/core/cross/ray_intersection_info.h new file mode 100644 index 0000000..7fa6679 --- /dev/null +++ b/o3d/core/cross/ray_intersection_info.h @@ -0,0 +1,128 @@ +/* + * Copyright 2009, Google Inc. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following disclaimer + * in the documentation and/or other materials provided with the + * distribution. + * * Neither the name of Google Inc. nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + + +// This file contains the declaration of RayIntersectionInfo + +#ifndef O3D_CORE_CROSS_RAY_INTERSECTION_INFO_H_ +#define O3D_CORE_CROSS_RAY_INTERSECTION_INFO_H_ + +#include "core/cross/types.h" + +namespace o3d { + +// A RayIntersectionInfo is used to return the results of ray intersection +// tests. +class RayIntersectionInfo { + public: + RayIntersectionInfo() + : valid_(false), + intersected_(false), + primitive_index_(-1) { + } + + // Puts this info in the default, unset state. + void Reset() { + set_valid(false); + set_intersected(false); + set_primitive_index(-1); + } + + // True if this ray intersection info is valid. For example if you call + // element->IntersectRay on an element that has no vertex buffers the result + // will be invalid. + bool valid() const { + return valid_; + } + + void set_valid(bool valid) { + valid_ = valid; + } + + // True if this ray intersection intersected something. + bool intersected() const { + return intersected_; + } + + void set_intersected(bool intersected) { + intersected_ = intersected; + } + + // The position the ray intersected something. + const Point3& position() const { + return position_; + } + + void set_position(const Point3& position) { + position_ = position; + } + + // The index of the primitive that was intersected. + int primitive_index() const { + return primitive_index_; + } + + void set_primitive_index(int index) { + primitive_index_ = index; + } + + // Intersects a ray with a trianagle. + // Parameters: + // start: position of start of ray in local space. + // end: position of end of ray in local space. + // vert0: first vertex of triangle. + // vert1: second vertex of triangle. + // vert2: third vertex of triangle. + // intersectionPoint: pointer to Point3 to receive the position of + // intersection. + // Returns: + // true if triangle was intersected by ray. + static bool IntersectTriangle(const Point3& start, + const Point3& end, + const Point3& vert0, + const Point3& vert1, + const Point3& vert2, + Point3* intersectionPoint); + + private: + bool valid_; + bool intersected_; + Point3 position_; + int primitive_index_; +}; + +} // namespace o3d + +#endif // O3D_CORE_CROSS_RAY_INTERSECTION_INFO_H_ + + + + |