--- /dev/null
+
+/*******************************************************************************
+
+ Copyright (c) 2009, Charles McGarvey
+ 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.
+
+ 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 HOLDER 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.
+
+*******************************************************************************/
+
+#include "Aabb.hh"
+#include "Plane.hh"
+#include "Sphere.hh"
+
+
+namespace Mf {
+
+
+Plane::Halfspace Plane::intersectsAabb(const Aabb& aabb) const
+{
+ Vector3 corners[8];
+ int nPositive = 8;
+
+ aabb.getCorners(corners);
+
+ for (int i = 0; i < 8; ++i)
+ {
+ if (intersectsPoint(corners[i]) == NEGATIVE)
+ {
+ --nPositive;
+ }
+ }
+
+ if (nPositive == 0) return NEGATIVE;
+ else if (nPositive == 8) return POSITIVE;
+ else return INTERSECT;
+}
+
+Plane::Halfspace Plane::intersectsSphere(const Sphere& sphere) const
+{
+ Scalar distance = getDistanceToPoint(sphere.point);
+
+ if (distance < -sphere.radius) return NEGATIVE;
+ else if (distance < sphere.radius) return INTERSECT;
+ else return POSITIVE;
+}
+
+
+} // namespace Mf
+
+/** vim: set ts=4 sw=4 tw=80: *************************************************/
+