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https://github.com/TorqueGameEngines/Torque3D.git
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75 lines
3 KiB
C++
75 lines
3 KiB
C++
//-----------------------------------------------------------------------------
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// Copyright (c) 2014 GarageGames, LLC
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to
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// deal in the Software without restriction, including without limitation the
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// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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// sell copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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// IN THE SOFTWARE.
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//-----------------------------------------------------------------------------
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#ifdef TORQUE_TESTS_ENABLED
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#include "testing/unitTesting.h"
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#include "math/mPlane.h"
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// Static test data. All combinations of position and normal are tested in each
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// test case. This allows a large number of tests without introducing non-
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// deterministic test behavior.
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static const Point3F positions[] = {Point3F(0, 0, 0), Point3F(1, -2, 3), Point3F(1e-2, -2e-2, 1)};
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static const U32 numPositions = sizeof(positions) / sizeof(Point3F);
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static const Point3F normals[] = {Point3F(1, 0, 0), Point3F(-4, -2, 6)};
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static const U32 numNormals = sizeof(normals) / sizeof(Point3F);
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/// Tests that points in the direction of the normal are in 'Front' of the
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/// plane, while points in the reverse direction of the normal are in
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/// 'Back' of the plane.
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TEST(Plane, WhichSide)
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{
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for(U32 i = 0; i < numPositions; i++) {
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for(U32 j = 0; j < numNormals; j++) {
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Point3F position = positions[i];
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Point3F normal = normals[j];
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PlaneF p(position, normal);
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EXPECT_EQ(p.whichSide(position + normal), PlaneF::Front );
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EXPECT_EQ(p.whichSide(position - normal), PlaneF::Back );
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EXPECT_EQ(p.whichSide(position), PlaneF::On );
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}
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}
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}
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/// Tests that the distToPlane method returns the exact length that the test
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/// point is offset by in the direction of the normal.
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TEST(Plane, DistToPlane)
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{
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for(U32 i = 0; i < numPositions; i++) {
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for(U32 j = 0; j < numNormals; j++) {
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Point3F position = positions[i];
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Point3F normal = normals[j];
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PlaneF p(position, normal);
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EXPECT_FLOAT_EQ(p.distToPlane(position + normal), normal.len());
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EXPECT_FLOAT_EQ(p.distToPlane(position - normal), -normal.len());
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EXPECT_FLOAT_EQ(p.distToPlane(position), 0);
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}
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}
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}
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#endif
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