Blame ImathTest/testFrustumTest.cpp

Packit 8dc392
///////////////////////////////////////////////////////////////////////////
Packit 8dc392
//
Packit 8dc392
// Copyright (c) 2011, Industrial Light & Magic, a division of Lucas
Packit 8dc392
// Digital Ltd. LLC
Packit 8dc392
// 
Packit 8dc392
// All rights reserved.
Packit 8dc392
// 
Packit 8dc392
// Redistribution and use in source and binary forms, with or without
Packit 8dc392
// modification, are permitted provided that the following conditions are
Packit 8dc392
// met:
Packit 8dc392
// *       Redistributions of source code must retain the above copyright
Packit 8dc392
// notice, this list of conditions and the following disclaimer.
Packit 8dc392
// *       Redistributions in binary form must reproduce the above
Packit 8dc392
// copyright notice, this list of conditions and the following disclaimer
Packit 8dc392
// in the documentation and/or other materials provided with the
Packit 8dc392
// distribution.
Packit 8dc392
// *       Neither the name of Industrial Light & Magic nor the names of
Packit 8dc392
// its contributors may be used to endorse or promote products derived
Packit 8dc392
// from this software without specific prior written permission. 
Packit 8dc392
// 
Packit 8dc392
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
Packit 8dc392
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
Packit 8dc392
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
Packit 8dc392
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
Packit 8dc392
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
Packit 8dc392
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
Packit 8dc392
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
Packit 8dc392
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
Packit 8dc392
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
Packit 8dc392
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
Packit 8dc392
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
Packit 8dc392
//
Packit 8dc392
///////////////////////////////////////////////////////////////////////////
Packit 8dc392
Packit 8dc392
Packit 8dc392
Packit 8dc392
#include <testFrustumTest.h>
Packit 8dc392
#include "ImathFrustum.h"
Packit 8dc392
#include "ImathFrustumTest.h"
Packit 8dc392
#include "ImathBox.h"
Packit 8dc392
#include "ImathSphere.h"
Packit 8dc392
#include <iostream>
Packit 8dc392
#include <assert.h>
Packit 8dc392
Packit 8dc392
Packit 8dc392
using namespace std;
Packit 8dc392
Packit 8dc392
void
Packit 8dc392
testFrustumTest ()
Packit 8dc392
{
Packit 8dc392
    cout << "Testing functions in ImathFrustumTest.h";
Packit 8dc392
Packit 8dc392
    cout << "\nisVisible(Vec3) ";
Packit 8dc392
Packit 8dc392
    float n = 1.7;
Packit 8dc392
    float f = 567.0;
Packit 8dc392
    float l = -3.5;
Packit 8dc392
    float r = 2.0;
Packit 8dc392
    float b = -1.3;
Packit 8dc392
    float t = 0.9;
Packit 8dc392
Packit 8dc392
    IMATH_INTERNAL_NAMESPACE::Frustum<float> frustum (n, f, l, r, t, b, false);
Packit 8dc392
Packit 8dc392
    IMATH_INTERNAL_NAMESPACE::Matrix44<float> cameraMat;
Packit 8dc392
    IMATH_INTERNAL_NAMESPACE::Vec3<float> cameraPos(100.0f, 200.0f, 300.0f);
Packit 8dc392
    cameraMat.makeIdentity();
Packit 8dc392
    cameraMat.translate(cameraPos);
Packit 8dc392
Packit 8dc392
    IMATH_INTERNAL_NAMESPACE::FrustumTest<float> frustumTest(frustum, cameraMat);
Packit 8dc392
Packit 8dc392
    /////////////////////////////////////////////////////
Packit 8dc392
    // Test Vec3's
Packit 8dc392
    IMATH_INTERNAL_NAMESPACE::Vec3<float> insideVec      (100.0f, 200.0f,          300 -   2.0f);
Packit 8dc392
    IMATH_INTERNAL_NAMESPACE::Vec3<float> outsideVec_near(100.0f, 200.0f,          300 -   1.5f);
Packit 8dc392
    IMATH_INTERNAL_NAMESPACE::Vec3<float> outsideVec_far (100.0f, 200.0f,          300 - 568.0f);
Packit 8dc392
    IMATH_INTERNAL_NAMESPACE::Vec3<float> outsideVec_side(100.0f, 200.0f + 100.0f, 300 -   2.0f);
Packit 8dc392
    IMATH_INTERNAL_NAMESPACE::Vec3<float> outsideVec_up  (100.0f + 100.0f, 200.0f, 300 -   2.0f);
Packit 8dc392
Packit 8dc392
    assert (  frustumTest.isVisible(insideVec));
Packit 8dc392
    assert (! frustumTest.isVisible(outsideVec_near));
Packit 8dc392
    assert (! frustumTest.isVisible(outsideVec_far));
Packit 8dc392
    assert (! frustumTest.isVisible(outsideVec_side));
Packit 8dc392
    assert (! frustumTest.isVisible(outsideVec_up));
Packit 8dc392
    cout << "passed Vec3\n";
Packit 8dc392
Packit 8dc392
    /////////////////////////////////////////////////////
Packit 8dc392
    // Test Boxes
Packit 8dc392
    IMATH_INTERNAL_NAMESPACE::Vec3<float> tinySize(0.0001f, 0.0001f, 0.0001f);
Packit 8dc392
    IMATH_INTERNAL_NAMESPACE::Vec3<float> hugeSize(1000.0f, 1000.0f, 1000.0f);
Packit 8dc392
Packit 8dc392
    // Empty box should NOT be visible
Packit 8dc392
    assert (!frustumTest.isVisible(IMATH_INTERNAL_NAMESPACE::Box<IMATH_INTERNAL_NAMESPACE::Vec3<float> >()));
Packit 8dc392
         
Packit 8dc392
    // Tiny box inside the frust should be visible
Packit 8dc392
    assert (frustumTest.isVisible(IMATH_INTERNAL_NAMESPACE::Box<IMATH_INTERNAL_NAMESPACE::Vec3<float> >
Packit 8dc392
        (insideVec + tinySize, insideVec + tinySize)));
Packit 8dc392
Packit 8dc392
    // Huge boxes inside and outside should be visible
Packit 8dc392
    assert (frustumTest.isVisible(IMATH_INTERNAL_NAMESPACE::Box<IMATH_INTERNAL_NAMESPACE::Vec3<float> >
Packit 8dc392
        (insideVec - hugeSize, insideVec + hugeSize)));
Packit 8dc392
    assert (frustumTest.isVisible(IMATH_INTERNAL_NAMESPACE::Box<IMATH_INTERNAL_NAMESPACE::Vec3<float> >
Packit 8dc392
        (outsideVec_near - hugeSize, outsideVec_near + hugeSize)));
Packit 8dc392
    assert (frustumTest.isVisible(IMATH_INTERNAL_NAMESPACE::Box<IMATH_INTERNAL_NAMESPACE::Vec3<float> >
Packit 8dc392
        (outsideVec_far - hugeSize, outsideVec_far + hugeSize)));
Packit 8dc392
    assert (frustumTest.isVisible(IMATH_INTERNAL_NAMESPACE::Box<IMATH_INTERNAL_NAMESPACE::Vec3<float> >
Packit 8dc392
        (outsideVec_side - hugeSize, outsideVec_side + hugeSize)));
Packit 8dc392
    assert (frustumTest.isVisible(IMATH_INTERNAL_NAMESPACE::Box<IMATH_INTERNAL_NAMESPACE::Vec3<float> >
Packit 8dc392
        (outsideVec_up - hugeSize, outsideVec_up + hugeSize)));
Packit 8dc392
Packit 8dc392
    // Tiny boxes outside should NOT be visible
Packit 8dc392
    assert (! frustumTest.isVisible(IMATH_INTERNAL_NAMESPACE::Box<IMATH_INTERNAL_NAMESPACE::Vec3<float> >
Packit 8dc392
        (outsideVec_near - tinySize, outsideVec_near + tinySize)));
Packit 8dc392
    assert (! frustumTest.isVisible(IMATH_INTERNAL_NAMESPACE::Box<IMATH_INTERNAL_NAMESPACE::Vec3<float> >
Packit 8dc392
        (outsideVec_far - tinySize, outsideVec_far + tinySize)));
Packit 8dc392
    assert (! frustumTest.isVisible(IMATH_INTERNAL_NAMESPACE::Box<IMATH_INTERNAL_NAMESPACE::Vec3<float> >
Packit 8dc392
        (outsideVec_side - tinySize, outsideVec_side + tinySize)));
Packit 8dc392
    assert (! frustumTest.isVisible(IMATH_INTERNAL_NAMESPACE::Box<IMATH_INTERNAL_NAMESPACE::Vec3<float> >
Packit 8dc392
        (outsideVec_up - tinySize, outsideVec_up + tinySize)));
Packit 8dc392
    cout << "passed Box\n";
Packit 8dc392
Packit 8dc392
Packit 8dc392
    /////////////////////////////////////////////////////
Packit 8dc392
    // Test Spheres
Packit 8dc392
    float tinyRadius = 0.0001f;
Packit 8dc392
    float hugeRadius = 1000.0f;
Packit 8dc392
Packit 8dc392
    // Tiny sphere inside the frust should be visible
Packit 8dc392
    assert (frustumTest.isVisible(IMATH_INTERNAL_NAMESPACE::Sphere3<float>
Packit 8dc392
        (insideVec, tinyRadius)));
Packit 8dc392
Packit 8dc392
    // Huge spheres inside and outside should be visible
Packit 8dc392
    assert (frustumTest.isVisible(IMATH_INTERNAL_NAMESPACE::Sphere3<float>
Packit 8dc392
        (insideVec, hugeRadius)));
Packit 8dc392
    assert (frustumTest.isVisible(IMATH_INTERNAL_NAMESPACE::Sphere3<float>
Packit 8dc392
        (outsideVec_near, hugeRadius)));
Packit 8dc392
    assert (frustumTest.isVisible(IMATH_INTERNAL_NAMESPACE::Sphere3<float>
Packit 8dc392
        (outsideVec_far, hugeRadius)));
Packit 8dc392
    assert (frustumTest.isVisible(IMATH_INTERNAL_NAMESPACE::Sphere3<float>
Packit 8dc392
        (outsideVec_side, hugeRadius)));
Packit 8dc392
    assert (frustumTest.isVisible(IMATH_INTERNAL_NAMESPACE::Sphere3<float>
Packit 8dc392
        (outsideVec_up, hugeRadius)));
Packit 8dc392
Packit 8dc392
    // Tiny spheres outside should NOT be visible
Packit 8dc392
    assert (! frustumTest.isVisible(IMATH_INTERNAL_NAMESPACE::Sphere3<float>
Packit 8dc392
        (outsideVec_near, tinyRadius)));
Packit 8dc392
    assert (! frustumTest.isVisible(IMATH_INTERNAL_NAMESPACE::Sphere3<float>
Packit 8dc392
        (outsideVec_far, tinyRadius)));
Packit 8dc392
    assert (! frustumTest.isVisible(IMATH_INTERNAL_NAMESPACE::Sphere3<float>
Packit 8dc392
        (outsideVec_side, tinyRadius)));
Packit 8dc392
    assert (! frustumTest.isVisible(IMATH_INTERNAL_NAMESPACE::Sphere3<float>
Packit 8dc392
        (outsideVec_up, tinyRadius)));
Packit 8dc392
    cout << "passed Sphere\n";
Packit 8dc392
Packit 8dc392
Packit 8dc392
Packit 8dc392
Packit 8dc392
Packit 8dc392
    cout << "\nok\n\n";
Packit 8dc392
}