math_test.cc

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#include <gtest/gtest.h>
 
#include <ACG/Math/GLMatrixT.hh>
 
 
class MathTest : public testing::Test {
 
public:
  MathTest()
  {
  }
 
protected:
 
  // This function is called before each test is run
  virtual void SetUp() {
  }
 
  // This function is called after all tests are through
  virtual void TearDown() {
  }
 
 
};
 
TEST_F(MathTest, GLMatrixT_extract_planes ) {
  
  const double cmp_eps = 1e-7;
 
  const double near = 10.0;
  const double far = 25.0;
 
  // test clipping plane extraction on perspective and orthographic matrix
  ACG::GLMatrixd P;
  P.identity();
 
  EXPECT_FALSE(P.isPerspective());
  EXPECT_FALSE(P.isOrtho());
 
  P.perspective(45.0, 4.0/3.0, near, far);
 
  ACG::Vec2d planes = P.extract_planes_perspective();
 
  EXPECT_LE(fabs(planes[0] - near), cmp_eps);
  EXPECT_LE(fabs(planes[1] - far), cmp_eps);
 
  EXPECT_TRUE(P.isPerspective());
  EXPECT_FALSE(P.isOrtho());
 
  // test on orthographic matrix
 
  P.identity();
  P.ortho(-1.0, 1.0, -1.0, 1.0, near, far);
 
  planes = P.extract_planes_ortho();
 
  EXPECT_LE(fabs(planes[0] - near), cmp_eps);
  EXPECT_LE(fabs(planes[1] - far), cmp_eps);
 
  EXPECT_FALSE(P.isPerspective());
  EXPECT_TRUE(P.isOrtho());
}