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Fixed value rounding near texture edges

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This commit is contained in:
Magne Sjaastad 2015-12-03 10:46:50 +01:00
parent d2537a207f
commit 709fce384a
1 changed files with 19 additions and 16 deletions
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35
ApplicationCode/ModelVisualization/ModelVisualization_UnitTests/RivTernaryScalarMapper-Test.cpp
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@ -48,41 +48,44 @@ TEST(TernaryScalarMapperTest, TextureMapping)
{
cvf::ref<RivTernaryScalarMapper> scalarMapper = new RivTernaryScalarMapper(cvf::Color3f::GRAY);
// See RivTernaryScalarMapper::mapToTextureCoord
double edgeClampDelta = 1.1 * 0.001;
// Without opacity
{
cvf::Vec2f texCoord = scalarMapper->mapToTextureCoord(0.0, 0.0, false);
EXPECT_DOUBLE_EQ(0.0, texCoord.x());
EXPECT_DOUBLE_EQ(0.0, texCoord.y());
EXPECT_NEAR(0.0, texCoord.x(), edgeClampDelta);
EXPECT_NEAR(0.0, texCoord.y(), edgeClampDelta);
}
{
cvf::Vec2f texCoord = scalarMapper->mapToTextureCoord(1.0, 0.0, false);
EXPECT_DOUBLE_EQ(1.0, texCoord.x());
EXPECT_DOUBLE_EQ(0.0, texCoord.y());
EXPECT_NEAR(1.0, texCoord.x(), edgeClampDelta);
EXPECT_NEAR(0.0, texCoord.y(), edgeClampDelta);
}
{
cvf::Vec2f texCoord = scalarMapper->mapToTextureCoord(0.0, 1.0, false);
EXPECT_DOUBLE_EQ(0.0, texCoord.x());
EXPECT_DOUBLE_EQ(0.5, texCoord.y());
EXPECT_NEAR(0.0, texCoord.x(), edgeClampDelta);
EXPECT_NEAR(0.5, texCoord.y(), edgeClampDelta);
}
{
cvf::Vec2f texCoord = scalarMapper->mapToTextureCoord(3.0, 3.0, false);
EXPECT_DOUBLE_EQ(1.0, texCoord.x());
EXPECT_DOUBLE_EQ(0.0, texCoord.y());
EXPECT_NEAR(1.0, texCoord.x(), edgeClampDelta);
EXPECT_NEAR(0.0, texCoord.y(), edgeClampDelta);
}
{
cvf::Vec2f texCoord = scalarMapper->mapToTextureCoord(-1.0, -1.0, false);
EXPECT_DOUBLE_EQ(0.0, texCoord.x());
EXPECT_DOUBLE_EQ(0.0, texCoord.y());
EXPECT_NEAR(0.0, texCoord.x(), edgeClampDelta);
EXPECT_NEAR(0.0, texCoord.y(), edgeClampDelta);
}
{
cvf::Vec2f texCoord = scalarMapper->mapToTextureCoord(0.5, 3.0, false);
EXPECT_DOUBLE_EQ(0.5, texCoord.x());
EXPECT_DOUBLE_EQ(0.25, texCoord.y());
EXPECT_NEAR(0.5, texCoord.x(), edgeClampDelta);
EXPECT_NEAR(0.25, texCoord.y(), edgeClampDelta);
}
@ -91,13 +94,13 @@ TEST(TernaryScalarMapperTest, TextureMapping)
// Opacity
{
cvf::Vec2f texCoord = scalarMapper->mapToTextureCoord(0.0, 0.0, true);
EXPECT_DOUBLE_EQ(0.0, texCoord.x());
EXPECT_DOUBLE_EQ(0.5, texCoord.y());
EXPECT_NEAR(0.0, texCoord.x(), edgeClampDelta);
EXPECT_NEAR(0.5, texCoord.y(), edgeClampDelta);
}
{
cvf::Vec2f texCoord = scalarMapper->mapToTextureCoord(0.0, 1.0, true);
EXPECT_DOUBLE_EQ(0.0, texCoord.x());
EXPECT_DOUBLE_EQ(1.0, texCoord.y());
EXPECT_NEAR(0.0, texCoord.x(), edgeClampDelta);
EXPECT_NEAR(1.0, texCoord.y(), edgeClampDelta);
}
}