97 lines
3.3 KiB
C++
97 lines
3.3 KiB
C++
#include <CesiumGltf/ExtensionKhrTextureTransform.h>
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#include <CesiumGltf/KhrTextureTransform.h>
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#include <CesiumUtility/Math.h>
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#include <doctest/doctest.h>
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using namespace CesiumGltf;
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TEST_CASE("Test KhrTextureTransform default constructor") {
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KhrTextureTransform textureTransform;
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REQUIRE(textureTransform.status() == KhrTextureTransformStatus::Valid);
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REQUIRE(textureTransform.offset() == glm::dvec2{0.0, 0.0});
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REQUIRE(textureTransform.rotation() == 0.0);
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REQUIRE(textureTransform.rotationSineCosine() == glm::dvec2{0.0, 1.0});
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REQUIRE(textureTransform.scale() == glm::dvec2{1.0, 1.0});
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}
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TEST_CASE("Test KhrTextureTransform constructs with valid extension") {
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ExtensionKhrTextureTransform extension;
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extension.offset = {5, 12};
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extension.rotation = CesiumUtility::Math::PiOverTwo;
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extension.scale = {2.0, 0.5};
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KhrTextureTransform textureTransform(extension);
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REQUIRE(textureTransform.status() == KhrTextureTransformStatus::Valid);
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REQUIRE(textureTransform.offset() == glm::dvec2{5, 12});
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REQUIRE(textureTransform.rotation() == CesiumUtility::Math::PiOverTwo);
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REQUIRE(textureTransform.scale() == glm::dvec2{2.0, 0.5});
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glm::dvec2 sineCosine = textureTransform.rotationSineCosine();
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REQUIRE(CesiumUtility::Math::equalsEpsilon(
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sineCosine.x,
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1.0,
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CesiumUtility::Math::Epsilon6));
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REQUIRE(CesiumUtility::Math::equalsEpsilon(
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sineCosine.y,
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0.0,
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CesiumUtility::Math::Epsilon6));
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}
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TEST_CASE("Test KhrTextureTransform reports invalid offset") {
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ExtensionKhrTextureTransform extension;
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extension.offset = {5};
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KhrTextureTransform textureTransform(extension);
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REQUIRE(
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textureTransform.status() ==
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KhrTextureTransformStatus::ErrorInvalidOffset);
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}
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TEST_CASE("Test KhrTextureTransform reports invalid scale") {
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ExtensionKhrTextureTransform extension;
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extension.scale = {5};
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KhrTextureTransform textureTransform(extension);
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REQUIRE(
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textureTransform.status() ==
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KhrTextureTransformStatus::ErrorInvalidScale);
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}
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TEST_CASE("Test KhrTextureTransform applies identity transform") {
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KhrTextureTransform textureTransform;
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REQUIRE(textureTransform.status() == KhrTextureTransformStatus::Valid);
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REQUIRE(textureTransform.applyTransform(0, 0) == glm::dvec2(0, 0));
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REQUIRE(textureTransform.applyTransform(0.5, 1) == glm::dvec2(0.5, 1));
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}
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TEST_CASE("Test KhrTextureTransform applies non-identity transform") {
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ExtensionKhrTextureTransform extension;
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extension.offset = {5, 12};
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extension.rotation = CesiumUtility::Math::PiOverTwo;
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extension.scale = {2.0, 0.5};
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KhrTextureTransform textureTransform(extension);
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glm::dvec2 transformedUv = textureTransform.applyTransform(0.0, 0.0);
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REQUIRE(CesiumUtility::Math::equalsEpsilon(
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transformedUv.x,
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5.0,
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CesiumUtility::Math::Epsilon6));
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REQUIRE(CesiumUtility::Math::equalsEpsilon(
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transformedUv.y,
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12.0,
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CesiumUtility::Math::Epsilon6));
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transformedUv = textureTransform.applyTransform(1.0, 1.0);
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// scaled = (2.0, 0.5)
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// rotated = (0.5, -2.0)
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// translated = (5.5, 10.0)
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REQUIRE(CesiumUtility::Math::equalsEpsilon(
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transformedUv.x,
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5.5,
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CesiumUtility::Math::Epsilon6));
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REQUIRE(CesiumUtility::Math::equalsEpsilon(
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transformedUv.y,
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10.0,
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CesiumUtility::Math::Epsilon6));
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}
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