Function performPatchRotateTest

test/TextureManipulation.cpp:98–131

{

void performPatchRotateTest(bool clockwise)
{
    auto worldspawn = GlobalMapModule().findOrInsertWorldspawn();
    auto patchNode = algorithm::createPatchFromBounds(worldspawn, AABB(Vector3(4, 50, 60), Vector3(64, 128, 256)), "textures/numbers/1");

    auto patch = Node_getIPatch(patchNode);
    patch->scaleTextureNaturally();
    patch->controlPointsChanged();

    Node_setSelected(patchNode, true);

    auto bounds = algorithm::getTextureSpaceBounds(*patch);

    std::vector<Vector2> oldTexCoords;
    algorithm::foreachPatchVertex(*patch, [&](const PatchControl& ctrl) { oldTexCoords.push_back(ctrl.texcoord); });

    // Set the rotation in the registry, TexRotate will pick it up
    constexpr auto angle = 15.0f;
    registry::setValue("user/ui/textures/surfaceInspector/rotStep", angle);
    GlobalCommandSystem().executeCommand("TexRotate", { cmd::Argument(clockwise ? "1" : "-1") });

    // Rotate each texture coordinate around the patch center with a manual transform
    auto transform = Matrix3::getTranslation({ -bounds.origin.x(), -bounds.origin.y() });
    transform.premultiplyBy(Matrix3::getRotation(degrees_to_radians(clockwise ? angle : -angle)));
    transform.premultiplyBy(Matrix3::getTranslation({ bounds.origin.x(), bounds.origin.y() }));

    auto old = oldTexCoords.begin();
    algorithm::foreachPatchVertex(*patch, [&](const PatchControl& ctrl)
    {
        auto transformed = transform * (*old++);
        EXPECT_TRUE(math::isNear(transformed, ctrl.texcoord, 0.02))
            << "Transformed UV coords should be " << transformed << " but was " << ctrl.texcoord;
    });
}

}