#include <gtest/gtest.h>
#include "vde/core/transform.h"

using namespace vde::core;

TEST(TransformTest, Translate) {
    auto T = translate(1, 2, 3);
    Point3D p(0, 0, 0);
    Point3D q = T * p;
    EXPECT_DOUBLE_EQ(q.x(), 1.0);
    EXPECT_DOUBLE_EQ(q.y(), 2.0);
    EXPECT_DOUBLE_EQ(q.z(), 3.0);
}

TEST(TransformTest, Scale) {
    auto S = scale(2.0);
    Point3D p(1, 2, 3);
    Point3D q = S * p;
    EXPECT_DOUBLE_EQ(q.x(), 2.0);
    EXPECT_DOUBLE_EQ(q.y(), 4.0);
    EXPECT_DOUBLE_EQ(q.z(), 6.0);
}