#include "Camera_Test.h"
CPPUNIT_TEST_SUITE_REGISTRATION(Camera_Test);

#include "camera.h"

void Camera_Test::test_camera_definition()
{
    CameraDefinition* cam;
    cam = cameraCreateDefinition();

    cameraSetLocationCoords(cam, 0.0, 1.0, 1.0);
    cameraSetTargetCoords(cam, 0.0, 0.0, 0.0);

    ck_assert_vector_values(cameraGetLocation(cam), 0.0, 1.0, 1.0);
    ck_assert_vector_values(cameraGetTarget(cam), 0.0, 0.0, 0.0);

    cameraDeleteDefinition(cam);
}

void Camera_Test::test_camera_projection()
{
    CameraDefinition* cam;
    cam = cameraCreateDefinition();

    cameraSetLocationCoords(cam, 0.0, 1.0, 1.0);
    cameraSetTargetCoords(cam, 0.0, 0.0, 0.0);

    /* Test the reversibility of projection */
    Vector3 point = cameraProject(cam, v3(12.0, 5.2, -6.3));
    point = cameraUnproject(cam, point);
    ck_assert_vector_values(point, 12.0, 5.2, -6.3);
    point = cameraProject(cam, v3(-25.1, 8.3, 1.3));
    point = cameraUnproject(cam, point);
    ck_assert_vector_values(point, -25.1, 8.3, 1.3);

    cameraDeleteDefinition(cam);
}

void Camera_Test::test_camera_depth()
{
    CameraDefinition* cam;
    cam = cameraCreateDefinition();

    cameraSetLocationCoords(cam, 0.0, 0.0, 0.0);
    cameraSetTargetCoords(cam, 1.0, 0.0, 0.0);

    /* Test the real depth getter */
    Vector3 point = cameraProject(cam, v3(12.5, 0.0, 0.0));
    ck_assert_double_eq(cameraGetRealDepth(cam, point), 12.5);
    point = cameraProject(cam, v3(12.5, 8.0, -3.0));
    ck_assert_double_eq(cameraGetRealDepth(cam, point), 12.5);
    point = cameraProject(cam, v3(12.5, 12.0, 58.0));
    ck_assert_double_eq(cameraGetRealDepth(cam, point), 12.5);

    cameraDeleteDefinition(cam);
}