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Add unit tests for Camera2D
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Rama Del Maestro
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318
tests/scene/test_camera_2d.h
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318
tests/scene/test_camera_2d.h
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/**************************************************************************/
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/* test_camera_2d.h */
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/**************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* https://godotengine.org */
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/**************************************************************************/
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/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
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/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/**************************************************************************/
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#ifndef TEST_CAMERA_2D_H
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#define TEST_CAMERA_2D_H
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#include "scene/2d/camera_2d.h"
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#include "scene/main/viewport.h"
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#include "scene/main/window.h"
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#include "tests/test_macros.h"
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namespace TestCamera2D {
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TEST_CASE("[SceneTree][Camera2D] Getters and setters") {
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Camera2D *test_camera = memnew(Camera2D);
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SUBCASE("AnchorMode") {
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test_camera->set_anchor_mode(Camera2D::AnchorMode::ANCHOR_MODE_FIXED_TOP_LEFT);
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CHECK(test_camera->get_anchor_mode() == Camera2D::AnchorMode::ANCHOR_MODE_FIXED_TOP_LEFT);
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test_camera->set_anchor_mode(Camera2D::AnchorMode::ANCHOR_MODE_DRAG_CENTER);
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CHECK(test_camera->get_anchor_mode() == Camera2D::AnchorMode::ANCHOR_MODE_DRAG_CENTER);
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}
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SUBCASE("ProcessCallback") {
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test_camera->set_process_callback(Camera2D::Camera2DProcessCallback::CAMERA2D_PROCESS_PHYSICS);
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CHECK(test_camera->get_process_callback() == Camera2D::Camera2DProcessCallback::CAMERA2D_PROCESS_PHYSICS);
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test_camera->set_process_callback(Camera2D::Camera2DProcessCallback::CAMERA2D_PROCESS_IDLE);
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CHECK(test_camera->get_process_callback() == Camera2D::Camera2DProcessCallback::CAMERA2D_PROCESS_IDLE);
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}
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SUBCASE("Drag") {
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constexpr float drag_left_margin = 0.8f;
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constexpr float drag_top_margin = 0.8f;
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constexpr float drag_right_margin = 0.8f;
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constexpr float drag_bottom_margin = 0.8f;
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constexpr float drag_horizontal_offset1 = 0.5f;
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constexpr float drag_horizontal_offset2 = -0.5f;
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constexpr float drag_vertical_offset1 = 0.5f;
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constexpr float drag_vertical_offset2 = -0.5f;
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test_camera->set_drag_margin(SIDE_LEFT, drag_left_margin);
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CHECK(test_camera->get_drag_margin(SIDE_LEFT) == drag_left_margin);
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test_camera->set_drag_margin(SIDE_TOP, drag_top_margin);
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CHECK(test_camera->get_drag_margin(SIDE_TOP) == drag_top_margin);
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test_camera->set_drag_margin(SIDE_RIGHT, drag_right_margin);
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CHECK(test_camera->get_drag_margin(SIDE_RIGHT) == drag_right_margin);
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test_camera->set_drag_margin(SIDE_BOTTOM, drag_bottom_margin);
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CHECK(test_camera->get_drag_margin(SIDE_BOTTOM) == drag_bottom_margin);
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test_camera->set_drag_horizontal_enabled(true);
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CHECK(test_camera->is_drag_horizontal_enabled());
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test_camera->set_drag_horizontal_enabled(false);
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CHECK_FALSE(test_camera->is_drag_horizontal_enabled());
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test_camera->set_drag_horizontal_offset(drag_horizontal_offset1);
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CHECK(test_camera->get_drag_horizontal_offset() == drag_horizontal_offset1);
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test_camera->set_drag_horizontal_offset(drag_horizontal_offset2);
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CHECK(test_camera->get_drag_horizontal_offset() == drag_horizontal_offset2);
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test_camera->set_drag_vertical_enabled(true);
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CHECK(test_camera->is_drag_vertical_enabled());
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test_camera->set_drag_vertical_enabled(false);
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CHECK_FALSE(test_camera->is_drag_vertical_enabled());
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test_camera->set_drag_vertical_offset(drag_vertical_offset1);
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CHECK(test_camera->get_drag_vertical_offset() == drag_vertical_offset1);
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test_camera->set_drag_vertical_offset(drag_vertical_offset2);
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CHECK(test_camera->get_drag_vertical_offset() == drag_vertical_offset2);
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}
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SUBCASE("Drawing") {
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test_camera->set_margin_drawing_enabled(true);
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CHECK(test_camera->is_margin_drawing_enabled());
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test_camera->set_margin_drawing_enabled(false);
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CHECK_FALSE(test_camera->is_margin_drawing_enabled());
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test_camera->set_limit_drawing_enabled(true);
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CHECK(test_camera->is_limit_drawing_enabled());
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test_camera->set_limit_drawing_enabled(false);
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CHECK_FALSE(test_camera->is_limit_drawing_enabled());
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test_camera->set_screen_drawing_enabled(true);
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CHECK(test_camera->is_screen_drawing_enabled());
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test_camera->set_screen_drawing_enabled(false);
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CHECK_FALSE(test_camera->is_screen_drawing_enabled());
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}
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SUBCASE("Enabled") {
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test_camera->set_enabled(true);
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CHECK(test_camera->is_enabled());
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test_camera->set_enabled(false);
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CHECK_FALSE(test_camera->is_enabled());
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}
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SUBCASE("Rotation") {
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constexpr float rotation_smoothing_speed = 20.0f;
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test_camera->set_ignore_rotation(true);
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CHECK(test_camera->is_ignoring_rotation());
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test_camera->set_ignore_rotation(false);
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CHECK_FALSE(test_camera->is_ignoring_rotation());
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test_camera->set_rotation_smoothing_enabled(true);
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CHECK(test_camera->is_rotation_smoothing_enabled());
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test_camera->set_rotation_smoothing_speed(rotation_smoothing_speed);
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CHECK(test_camera->get_rotation_smoothing_speed() == rotation_smoothing_speed);
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}
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SUBCASE("Zoom") {
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const Vector2 zoom = Vector2(4, 4);
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test_camera->set_zoom(zoom);
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CHECK(test_camera->get_zoom() == zoom);
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}
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SUBCASE("Offset") {
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const Vector2 offset = Vector2(100, 100);
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test_camera->set_offset(offset);
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CHECK(test_camera->get_offset() == offset);
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}
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SUBCASE("Limit") {
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constexpr int limit_left = 100;
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constexpr int limit_top = 100;
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constexpr int limit_right = 100;
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constexpr int limit_bottom = 100;
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test_camera->set_limit_smoothing_enabled(true);
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CHECK(test_camera->is_limit_smoothing_enabled());
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test_camera->set_limit_smoothing_enabled(false);
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CHECK_FALSE(test_camera->is_limit_smoothing_enabled());
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test_camera->set_limit(SIDE_LEFT, limit_left);
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CHECK(test_camera->get_limit(SIDE_LEFT) == limit_left);
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test_camera->set_limit(SIDE_TOP, limit_top);
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CHECK(test_camera->get_limit(SIDE_TOP) == limit_top);
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test_camera->set_limit(SIDE_RIGHT, limit_right);
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CHECK(test_camera->get_limit(SIDE_RIGHT) == limit_right);
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test_camera->set_limit(SIDE_BOTTOM, limit_bottom);
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CHECK(test_camera->get_limit(SIDE_BOTTOM) == limit_bottom);
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}
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SUBCASE("Position") {
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constexpr float smoothing_speed = 20.0f;
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test_camera->set_position_smoothing_enabled(true);
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CHECK(test_camera->is_position_smoothing_enabled());
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test_camera->set_position_smoothing_speed(smoothing_speed);
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CHECK(test_camera->get_position_smoothing_speed() == smoothing_speed);
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}
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memdelete(test_camera);
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}
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TEST_CASE("[SceneTree][Camera2D] Camera positioning") {
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SubViewport *mock_viewport = memnew(SubViewport);
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Camera2D *test_camera = memnew(Camera2D);
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mock_viewport->set_size(Vector2(400, 200));
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SceneTree::get_singleton()->get_root()->add_child(mock_viewport);
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mock_viewport->add_child(test_camera);
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SUBCASE("Anchor mode") {
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test_camera->set_anchor_mode(Camera2D::ANCHOR_MODE_DRAG_CENTER);
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CHECK(test_camera->get_camera_screen_center().is_equal_approx(Vector2(0, 0)));
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CHECK(test_camera->get_camera_position().is_equal_approx(Vector2(0, 0)));
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test_camera->set_anchor_mode(Camera2D::ANCHOR_MODE_FIXED_TOP_LEFT);
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CHECK(test_camera->get_camera_screen_center().is_equal_approx(Vector2(200, 100)));
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CHECK(test_camera->get_camera_position().is_equal_approx(Vector2(0, 0)));
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}
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SUBCASE("Offset") {
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test_camera->set_offset(Vector2(100, 100));
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CHECK(test_camera->get_camera_screen_center().is_equal_approx(Vector2(100, 100)));
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CHECK(test_camera->get_camera_position().is_equal_approx(Vector2(0, 0)));
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test_camera->set_offset(Vector2(-100, 300));
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CHECK(test_camera->get_camera_screen_center().is_equal_approx(Vector2(-100, 300)));
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CHECK(test_camera->get_camera_position().is_equal_approx(Vector2(0, 0)));
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test_camera->set_offset(Vector2(0, 0));
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CHECK(test_camera->get_camera_screen_center().is_equal_approx(Vector2(0, 0)));
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CHECK(test_camera->get_camera_position().is_equal_approx(Vector2(0, 0)));
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}
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SUBCASE("Limits") {
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test_camera->set_limit(SIDE_LEFT, 100);
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test_camera->set_limit(SIDE_TOP, 50);
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CHECK(test_camera->get_camera_screen_center().is_equal_approx(Vector2(300, 150)));
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CHECK(test_camera->get_camera_position().is_equal_approx(Vector2(0, 0)));
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test_camera->set_limit(SIDE_LEFT, 0);
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test_camera->set_limit(SIDE_TOP, 0);
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CHECK(test_camera->get_camera_screen_center().is_equal_approx(Vector2(200, 100)));
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CHECK(test_camera->get_camera_position().is_equal_approx(Vector2(0, 0)));
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}
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SUBCASE("Drag") {
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CHECK(test_camera->get_camera_screen_center().is_equal_approx(Vector2(0, 0)));
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// horizontal
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test_camera->set_drag_horizontal_enabled(true);
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test_camera->set_drag_margin(SIDE_RIGHT, 0.5);
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test_camera->set_position(Vector2(100, 100));
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test_camera->force_update_scroll();
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CHECK(test_camera->get_camera_position().is_equal_approx(Vector2(0, 100)));
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CHECK(test_camera->get_camera_screen_center().is_equal_approx(Vector2(0, 100)));
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test_camera->set_position(Vector2(101, 101));
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test_camera->force_update_scroll();
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CHECK(test_camera->get_camera_position().is_equal_approx(Vector2(1, 101)));
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CHECK(test_camera->get_camera_screen_center().is_equal_approx(Vector2(1, 101)));
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// test align
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test_camera->set_position(Vector2(0, 0));
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test_camera->align();
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CHECK(test_camera->get_camera_position().is_equal_approx(Vector2(0, 0)));
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CHECK(test_camera->get_camera_screen_center().is_equal_approx(Vector2(0, 0)));
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// vertical
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test_camera->set_drag_vertical_enabled(true);
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test_camera->set_drag_horizontal_enabled(false);
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test_camera->set_drag_margin(SIDE_TOP, 0.3);
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test_camera->set_position(Vector2(200, -20));
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test_camera->force_update_scroll();
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CHECK(test_camera->get_camera_position().is_equal_approx(Vector2(200, 0)));
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CHECK(test_camera->get_camera_screen_center().is_equal_approx(Vector2(200, 0)));
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test_camera->set_position(Vector2(250, -55));
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test_camera->force_update_scroll();
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CHECK(test_camera->get_camera_position().is_equal_approx(Vector2(250, -25)));
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CHECK(test_camera->get_camera_screen_center().is_equal_approx(Vector2(250, -25)));
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}
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memdelete(test_camera);
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memdelete(mock_viewport);
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}
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TEST_CASE("[SceneTree][Camera2D] Transforms") {
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SubViewport *mock_viewport = memnew(SubViewport);
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Camera2D *test_camera = memnew(Camera2D);
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mock_viewport->set_size(Vector2(400, 200));
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SceneTree::get_singleton()->get_root()->add_child(mock_viewport);
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mock_viewport->add_child(test_camera);
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SUBCASE("Default camera") {
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Transform2D xform = mock_viewport->get_canvas_transform();
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// x,y are basis vectors, origin = screen center
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Transform2D test_xform = Transform2D(Vector2(1, 0), Vector2(0, 1), Vector2(200, 100));
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CHECK(xform.is_equal_approx(test_xform));
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}
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SUBCASE("Zoom") {
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test_camera->set_zoom(Vector2(0.5, 2));
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Transform2D xform = mock_viewport->get_canvas_transform();
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Transform2D test_xform = Transform2D(Vector2(0.5, 0), Vector2(0, 2), Vector2(200, 100));
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CHECK(xform.is_equal_approx(test_xform));
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test_camera->set_zoom(Vector2(10, 10));
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xform = mock_viewport->get_canvas_transform();
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test_xform = Transform2D(Vector2(10, 0), Vector2(0, 10), Vector2(200, 100));
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CHECK(xform.is_equal_approx(test_xform));
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test_camera->set_zoom(Vector2(1, 1));
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xform = mock_viewport->get_canvas_transform();
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test_xform = Transform2D(Vector2(1, 0), Vector2(0, 1), Vector2(200, 100));
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CHECK(xform.is_equal_approx(test_xform));
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}
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SUBCASE("Rotation") {
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test_camera->set_rotation(Math_PI / 2);
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Transform2D xform = mock_viewport->get_canvas_transform();
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Transform2D test_xform = Transform2D(Vector2(1, 0), Vector2(0, 1), Vector2(200, 100));
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CHECK(xform.is_equal_approx(test_xform));
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test_camera->set_ignore_rotation(false);
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xform = mock_viewport->get_canvas_transform();
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test_xform = Transform2D(Vector2(0, -1), Vector2(1, 0), Vector2(200, 100));
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CHECK(xform.is_equal_approx(test_xform));
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test_camera->set_rotation(-1 * Math_PI);
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test_camera->force_update_scroll();
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xform = mock_viewport->get_canvas_transform();
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test_xform = Transform2D(Vector2(-1, 0), Vector2(0, -1), Vector2(200, 100));
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CHECK(xform.is_equal_approx(test_xform));
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test_camera->set_rotation(0);
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test_camera->force_update_scroll();
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xform = mock_viewport->get_canvas_transform();
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test_xform = Transform2D(Vector2(1, 0), Vector2(0, 1), Vector2(200, 100));
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CHECK(xform.is_equal_approx(test_xform));
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}
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memdelete(test_camera);
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memdelete(mock_viewport);
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}
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} // namespace TestCamera2D
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#endif // TEST_CAMERA_2D_H
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@ -99,6 +99,7 @@
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#include "tests/scene/test_arraymesh.h"
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#include "tests/scene/test_audio_stream_wav.h"
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#include "tests/scene/test_bit_map.h"
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#include "tests/scene/test_camera_2d.h"
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#include "tests/scene/test_code_edit.h"
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#include "tests/scene/test_color_picker.h"
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#include "tests/scene/test_control.h"
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