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framework/scene_graph/components/perspective_camera.cpp

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+/* Copyright (c) 2019-2024, Arm Limited and Contributors
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Licensed under the Apache License, Version 2.0 the "License";
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "perspective_camera.h"
+
+#include <glm/gtc/matrix_transform.hpp>
+
+namespace vkb
+{
+namespace sg
+{
+PerspectiveCamera::PerspectiveCamera(const std::string &name) :
+    Camera{name}
+{}
+
+void PerspectiveCamera::set_field_of_view(float new_fov)
+{
+	fov = new_fov;
+}
+
+float PerspectiveCamera::get_far_plane() const
+{
+	return far_plane;
+}
+
+void PerspectiveCamera::set_far_plane(float zfar)
+{
+	far_plane = zfar;
+}
+
+float PerspectiveCamera::get_near_plane() const
+{
+	return near_plane;
+}
+
+void PerspectiveCamera::set_near_plane(float znear)
+{
+	near_plane = znear;
+}
+
+void PerspectiveCamera::set_aspect_ratio(float new_aspect_ratio)
+{
+	aspect_ratio = new_aspect_ratio;
+}
+
+float PerspectiveCamera::get_field_of_view()
+{
+	return fov;
+}
+
+float PerspectiveCamera::get_aspect_ratio()
+{
+	return aspect_ratio;
+}
+
+glm::mat4 PerspectiveCamera::get_projection()
+{
+	// Note: Using reversed depth-buffer for increased precision, so Znear and Zfar are flipped
+	return glm::perspective(fov, aspect_ratio, far_plane, near_plane);
+}
+}        // namespace sg
+}        // namespace vkb