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framework/geometry/frustum.h

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+/* Copyright (c) 2019-2024, Sascha Willems
+ *
+ * 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.
+ */
+
+#pragma once
+
+#include <array>
+
+#include "common/error.h"
+
+#include "common/glm_common.h"
+
+namespace vkb
+{
+enum Side
+{
+	LEFT   = 0,
+	RIGHT  = 1,
+	TOP    = 2,
+	BOTTOM = 3,
+	BACK   = 4,
+	FRONT  = 5
+};
+
+/**
+ * @brief Represents a matrix by extracting its planes. Responsible for doing
+ * intersection tests
+ */
+class Frustum
+{
+  public:
+	/**
+	 * @brief Updates the frustums planes based on a matrix
+	 * @param matrix The matrix to update the frustum on
+	 */
+	void update(const glm::mat4 &matrix);
+
+	/**
+	 * @brief Checks if a sphere is inside the Frustum
+	 * @param pos The center of the sphere
+	 * @param radius The radius of the sphere
+	 */
+	bool check_sphere(glm::vec3 pos, float radius);
+
+	const std::array<glm::vec4, 6> &get_planes() const;
+
+  private:
+	std::array<glm::vec4, 6> planes;
+};
+}        // namespace vkb