MorphableCamera class

openVulkanoCpp/Scene/MorphableCamera.cpp

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+/*
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at https://mozilla.org/MPL/2.0/.
+ */
+
+#include "MorphableCamera.hpp"
+
+namespace OpenVulkano::Scene
+{
+	namespace
+	{
+		Math::Matrix4f BlendMatrices(const Math::Matrix4f& mat1, const Math::Matrix4f& mat2, float t)
+		{
+			Math::Matrix4f result;
+			for (int i = 0; i < 4; ++i)
+			{
+				for (int j = 0; j < 4; ++j) { result[i][j] = glm::mix(mat1[i][j], mat2[i][j], t); }
+			}
+			return result;
+		}
+	}
+	void MorphableCamera::UpdateProjectionMatrix()
+	{
+		PerspectiveCamera::UpdateProjectionMatrix();
+		float aspectH = m_aspect;
+		float aspectV = 1;
+		m_orthoMatrix = Math::Utils::orthoRH_ZO(-aspectH, aspectH, -aspectV, aspectV, m_nearPlane, m_farPlane);
+		m_projection = BlendMatrices(m_projection, m_orthoMatrix, m_morphState);
+		UpdateViewProjectionMatrix();
+	}
+}

openVulkanoCpp/Scene/MorphableCamera.hpp

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+/*
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at https://mozilla.org/MPL/2.0/.
+ */
+#pragma once
+
+#include "Camera.hpp"
+#include "Math/Math.hpp"
+
+namespace OpenVulkano::Scene
+{
+	class MorphableCamera : public PerspectiveCamera
+	{
+		float m_morphState;
+		Math::Matrix4f m_orthoMatrix;
+
+	public:
+		MorphableCamera(float fovDegrees, float width, float height, float nearPlane, float farPlane)
+		    : PerspectiveCamera(fovDegrees, nearPlane, farPlane, width, height), m_morphState(0.0f)
+		{
+			UpdateProjectionMatrix();
+		}
+
+		void SetMorphState(float state)
+		{
+			m_morphState = Math::Utils::clamp(state, 0.0f, 1.0f);
+			UpdateProjectionMatrix();
+		}
+
+		void UpdateProjectionMatrix() override;
+	};
+}