Initial commit

include/Spectre/Scene/Camera2D.h

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+
+#ifndef SPECTRE_SCENE_CAMERA2D_H
+#define SPECTRE_SCENE_CAMERA2D_H
+
+
+#include "ICamera.h"
+#include <Spectre/Math/Transform.h>
+
+// 2D camera implementation.
+
+// TODO: Support unprojection, from Screenspace -> Worldspace.
+
+// TODO: Zoom is implemented using a scale matrix. 
+// It's abit weird to control. Must be a better solution.
+
+class Camera2D : public ICamera
+{
+public :
+	Camera2D();
+	Camera2D(const Vector2f& position, const Vector2f& size);
+
+	void reset(const Vector2f& position, const Vector2f& size);
+
+	// Position
+
+	void setPosition(float x, float y);
+	void setPosition(const Vector2f& position);
+	const Vector2f& getPosition() const;
+
+	void move(float x, float y);
+	void move(const Vector2f& vec);
+	
+	void moveUp(float delta);
+	void moveRight(float delta);
+
+	// Size
+
+	void setSize(unsigned int w, unsigned int h);
+	void setSize(const Vector2u& size);
+	const Vector2u& getSize() const;
+
+	// Zoom
+
+	void setZoom(float factor);
+	void zoom(float factor);
+
+	// Rotation
+
+	void setRotation(float angle);
+	void rotate(float delta);
+
+	float getRotation() const;
+
+	// Current view matrix.
+	const Matrix4f& getViewMatrix() const;
+
+	const Matrix4f& getProjectionMatrix() const;
+
+	const Transform& getTransform() const;
+
+protected :
+
+	Vector2f	m_position;
+	float		m_rotation;
+	float		m_zoom;
+
+	Vector2u	m_size;
+
+	// View matrix. should transform world <-> eye space.
+	mutable Transform	m_view;
+	mutable bool		m_viewNeedsUpdate;
+
+	// Projection matrix. transforms eye -> Clipping space.
+	mutable Matrix4f	m_proj;
+	mutable bool		m_projNeedsUpdate;
+};
+
+#endif /* SPECTRE_SCENE_CAMERA2D_H */

include/Spectre/Scene/ICamera.h

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+
+#ifndef SPECTRE_SCENE_ICAMERA_H
+#define SPECTRE_SCENE_ICAMERA_H
+
+#include <Spectre/Math/Matrix4.h>
+
+// Camera interface.
+class ICamera
+{
+public :
+	virtual ~ICamera() {};
+
+	virtual const Matrix4f& getViewMatrix() const = 0;
+
+	virtual const Matrix4f& getProjectionMatrix() const = 0;
+};
+
+#endif /* SPECTRE_SCENE_ICAMERA_H */