X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;ds=sidebyside;f=source%2Frender%2Fplaceable.h;fp=source%2Frender%2Fplaceable.h;h=35999a06e1df5f30820511167d0c107d8941a955;hb=7aaec9a70b8d7733429bec043f8e33e02956f266;hp=0000000000000000000000000000000000000000;hpb=bec07999d95b76f4b47cffcc564d0cd0afc0435e;p=libs%2Fgl.git

diff --git a/source/render/placeable.h b/source/render/placeable.h
new file mode 100644
index 00000000..35999a06
--- /dev/null
+++ b/source/render/placeable.h
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+#ifndef MSP_GL_PLACEABLE_H_
+#define MSP_GL_PLACEABLE_H_
+
+#include "matrix.h"
+#include "renderable.h"
+
+namespace Msp {
+namespace GL {
+
+/**
+A base class for things that can be positioned and oriented in 3D space.
+*/
+class Placeable
+{
+protected:
+	Matrix matrix;
+
+	Placeable() { }
+public:
+	virtual ~Placeable() { }
+
+	virtual void set_matrix(const Matrix &);
+
+	/** Returns the Placeable's matrix.  This function returns a pointer for
+	compatibility with Renderable.  The returned pointer is never null. */
+	virtual const Matrix *get_matrix() const { return &matrix; }
+};
+
+
+class PlacedRenderable: public Renderable, public Placeable
+{
+protected:
+	PlacedRenderable() { }
+
+public:
+	/* Reimplement to clear ambiguity between Renderable and Placeable.  This
+	overrides both base classes' implementations. */
+	virtual const Matrix *get_matrix() const { return &matrix; }
+};
+
+} // namespace GL
+} // namespace Msp
+
+#endif