Copy irrlichtmt to <root>/irr/

irr/src/CBillboardSceneNode.h

@@ -0,0 +1,113 @@
+// Copyright (C) 2002-2012 Nikolaus Gebhardt
+// This file is part of the "Irrlicht Engine".
+// For conditions of distribution and use, see copyright notice in irrlicht.h
+
+#pragma once
+
+#include "IBillboardSceneNode.h"
+#include "SMeshBuffer.h"
+
+namespace irr
+{
+namespace scene
+{
+
+//! Scene node which is a billboard. A billboard is like a 3d sprite: A 2d element,
+//! which always looks to the camera.
+class CBillboardSceneNode : virtual public IBillboardSceneNode
+{
+public:
+	//! constructor
+	CBillboardSceneNode(ISceneNode *parent, ISceneManager *mgr, s32 id,
+			const core::vector3df &position, const core::dimension2d<f32> &size,
+			video::SColor colorTop = video::SColor(0xFFFFFFFF),
+			video::SColor colorBottom = video::SColor(0xFFFFFFFF));
+
+	virtual ~CBillboardSceneNode();
+
+	//! pre render event
+	void OnRegisterSceneNode() override;
+
+	//! render
+	void render() override;
+
+	//! returns the axis aligned bounding box of this node
+	const core::aabbox3d<f32> &getBoundingBox() const override;
+
+	//! sets the size of the billboard
+	void setSize(const core::dimension2d<f32> &size) override;
+
+	//! Sets the widths of the top and bottom edges of the billboard independently.
+	void setSize(f32 height, f32 bottomEdgeWidth, f32 topEdgeWidth) override;
+
+	//! gets the size of the billboard
+	const core::dimension2d<f32> &getSize() const override;
+
+	//! Gets the widths of the top and bottom edges of the billboard.
+	void getSize(f32 &height, f32 &bottomEdgeWidth, f32 &topEdgeWidth) const override;
+
+	video::SMaterial &getMaterial(u32 i) override;
+
+	//! returns amount of materials used by this scene node.
+	u32 getMaterialCount() const override;
+
+	//! Set the color of all vertices of the billboard
+	//! \param overallColor: the color to set
+	void setColor(const video::SColor &overallColor) override;
+
+	//! Set the color of the top and bottom vertices of the billboard
+	//! \param topColor: the color to set the top vertices
+	//! \param bottomColor: the color to set the bottom vertices
+	virtual void setColor(const video::SColor &topColor,
+			const video::SColor &bottomColor) override;
+
+	//! Gets the color of the top and bottom vertices of the billboard
+	//! \param[out] topColor: stores the color of the top vertices
+	//! \param[out] bottomColor: stores the color of the bottom vertices
+	virtual void getColor(video::SColor &topColor,
+			video::SColor &bottomColor) const override;
+
+	//! Get the real boundingbox used by the billboard (which depends on the active camera)
+	const core::aabbox3d<f32> &getTransformedBillboardBoundingBox(const irr::scene::ICameraSceneNode *camera) override;
+
+	//! Get the amount of mesh buffers.
+	u32 getMeshBufferCount() const override
+	{
+		return Buffer ? 1 : 0;
+	}
+
+	//! Get pointer to the mesh buffer.
+	IMeshBuffer *getMeshBuffer(u32 nr) const override
+	{
+		if (nr == 0)
+			return Buffer;
+		return 0;
+	}
+
+	//! Returns type of the scene node
+	ESCENE_NODE_TYPE getType() const override { return ESNT_BILLBOARD; }
+
+	//! Creates a clone of this scene node and its children.
+	ISceneNode *clone(ISceneNode *newParent = 0, ISceneManager *newManager = 0) override;
+
+protected:
+	void updateMesh(const irr::scene::ICameraSceneNode *camera);
+
+private:
+	//! Size.Width is the bottom edge width
+	core::dimension2d<f32> Size;
+	f32 TopEdgeWidth;
+
+	//! BoundingBox which is large enough to contain the billboard independent of the camera
+	// TODO: BUG - still can be wrong with scaling < 1. Billboards should calculate relative coordinates for their mesh
+	// and then use the node-scaling. But needs some work...
+	/** Note that we can't use the real boundingbox for culling because at that point
+		the camera which is used to calculate the billboard is not yet updated. So we only
+		know the real boundingbox after rendering - which is too late for culling. */
+	core::aabbox3d<f32> BBoxSafe;
+
+	scene::SMeshBuffer *Buffer;
+};
+
+} // end namespace scene
+} // end namespace irr