ISceneCollisionManager::getCollisionPoint need 5 parameters?

[mybiandou]

I have a question when I use ISceneCollisionManager.

I use ISceneCollisionManager::getCollisionPoint(ray, collisionTriangles, point, triangle)

The compiler tell me it need five parameters

Though the document http://irrlicht.sourceforge.net/docu/cl ... effc49d155 shows it only need 4 parameters as I give

But when I check my Irrlicht include file C:\3rd-libs\irrlicht-1.6\source\Irrlicht\CSceneCollisionManager.h , I found it really require five parameter, the declaration is

Code: Select all

		//! Finds the collision point of a line and lots of triangles, if there is one.
		virtual bool getCollisionPoint(const core::line3d<f32>& ray,
			ITriangleSelector* selector, core::vector3df& outCollisionPoint,
			core::triangle3df& outTriangle,
			const ISceneNode* & outNode);

The last outNode is a const pointer, so it seems that it should be an input parameter, what does the fifth parameter mean? How can I use it?

Thank you for your kindly help

[CuteAlien]

It is an out parameter. You get a reference to a pointer for an unchangeable ISceneNode. You pass in "outNode" which is declared like this:
const scene::ISceneNode* outNode = 0;

Check ISceneCollisionManager.h for a more up-to-date documentation or use doxygen to create a local documentation (check scripts/doc for doxygen.exe and config scripts). Sorry for slightly outdated website-docs, I hope it will get fixed soon (I can't do it, because I don't know yet how to do that).

[mybiandou]

That means I can set it to NULL if I need not it.

Thank you very much.

It is an out parameter. You get a reference to a pointer for an unchangeable ISceneNode. You pass in "outNode" which is declared like this:
const scene::ISceneNode* outNode = 0;

Check ISceneCollisionManager.h for a more up-to-date documentation or use doxygen to create a local documentation (check scripts/doc for doxygen.exe and config scripts). Sorry for slightly outdated website-docs, I hope it will get fixed soon (I can't do it, because I don't know yet how to do that).