vrj::CameraProjection Class Reference

Projection class that simply takes a matrix for the camera position. More...

#include <vrj/Display/CameraProjection.h>

Inheritance diagram for vrj::CameraProjection:

[legend]Collaboration diagram for vrj::CameraProjection:

[legend]List of all members.

Public Member Functions
	CameraProjection ()
virtual void	config (jccl::ConfigElementPtr element)
	Configures the projection.
void	setVerticalFOV (const float fov)
virtual void	calcViewMatrix (const gmtl::Matrix44f &cameraPos, const float scaleFactor)
	Calculate the viewmatrix and frustum for the camera Calculates a perspective transform for the given settings.
virtual std::ostream &	outStream (std::ostream &out, const unsigned int indentLevel=0)
	Virtual output oporators.
Public Attributes
float	mVertFOV

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Detailed Description

Projection class that simply takes a matrix for the camera position.

Definition at line 51 of file CameraProjection.h.

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Constructor & Destructor Documentation

vrj::CameraProjection::CameraProjection

(

)

[inline]

Definition at line 54 of file CameraProjection.h.

                      : mVertFOV(60.0f)
   {
      //mType = Projection::SIM;
   }

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Member Function Documentation

void vrj::CameraProjection::config

(

jccl::ConfigElementPtr

element

)

[virtual]

Configures the projection.

The default implementation does nothing.

Reimplemented from vrj::Projection.

Definition at line 49 of file CameraProjection.cpp.

References vrj::Projection::config().

{
   Projection::config(element);
}

void vrj::CameraProjection::setVerticalFOV

(

const float

fov

)

[inline]

Definition at line 61 of file CameraProjection.h.

   {
      mVertFOV = fov;
   }

void vrj::CameraProjection::calcViewMatrix	(	const gmtl::Matrix44f &	cameraPos,
		const float	scaleFactor
	)			[virtual]

Calculate the viewmatrix and frustum for the camera Calculates a perspective transform for the given settings.

Calculates a perspective transform for the given settings. Auto-calculates aspect ratio from the current size of the window and viewport.

Implements vrj::Projection.

Definition at line 58 of file CameraProjection.cpp.

References vrj::Viewport::getDisplay(), vrj::Viewport::getOriginAndSize(), vrj::Display::getOriginAndSize(), vrj::Projection::getViewport(), vrj::Projection::mFarDist, vrj::Projection::mFrustum, vrj::Projection::mNearDist, mVertFOV, vrj::Projection::mViewMat, and vrj::Frustum::set().

{
   boost::ignore_unused_variable_warning(scaleFactor);
   mViewMat = cameraPos;

   gmtl::Vec3f camera_trans = gmtl::makeTrans<gmtl::Vec3f>(cameraPos);
   vprDEBUG(vprDBG_ALL, vprDBG_DETAILED_LVL) << "calcView: Cam pos:" << camera_trans << std::endl << vprDEBUG_FLUSH;

   int win_xo, win_yo, win_xs, win_ys;  // origin and size of display window
   float vp_xo, vp_yo, vp_xs, vp_ys;  // origin and size of viewport
   float width, height;
   float aspect_ratio;

   getViewport()->getDisplay()->getOriginAndSize(win_xo,win_yo, win_xs, win_ys);
   getViewport()->getOriginAndSize( vp_xo, vp_yo, vp_xs, vp_ys );
   width = float(win_xs) * vp_xs;
   height = float(win_ys) * vp_ys;

   aspect_ratio = (width/height);

   // Calculate frustum
   float top, right;
   top = gmtl::Math::tan( gmtl::Math::deg2Rad(mVertFOV/2.0f) ) * mNearDist;     // Calculate the top based on fovy
   right = aspect_ratio * top;

   // Calculate the frustum to use for the camera
   mFrustum.set(-right, right, -top, top, mNearDist, mFarDist);
}

std::ostream & vrj::CameraProjection::outStream	(	std::ostream &	out,
		const unsigned int	indentLevel = 0
	)			[virtual]

Virtual output oporators.

Every class derived from us shoudl just define this, and the opertetor<< will "just work".

Reimplemented from vrj::Projection.

Definition at line 88 of file CameraProjection.cpp.

References vrj::Projection::outStream().

{
//   const int pad_width_dot(20 - indentLevel);
   out.setf(std::ios::left);

   const std::string indent_text(indentLevel, ' ');

   out << indent_text << "vrj::CameraProjection:\n";

   return Projection::outStream(out, indentLevel);
}

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Member Data Documentation

float vrj::CameraProjection::mVertFOV

Definition at line 80 of file CameraProjection.h.

Referenced by calcViewMatrix().

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The documentation for this class was generated from the following files:

• CameraProjection.h
• CameraProjection.cpp

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