DrawableAxes Class Reference

An object that may be added to a Scene to display the XYZ axes. More...

#include <drawableaxes.h>

Inheritance diagram for DrawableAxes:

Collaboration diagram for DrawableAxes:

Public Member Functions
	DrawableAxes ()
void	initializeGL () override
	Called when this object is to be used with a new OpenGL context. Must be called before the first draw() call in the context. More...
void	draw (QMatrix4x4 projection, QMatrix4x4 transformation) override
	Performs OpenGL calls to draw the object, assuming a context is bound. More...
Public Member Functions inherited from AbstractDrawableGLObject
virtual	~AbstractDrawableGLObject ()

Protected Attributes
QSharedPointer< QOpenGLVertexArrayObject >	mVAO
QSharedPointer< QOpenGLBuffer >	mPos
QSharedPointer< QOpenGLBuffer >	mColor
QSharedPointer< QOpenGLShaderProgram >	mProgram

Detailed Description

An object that may be added to a Scene to display the XYZ axes.

DrawableAxes always draws itself at (0, 0, 0). It does not disable depth testing, so the axes could be completely covered up by a large object.

Constructor & Destructor Documentation

DrawableAxes()

DrawableAxes::DrawableAxes

(

)

Member Function Documentation

draw()

void DrawableAxes::draw ( QMatrix4x4  projection, QMatrix4x4  transformation  )

overridevirtual

Performs OpenGL calls to draw the object, assuming a context is bound.

Parameters

projection	The projection matrix used for the meshes.
transformation	The transformation matrix used for the meshes. The purpose of separating this from the projection is to allow a user to extract the translation and rotation components.

The gl_Position of a vertex V is given by (projection * transformation * V).

Implements AbstractDrawableGLObject.

initializeGL()

void DrawableAxes::initializeGL ( )

overridevirtual

Called when this object is to be used with a new OpenGL context. Must be called before the first draw() call in the context.

Implements AbstractDrawableGLObject.

Member Data Documentation

mColor

QSharedPointer<QOpenGLBuffer> DrawableAxes::mColor

protected

mPos

QSharedPointer<QOpenGLBuffer> DrawableAxes::mPos

protected

mProgram

QSharedPointer<QOpenGLShaderProgram> DrawableAxes::mProgram

protected

mVAO

QSharedPointer<QOpenGLVertexArrayObject> DrawableAxes::mVAO

protected

---

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

• WallsAndHoles/drawableaxes.h
• WallsAndHoles/drawableaxes.cpp