omni::visual::Rectangle Struct Reference

Visualizer helper class for drawing a rectangle in an OpenGL context. More...

#include <Rectangle.h>

Static Public Member Functions
static void	draw (float _left=-0.5, float _right=0.5, float _top=0.5, float _bottom=-0.5)
	Draw rectangle from border coordinates. More...
static void	draw (QSize const &_size)
static void	draw (QRectF const &)
	Draw rectangle from given QRectF. More...
static void	drawFlipped (float _left=-0.5, float _right=0.5, float _top=0.5, float _bottom=-0.5)
	Draw rectangle from border coordinates, flipped on y axis version. More...
static void	drawFlipped (QRectF const &)
	Draw rectangle from given QRectF, flipped on y axis version. More...

Detailed Description

Visualizer helper class for drawing a rectangle in an OpenGL context.

Member Function Documentation

void omni::visual::Rectangle::draw ( float  _left = -0.5, float  _right = 0.5, float  _top = 0.5, float  _bottom = -0.5  )

static

Draw rectangle from border coordinates.

    {
      glBegin(GL_QUADS);
      {
        glTexCoord2f(0.0f, 1.0f);
        glVertex2f(_left, _bottom);
        glTexCoord2f(1.0f, 1.0f);
        glVertex2f(_right, _bottom);
        glTexCoord2f(1.0f, 0.0f);
        glVertex2f(_right, _top);
        glTexCoord2f(0.0f, 0.0f);
        glVertex2f(_left, _top);
      }
      glEnd();
    }

void omni::visual::Rectangle::draw ( QSize const &  _size )

static

                                           {
      withCurrentContext([&](QOpenGLFunctions& _) {
        glBegin(GL_QUADS);
        {
          int _w = _size.width();
          int _h = _size.height();
          glTexCoord2f(0.0f, _h);
          glVertex2f(-0.5, -0.5);
          glTexCoord2f(_w, _h);
          glVertex2f(0.5, -0.5);
          glTexCoord2f(_w, 0.0f);
          glVertex2f(0.5, 0.5);
          glTexCoord2f(0.0f, 0.0f);
          glVertex2f(-0.5, 0.5);
        }
        glEnd();
      });
    }

void omni::visual::Rectangle::draw ( QRectF const &  _rect )

static

Draw rectangle from given QRectF.

    {
      Rectangle::draw(_rect.left(), _rect.right(), _rect.top(), _rect.bottom());
    }

void omni::visual::Rectangle::drawFlipped ( float  _left = -0.5, float  _right = 0.5, float  _top = 0.5, float  _bottom = -0.5  )

static

Draw rectangle from border coordinates, flipped on y axis version.

    {
      glBegin(GL_QUADS);
      {
        glTexCoord2f(0.0f, 0.0f);
        glVertex2f(_left, _bottom);
        glTexCoord2f(1.0f, 0.0f);
        glVertex2f(_right, _bottom);
        glTexCoord2f(1.0f, 1.0f);
        glVertex2f(_right, _top);
        glTexCoord2f(0.0f, 1.0f);
        glVertex2f(_left, _top);
      }
      glEnd();
    }

void omni::visual::Rectangle::drawFlipped ( QRectF const &  _rect )

static

Draw rectangle from given QRectF, flipped on y axis version.

    {
      Rectangle::drawFlipped(_rect.left(), _rect.right(),
                             _rect.top(), _rect.bottom());
    }

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

• include/omni/visual/Rectangle.h
• src/lib/visual/Rectangle.cpp