gl_utils.h File Reference

#include <mrpt/utils/utils_defs.h>
#include <mrpt/opengl/opengl_fonts.h>
#include <mrpt/opengl/CRenderizable.h>
#include <mrpt/opengl/link_pragmas.h>

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Classes
struct	mrpt::opengl::gl_utils::TRenderInfo
	Information about the rendering process being issued. More...
Namespaces
namespace	mrpt
	This is the global namespace for all Mobile Robot Programming Toolkit (MRPT) libraries.
namespace	mrpt::opengl
	The namespace for 3D scene representation and rendering.
namespace	mrpt::opengl::gl_utils
	A set of auxiliary functions that can be called to render OpenGL primitives from MRPT or user code.
Functions
Miscellaneous rendering methods
void OPENGL_IMPEXP	mrpt::opengl::gl_utils::renderSetOfObjects (const mrpt::opengl::CListOpenGLObjects &objs)
	For each object in the list:
void OPENGL_IMPEXP	mrpt::opengl::gl_utils::checkOpenGLError ()
	Checks glGetError and throws an exception if an error situation is found.
void OPENGL_IMPEXP	mrpt::opengl::gl_utils::renderTriangleWithNormal (const mrpt::math::TPoint3D &p1, const mrpt::math::TPoint3D &p2, const mrpt::math::TPoint3D &p3)
	Can be used by derived classes to draw a triangle with a normal vector computed automatically - to be called within a glBegin()-glEnd() block.
void OPENGL_IMPEXP	mrpt::opengl::gl_utils::getCurrentRenderingInfo (TRenderInfo &ri)
	Gather useful information on the render parameters.
void OPENGL_IMPEXP	mrpt::opengl::gl_utils::renderMessageBox (const float msg_x, const float msg_y, const float msg_w, const float msg_h, const std::string &text, float text_scale, const mrpt::utils::TColor back_col=mrpt::utils::TColor(0, 0, 50, 150), const mrpt::utils::TColor border_col=mrpt::utils::TColor(0, 0, 0, 140), const mrpt::utils::TColor text_col=mrpt::utils::TColor(255, 255, 255, 220), const float border_width=4.0f, const std::string &text_font=std::string("sans"), mrpt::opengl::TOpenGLFontStyle text_style=mrpt::opengl::FILL, const double text_spacing=1.5, const double text_kerning=0.1)
	Draws a message box with a centered (possibly multi-lined) text.
OpenGL bitmapped 2D fonts
void OPENGL_IMPEXP	mrpt::opengl::gl_utils::renderTextBitmap (const char *str, void *fontStyle)
	This method is safe for calling from within ::render() methods.
int OPENGL_IMPEXP	mrpt::opengl::gl_utils::textBitmapWidth (const std::string &str, mrpt::opengl::TOpenGLFont font=mrpt::opengl::MRPT_GLUT_BITMAP_TIMES_ROMAN_24)
	Return the exact width in pixels for a given string, as will be rendered by renderTextBitmap().
OpenGL vector 3D fonts
void OPENGL_IMPEXP	mrpt::opengl::gl_utils::glSetFont (const std::string &fontname)
	sets the font to use for future font rendering commands.
const OPENGL_IMPEXP std::string &	mrpt::opengl::gl_utils::glGetFont ()
	returns the name of the currently active font
mrpt::utils::TPixelCoordf OPENGL_IMPEXP	mrpt::opengl::gl_utils::glDrawText (const std::string &text, const double textScale, enum TOpenGLFontStyle style=NICE, double spacing=1.5, double kerning=0.1)
	renders a string in GL using the current settings.
mrpt::utils::TPixelCoordf OPENGL_IMPEXP	mrpt::opengl::gl_utils::glGetExtends (const std::string &text, const double textScale, double spacing=1.5, double kerning=0.1)
	returns the size of the bounding box of a text to be rendered, similar to glDrawText but without any visual output