46 lines
1.3 KiB
C
46 lines
1.3 KiB
C
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/*
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Header file for use by GLUI controls.
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Everything you need is right here.
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*/
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#ifndef __GLUI_INTERNAL_CONTROL_H
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#define __GLUI_INTERNAL_CONTROL_H
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/* This is the main GLUI external header */
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#include "GL/glui.h"
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/* Here's some utility routines */
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#include "glui_internal.h"
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/**
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A GLUI_Control-drawing sentinal object.
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On creation, saves the current draw buffer and window.
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On destruction, restores draw buffer and window.
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This is way nicer than calling save/restore manually.
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*/
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class GLUI_DrawingSentinal {
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int orig_buf, orig_win;
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GLUI_Control *c;
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public:
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/** The constructor sets up the drawing system */
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GLUI_DrawingSentinal(GLUI_Control *c_);
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/** The destructor cleans up drawing back how it was */
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~GLUI_DrawingSentinal();
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// Do-nothing routine to avoid compiler warning about unused variable
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inline void avoid_warning(void) {}
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};
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/** Just drop a GLUI_DRAWINGSENTINAL_IDIOM at the start of your draw methods,
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and they'll return if we can't be drawn, and
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automatically save and restore all needed state.
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*/
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#define GLUI_DRAWINGSENTINAL_IDIOM if (NOT can_draw()) return; GLUI_DrawingSentinal drawSentinal(this); drawSentinal.avoid_warning();
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/** Return the time, in seconds. */
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inline double GLUI_Time(void) {return 0.001*glutGet(GLUT_ELAPSED_TIME);}
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#endif
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