58 lines
1.3 KiB
C++
58 lines
1.3 KiB
C++
/*
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Steffen Frey
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Fachpraktikum Graphik-Programmierung 2007
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Institut fuer Visualisierung und Interaktive Systeme
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Universitaet Stuttgart
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*/
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#ifndef _UTILITY_H_
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#define _UTILITY_H_
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#include <string>
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#include <sstream>
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#include <osg/Program>
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#include <osg/Texture2D>
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namespace Utility
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{
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/*!
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Reads a file and returns a string
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*/
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bool readFile(const char* fName, std::string& s);
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/*!
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Converts a number to a string
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*/
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std::string toString(double d);
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/*!
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Create a osg shader program consisting of a vertex shader and a
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fragment shader
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*/
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osg::Program* createProgram(std::string vs, std::string fs);
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/*!
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This is a random generator to generate noise patterns.
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The returned values range from -1 to 1
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*/
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double getNoise(unsigned x, unsigned y, unsigned random);
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/*!
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Returns a smoothed noise version of the value that is read from the noise
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texture
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*/
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double smoothNoise(unsigned width, unsigned height, unsigned x, unsigned y, unsigned char* noise);
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/*!
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Creates a two dimensional color texture and apply some standard settings
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*/
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osg::Texture2D* newColorTexture2D(unsigned width, unsigned height, unsigned accuracy);
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/*!
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Get a quad with screen size in order to show a texture full screen
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*/
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osg::Geode* getCanvasQuad(unsigned width, unsigned height, double depth=-1);
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}
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#endif
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