OSGSkyBackground.cpp File Reference

#include <stdlib.h>
#include <stdio.h>
#include <OSGConfig.h>
#include <OSGDrawActionBase.h>
#include <OSGCamera.h>
#include <OSGViewport.h>
#include <OSGTextureChunk.h>
#include <OSGImage.h>
#include <OSGRemoteAspect.h>
#include "OSGSkyBackground.h"
#include <OSGGL.h>

Go to the source code of this file.

Namespaces
namespace	osg
Functions
static void	interpolateColor (const Color4f &startColor, const Color4f &endColor, Real32 t, Color4f &result)
static const Vec3f *	tfac (const TextureChunkPtr &t, UInt32 c)

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Function Documentation

static void interpolateColor	(	const Color4f &	startColor,
		const Color4f &	endColor,
		Real32	t,
		Color4f &	result
	)			[inline, static]

Definition at line 170 of file OSGSkyBackground.cpp.

Referenced by osg::SkyBackground::changed().

{
    Real32 t_inv = 1.f - t;
    result[0] = startColor[0] * t_inv + endColor[0] * t;
    result[1] = startColor[1] * t_inv + endColor[1] * t;
    result[2] = startColor[2] * t_inv + endColor[2] * t;
    result[3] = startColor[3] * t_inv + endColor[3] * t;
}

static const Vec3f* tfac	(	const TextureChunkPtr &	t,
		UInt32	c
	)			[inline, static]

Definition at line 388 of file OSGSkyBackground.cpp.

References osg::NullFC.

Referenced by osg::SkyBackground::drawBox().

{
    static Vec3f defaulttc[7][4] = {
        // 2D default TCs
        { Vec3f(0,0,0), Vec3f(1,0,0), Vec3f(1,1,0), Vec3f(0,1,0) },

        // Cubetex Default TCs
        { Vec3f(-1, 1,-1), Vec3f( 1, 1,-1), Vec3f( 1,-1,-1), Vec3f(-1,-1,-1) },
        { Vec3f( 1, 1, 1), Vec3f(-1, 1, 1), Vec3f(-1,-1, 1), Vec3f( 1,-1, 1) },
        { Vec3f( 1, 1,-1), Vec3f(-1, 1,-1), Vec3f(-1, 1, 1), Vec3f( 1, 1, 1) },
        { Vec3f( 1,-1, 1), Vec3f(-1,-1, 1), Vec3f(-1,-1,-1), Vec3f( 1,-1,-1) },
        { Vec3f( 1, 1,-1), Vec3f( 1, 1, 1), Vec3f( 1,-1, 1), Vec3f( 1,-1,-1) },
        { Vec3f(-1, 1, 1), Vec3f(-1, 1,-1), Vec3f(-1,-1,-1), Vec3f(-1,-1, 1) },
    };

    return defaulttc[c * ((t != NullFC) && (t->getImage() != NullFC) &&
                          (t->getImage()->getSideCount() == 6))];
}