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dirty cylindrical projection

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This commit is contained in:
Miloslav Číž 2017-11-07 22:13:05 +01:00
parent 3be9e2ee95
commit 4761a3d98b
1 changed files with 79 additions and 6 deletions
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85
apps/openmw/mwrender/renderingmanager.cpp
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@ -638,6 +638,80 @@ namespace MWRender
return mImages[index].get();
}
void create(osg::Image *dest, int w, int h)
{
dest->allocateImage(w,h,mImages[0]->r(),mImages[0]->getPixelFormat(),mImages[0]->getDataType());
for (int j = 0; j < h; ++j)
for (int i = 0; i < w; ++i)
dest->setColor(getColorByDirection(cylindricalCoords(i / ((float) w), j / ((float) h))),i,j);
}
osg::Vec3d cylindricalCoords(double x, double y)
{
osg::Vec3 result = osg::Vec3d(sin(x * 2 * osg::PI),cos(x * 2 * osg::PI),y * 2.0 - 1.0);
result.normalize();
return result;
}
osg::Vec4 getColorByDirection(osg::Vec3d d)
{
double x, y;
double ma; // see OpenGL 4.4 specification page 241
int side;
double ax, ay, az;
ax = d.x() > 0 ? d.x() : -d.x();
ay = d.y() > 0 ? d.y() : -d.y();
az = d.z() > 0 ? d.z() : -d.z();
if (ax > ay)
{
if (ax > az)
{
side = d.x() > 0 ? 1 : 3;
ma = ax;
}
else
{
side = d.z() > 0 ? 5 : 4;
ma = az;
}
}
else
{
if (ay > az)
{
side = d.y() > 0 ? 0 : 2;
ma = ay;
}
else
{
side = d.z() > 0 ? 5 : 4;
ma = az;
}
}
switch (side)
{
case 0: x = d.x(); y = d.z(); break;
case 1: x = -d.y(); y = d.z(); break;
case 2: x = -d.x(); y = d.z(); break;
case 3: x = d.y(); y = d.z(); break;
case 4: x = d.x(); y = d.y(); break;
case 5: x = d.x(); y = -d.y(); break;
default: break;
}
x = 0.5 * (x / ma + 1);
y = 0.5 * (y / ma + 1);
return mImages[side]->getColor(
std::min(std::max(int(x * mSize),0),mSize - 1),
std::min(std::max(int(y * mSize),0),mSize - 1)); //osg::Vec4(d.x(),d.y(),d.z(),1);
}
protected:
std::vector<osg::ref_ptr<osg::Image>> mImages;
int mSize;
@ -645,9 +719,6 @@ namespace MWRender
void RenderingManager::screenshot360(osg::Image* image, int w)
{
int resultW = 1024;
int resultH = 768;
SphericalScreenshot s(w);
osg::Vec3 directions[6] = {
@ -670,16 +741,18 @@ namespace MWRender
osg::Image *sideImage = s.getImage(i);
screenshot(sideImage,w,w,directions[i]);
if (i == 0)
// if (i == 0)
//image->allocateImage(resultW,resultH,sideImage->r(),sideImage->getPixelFormat(),sideImage->getDataType());
image->allocateImage(6 * w,w,sideImage->r(),sideImage->getPixelFormat(),sideImage->getDataType());
//image->allocateImage(6 * w,w,sideImage->r(),sideImage->getPixelFormat(),sideImage->getDataType());
osg::copyImage(sideImage,0,0,0,sideImage->s(),sideImage->t(),sideImage->r(),image,w * i,0,0);
// osg::copyImage(sideImage,0,0,0,sideImage->s(),sideImage->t(),sideImage->r(),image,w * i,0,0);
}
if (mCamera->isFirstPerson())
mPlayerAnimation->getObjectRoot()->setNodeMask(1);
s.create(image,1600,768);
mFieldOfView = fovBackup;
}