void _init() {
DrawElementsUShort* fan = new DrawElementsUShort(PrimitiveSet::TRIANGLE_FAN);
fan->reserve(m_Segments+2);
fan->push_back(m_Segments);
for (int i=0; i < m_Segments; i++) {
fan->push_back(i);
}
fan->push_back(0);
(*m_Coords)[m_Segments].set(0.0, 0.0, -1000.0);
addPrimitiveSet(fan);
setVertexArray(m_Coords);
setColorArray(m_Colors);
UShortArray *ci = new UShortArray(m_Segments+1);
for (unsigned short i=0; i < m_Segments+1; i++) {
(*ci)[i] = i;
}
setColorIndices(ci);
setColorBinding(Geometry::BIND_PER_VERTEX);
updateHorizon(1000.0, 120000.0);
updateFogColor(Vec4(1.0, 1.0, 1.0, 1.0));
}
ref_ptr<PrimitiveSet> VTXReader::processStrip(unsigned short * indexArray,
std::istream * str,
int offset)
{
VTXStrip strip;
DrawElementsUShort * drawElements;
ref_ptr<PrimitiveSet> primSet;
unsigned short * start;
unsigned short * end;
// Seek to the strip
str->seekg(offset);
// Read it. We have to do this in a kind of screwy way because of the
// weird byte packing. Valve uses pragma pack, but we can't do that
// because it's non-portable. Of course, I'm assuming a 4-byte alignment
// here, which might also be non-portable...
str->read((char *) &strip, VTX_STRIP_SIZE - 8);
str->read((char *) &strip.num_bone_state_changes, 8);
// Get the range of indices in question from the strip
start = &indexArray[strip.index_offset];
end = &indexArray[strip.index_offset + strip.num_indices];
// Create the primitive set (based on the flag)
if (strip.strip_flags & STRIP_IS_TRI_LIST)
drawElements =
new DrawElementsUShort(PrimitiveSet::TRIANGLES, start, end);
else
drawElements =
new DrawElementsUShort(PrimitiveSet::TRIANGLE_STRIP, start, end);
// Flip the indices to get the front faces correct
std::reverse(drawElements->begin(), drawElements->end());
// Return the primitive set
primSet = drawElements;
return primSet;
}
bool Primitive_readLocalData(Input& fr,osg::Geometry& geom)
{
bool iteratorAdvanced = false;
bool firstMatched = false;
if ((firstMatched = fr.matchSequence("DrawArrays %w %i %i %i")) ||
fr.matchSequence("DrawArrays %w %i %i") )
{
GLenum mode;
Geometry_matchPrimitiveModeStr(fr[1].getStr(),mode);
int first;
fr[2].getInt(first);
int count;
fr[3].getInt(count);
int numInstances = 0;
if (firstMatched)
{
fr[4].getInt(numInstances);
fr += 5;
}
else
{
fr += 4;
}
geom.addPrimitiveSet(new DrawArrays(mode, first, count, numInstances));
iteratorAdvanced = true;
}
else if ((firstMatched = fr.matchSequence("DrawArrayLengths %w %i %i %i {")) ||
fr.matchSequence("DrawArrayLengths %w %i %i {") )
{
int entry = fr[1].getNoNestedBrackets();
GLenum mode;
Geometry_matchPrimitiveModeStr(fr[1].getStr(),mode);
int first;
fr[2].getInt(first);
int capacity;
fr[3].getInt(capacity);
int numInstances = 0;
if (firstMatched)
{
fr[4].getInt(numInstances);
fr += 6;
}
else
{
fr += 5;
}
DrawArrayLengths* prim = new DrawArrayLengths;
prim->setMode(mode);
prim->setNumInstances(numInstances);
prim->setFirst(first);
prim->reserve(capacity);
while (!fr.eof() && fr[0].getNoNestedBrackets()>entry)
{
unsigned int i;
if (fr[0].getUInt(i))
{
prim->push_back(i);
++fr;
}
}
++fr;
geom.addPrimitiveSet(prim);
iteratorAdvanced = true;
}
else if ((firstMatched = fr.matchSequence("DrawElementsUByte %w %i %i {")) ||
fr.matchSequence("DrawElementsUByte %w %i {"))
{
int entry = fr[1].getNoNestedBrackets();
GLenum mode;
Geometry_matchPrimitiveModeStr(fr[1].getStr(),mode);
int capacity;
fr[2].getInt(capacity);
int numInstances = 0;
if (firstMatched)
{
fr[3].getInt(numInstances);
fr += 5;
}
else
{
fr += 4;
}
DrawElementsUByte* prim = new DrawElementsUByte;
prim->setMode(mode);
prim->setNumInstances(numInstances);
prim->reserve(capacity);
while (!fr.eof() && fr[0].getNoNestedBrackets()>entry)
{
unsigned int i;
if (fr[0].getUInt(i))
{
prim->push_back(i);
++fr;
}
}
++fr;
geom.addPrimitiveSet(prim);
iteratorAdvanced = true;
}
else if ((firstMatched = fr.matchSequence("DrawElementsUShort %w %i %i {")) ||
fr.matchSequence("DrawElementsUShort %w %i {"))
{
int entry = fr[1].getNoNestedBrackets();
GLenum mode;
Geometry_matchPrimitiveModeStr(fr[1].getStr(),mode);
int capacity;
fr[2].getInt(capacity);
int numInstances = 0;
if (firstMatched)
{
fr[3].getInt(numInstances);
fr += 5;
}
else
{
fr += 4;
}
DrawElementsUShort* prim = new DrawElementsUShort;
prim->setMode(mode);
prim->setNumInstances(numInstances);
prim->reserve(capacity);
while (!fr.eof() && fr[0].getNoNestedBrackets()>entry)
{
unsigned int i;
if (fr[0].getUInt(i))
{
prim->push_back(i);
++fr;
}
}
++fr;
geom.addPrimitiveSet(prim);
iteratorAdvanced = true;
}
else if ((firstMatched = fr.matchSequence("DrawElementsUInt %w %i %i {")) ||
fr.matchSequence("DrawElementsUInt %w %i {"))
{
int entry = fr[1].getNoNestedBrackets();
GLenum mode;
Geometry_matchPrimitiveModeStr(fr[1].getStr(),mode);
int capacity;
fr[2].getInt(capacity);
int numInstances = 0;
if (firstMatched)
{
fr[3].getInt(numInstances);
fr += 5;
}
else
{
fr += 4;
}
DrawElementsUInt* prim = new DrawElementsUInt;
prim->setMode(mode);
prim->setNumInstances(numInstances);
prim->reserve(capacity);
while (!fr.eof() && fr[0].getNoNestedBrackets()>entry)
{
unsigned int i;
if (fr[0].getUInt(i))
{
prim->push_back(i);
++fr;
}
}
++fr;
geom.addPrimitiveSet(prim);
iteratorAdvanced = true;
}
return iteratorAdvanced;
}
Node *makeSky( void )
{
int i, j;
float lev[] = { -5, -1.0, 1.0, 15.0, 30.0, 60.0, 90.0 };
float cc[][4] =
{
{ 0.0, 0.0, 0.15 },
{ 0.0, 0.0, 0.15 },
{ 0.4, 0.4, 0.7 },
{ 0.2, 0.2, 0.6 },
{ 0.1, 0.1, 0.6 },
{ 0.1, 0.1, 0.6 },
{ 0.1, 0.1, 0.6 },
};
float x, y, z;
float alpha, theta;
float radius = 20.0f;
int nlev = sizeof( lev )/sizeof(float);
Geometry *geom = new Geometry;
Vec3Array& coords = *(new Vec3Array(19*nlev));
Vec4Array& colors = *(new Vec4Array(19*nlev));
Vec2Array& tcoords = *(new Vec2Array(19*nlev));
int ci = 0;
for( i = 0; i < nlev; i++ )
{
for( j = 0; j <= 18; j++ )
{
alpha = osg::DegreesToRadians(lev[i]);
theta = osg::DegreesToRadians((float)(j*20));
x = radius * cosf( alpha ) * cosf( theta );
y = radius * cosf( alpha ) * -sinf( theta );
z = radius * sinf( alpha );
coords[ci][0] = x;
coords[ci][1] = y;
coords[ci][2] = z;
colors[ci][0] = cc[i][0];
colors[ci][1] = cc[i][1];
colors[ci][2] = cc[i][2];
colors[ci][3] = 1.0;
tcoords[ci][0] = (float)j/18.0;
tcoords[ci][1] = (float)i/(float)(nlev-1);
ci++;
}
}
for( i = 0; i < nlev-1; i++ )
{
DrawElementsUShort* drawElements = new DrawElementsUShort(PrimitiveSet::TRIANGLE_STRIP);
drawElements->reserve(38);
for( j = 0; j <= 18; j++ )
{
drawElements->push_back((i+1)*19+j);
drawElements->push_back((i+0)*19+j);
}
geom->addPrimitiveSet(drawElements);
}
geom->setVertexArray( &coords );
geom->setTexCoordArray( 0, &tcoords );
geom->setColorArray( &colors );
geom->setColorBinding( Geometry::BIND_PER_VERTEX );
Texture2D *tex = new Texture2D;
tex->setImage(osgDB::readImageFile("Images/white.rgb"));
StateSet *dstate = new StateSet;
dstate->setTextureAttributeAndModes(0, tex, StateAttribute::OFF );
dstate->setTextureAttribute(0, new TexEnv );
dstate->setMode( GL_LIGHTING, StateAttribute::OFF );
dstate->setMode( GL_CULL_FACE, StateAttribute::ON );
// clear the depth to the far plane.
osg::Depth* depth = new osg::Depth;
depth->setFunction(osg::Depth::ALWAYS);
depth->setRange(1.0,1.0);
dstate->setAttributeAndModes(depth,StateAttribute::ON );
dstate->setRenderBinDetails(-2,"RenderBin");
geom->setStateSet( dstate );
Geode *geode = new Geode;
geode->addDrawable( geom );
geode->setName( "Sky" );
return geode;
}
void SkyDomeNode::init( int numWedges, int numSlices, float *sliceAngles )
{
m_nlev = numSlices;
m_nseg = numWedges;
int i, j;
float x, y, z;
float alpha, theta;
float radius = SKY_DOME_RADIUS;
m_Horizon = new FalseHorizon;
#ifdef TEXDOME
m_Horizon->init(192);
#else
m_Horizon->init(m_nseg);
#endif
m_SkyDome = new Geometry;
m_Colors = new Vec4Array(m_nseg*m_nlev);
m_TexCoords = new Vec2Array(m_nseg*m_nlev);
Vec3Array& coords = *(new Vec3Array(m_nseg*m_nlev));
Vec4Array& colors = *m_Colors;
Vec2Array& tcoords = *m_TexCoords;
assert(m_nseg * m_nlev < 65536);
UShortArray *cindex = new UShortArray(m_nseg*m_nlev);
//FIXME - leak - m_HorizonColors is created, but not attached to the scene
#ifdef TEXDOME
m_HorizonColors = new Vec4Array(192);
#else
m_HorizonColors = new Vec4Array(m_nseg);
#endif
int ci = 0;
for (i = 0; i < m_nlev; ++i) {
for(j = 0; j < m_nseg; ++j) {
alpha = osg::DegreesToRadians(sliceAngles[i]);
theta = osg::DegreesToRadians((float)(j*360.0/m_nseg));
float cos_alpha = cosf(alpha);
float cos_theta = cosf(theta);
float sin_theta = sinf(theta);
x = radius * cos_alpha * cos_theta;
y = radius * cos_alpha * -sin_theta;
z = radius * sinf(alpha);
coords[ci][0] = x;
coords[ci][1] = y;
coords[ci][2] = z;
colors[ci][0] = 1.0;
colors[ci][1] = 1.0;
colors[ci][2] = 1.0;
colors[ci][3] = 1.0;
tcoords[ci][0] = 0.5f + std::min(0.5f, (90.0f - sliceAngles[i]) / 180.0f) * cos_theta;
tcoords[ci][1] = 0.5f + std::min(0.5f, (90.0f - sliceAngles[i]) / 180.0f) * sin_theta;
(*cindex)[ci] = static_cast<unsigned short>(ci);
++ci;
}
}
DrawElementsUShort* drawElements = new DrawElementsUShort(PrimitiveSet::TRIANGLE_STRIP);
drawElements->reserve(m_nlev*(m_nseg+1)*2);
for (i = 0; i < m_nlev-1; ++i) {
for (j = 0; j <= m_nseg; ++j) {
drawElements->push_back((i+1)*m_nseg+(j%m_nseg));
drawElements->push_back((i+0)*m_nseg+(j%m_nseg));
}
}
// XXX enabling/disabling dl/vbo may impact performance
m_SkyDome->setSupportsDisplayList(false);
m_SkyDome->setUseDisplayList(false);
//m_SkyDome->setUseVertexBufferObjects(false);
m_SkyDome->addPrimitiveSet(drawElements);
m_SkyDome->setVertexArray(&coords);
m_SkyDome->setTexCoordArray( 0, m_TexCoords );
m_SkyDome->setColorArray( m_Colors );
m_SkyDome->setColorIndices(cindex);
m_SkyDome->setColorBinding(Geometry::BIND_PER_VERTEX);
if (1) {
StateSet *dome_state = m_SkyDome->getOrCreateStateSet();
#ifdef TEXDOME
Image *image = new Image();
image->allocateImage(64, 64, 1, GL_RGB, GL_UNSIGNED_BYTE);
assert(image->data() != NULL);
memset(image->data(), 255, 64*64*3);
// setting the internal texture format is required, but
// its not clear how to determine the correct value. the
// following is just what the png loader does, setting
// the format to the number of color bytes.
image->setInternalTextureFormat(GL_RGB);
Texture2D *tex = new Texture2D;
tex->setDataVariance(osg::Object::DYNAMIC);
tex->setImage(image);
tex->setWrap(Texture::WRAP_S, Texture::CLAMP);
tex->setWrap(Texture::WRAP_T, Texture::CLAMP);
tex->setFilter(Texture::MIN_FILTER, Texture::LINEAR);
tex->setFilter(Texture::MAG_FILTER, Texture::LINEAR);
//tex->setFilter(Texture::MIN_FILTER, Texture::NEAREST);
//tex->setFilter(Texture::MAG_FILTER, Texture::NEAREST);
tex->setUseHardwareMipMapGeneration(false);
tex->setUnRefImageDataAfterApply(false);
tex->setInternalFormatMode(osg::Texture::USE_IMAGE_DATA_FORMAT);
m_SkyDomeTextureImage = image;
m_SkyDomeTexture = tex;
dome_state->setTextureAttributeAndModes(0, m_SkyDomeTexture.get(), StateAttribute::ON);
dome_state->setTextureAttributeAndModes(0, new TexEnv);
#endif
}
osg::Geode *skyDomeGeode = new osg::Geode();
skyDomeGeode->addDrawable(m_SkyDome.get());
addChild(skyDomeGeode);
osg::Geode *horizon = new osg::Geode();
// horizon->addDrawable(m_Horizon.get());
// draw horizon after sky, stars, and moon
addChild(horizon);
setName("Sky");
}
Node *makeTerrain( void )
{
int m, n;
int i, j;
float dbcenter[3];
float dbradius;
getDatabaseCenterRadius( dbcenter, &dbradius );
m = (sizeof( vertex ) /(sizeof( float[3])))/39;
n = 39;
Vec3Array& v = *(new Vec3Array(m*n));
Vec2Array& t = *(new Vec2Array(m*n));
Vec4Array& col = *(new Vec4Array(1));
col[0][0] = col[0][1] = col[0][2] = col[0][3] = 1.0f;
for( i = 0; i < m * n; i++ )
{
float* vc = vertex[i];
v[i][0] = vc[0] - dbcenter[0];
v[i][1] = vc[1] - dbcenter[1];
v[i][2] = vc[2];
float* tc = texcoord[i];
t[i][0] = tc[0];
t[i][1] = tc[1];
}
Geometry *geom = new Geometry;
geom->setVertexArray( &v );
geom->setTexCoordArray( 0, &t );
geom->setColorArray( &col, Array::BIND_OVERALL );
for( i = 0; i < m-2; i++ )
{
DrawElementsUShort* elements = new DrawElementsUShort(PrimitiveSet::TRIANGLE_STRIP);
elements->reserve(39*2);
for( j = 0; j < n; j++ )
{
elements->push_back((i+0)*n+j);
elements->push_back((i+1)*n+j);
}
geom->addPrimitiveSet(elements);
}
Texture2D *tex = new Texture2D;
tex->setImage(osgDB::readRefImageFile("Images/lz.rgb"));
StateSet *dstate = new StateSet;
dstate->setMode( GL_LIGHTING, StateAttribute::OFF );
dstate->setTextureAttributeAndModes(0, tex, StateAttribute::ON );
dstate->setTextureAttribute(0, new TexEnv );
geom->setStateSet( dstate );
Geode *geode = new Geode;
geode->addDrawable( geom );
return geode;
}
