129 lines
3.0 KiB
C++
129 lines
3.0 KiB
C++
// #include <math.h>
|
|
|
|
#include <osg/Geode>
|
|
#include <osg/Geometry>
|
|
#include <osg/Texture2D>
|
|
#include <osg/TexEnv>
|
|
#include <osg/StateSet>
|
|
|
|
#include <osgDB/ReadFile>
|
|
|
|
#include "terrain_coords.h"
|
|
#include "terrain_texcoords.h"
|
|
|
|
using namespace osg;
|
|
|
|
void getDatabaseCenterRadius( float dbcenter[3], float *dbradius )
|
|
{
|
|
int i;
|
|
double n=0.0;
|
|
double center[3] = { 0.0f, 0.0f, 0.0f };
|
|
float cnt;
|
|
|
|
cnt = 39 * 38;
|
|
for( i = 0; i < cnt; i++ )
|
|
{
|
|
center[0] += (double)vertex[i][0];
|
|
center[1] += (double)vertex[i][1];
|
|
center[2] += (double)vertex[i][2];
|
|
|
|
n = n + 1.0;
|
|
}
|
|
|
|
center[0] /= n;
|
|
center[1] /= n;
|
|
center[2] /= n;
|
|
|
|
float r = 0.0;
|
|
|
|
// for( i = 0; i < sizeof( vertex ) / (sizeof( float[3] )); i++ )
|
|
for( i = 0; i < cnt; i++ )
|
|
{
|
|
double d = sqrt(
|
|
(((double)vertex[i][0] - center[0]) * ((double)vertex[i][0] - center[0])) +
|
|
(((double)vertex[i][1] - center[1]) * ((double)vertex[i][1] - center[1])) +
|
|
(((double)vertex[i][2] - center[2]) * ((double)vertex[i][2] - center[2])) );
|
|
|
|
if( d > (double)r ) r = (float)d;
|
|
|
|
}
|
|
|
|
*dbradius = r;
|
|
dbcenter[0] = (float)center[0];
|
|
dbcenter[1] = (float)center[1];
|
|
dbcenter[2] = (float)center[2];
|
|
|
|
int index = 19 * 39 + 19;
|
|
dbcenter[0] = vertex[index][0] - 0.15;
|
|
dbcenter[1] = vertex[index][1];
|
|
dbcenter[2] = vertex[index][2] + 0.35;
|
|
|
|
}
|
|
|
|
|
|
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++ )
|
|
{
|
|
v[i][0] = vertex[i][0] - dbcenter[0];
|
|
v[i][1] = vertex[i][1] - dbcenter[1];
|
|
v[i][2] = vertex[i][2];
|
|
|
|
t[i][0] = texcoord[i][0] + 0.025;
|
|
t[i][1] = texcoord[i][1];
|
|
}
|
|
|
|
Geometry *geom = new Geometry;
|
|
|
|
geom->setVertexArray( &v );
|
|
geom->setTexCoordArray( 0, &t );
|
|
|
|
geom->setColorArray( &col );
|
|
geom->setColorBinding( Geometry::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::readImageFile("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;
|
|
}
|