//
// Written by Curtis Olson, started June 2000.
//
-// Copyright (C) 2000 Curtis L. Olson - curt@flightgear.org
+// Copyright (C) 2000 Curtis L. Olson - http://www.flightgear.org/~curt
//
// This program is distributed in the hope that it will be useful, but
// WITHOUT ANY WARRANTY; without even the implied warranty of
#include <simgear/compiler.h>
-#include <stdio.h>
-#include STL_IOSTREAM
+// #include <stdio.h>
+#include <math.h>
+
+#if defined (__APPLE__) || defined (__FreeBSD__)
+// any C++ header file undefines isinf and isnan
+// so this should be included before <iostream>
+inline int (isinf)(double r) { return isinf(r); }
+inline int (isnan)(double r) { return isnan(r); }
+#endif
#include <plib/sg.h>
#include <plib/ssg.h>
#include <simgear/math/sg_random.h>
#include <simgear/debug/logstream.hxx>
#include <simgear/misc/sg_path.hxx>
+#include <simgear/screen/extensions.hxx>
+#include <simgear/screen/texture.hxx>
#include "cloud.hxx"
+#if defined(__MINGW32__)
+#define isnan(x) _isnan(x)
+#endif
+
-static ssgSimpleState *layer_states[SGCloudLayer::SG_MAX_CLOUD_COVERAGES];
+static ssgStateSelector *layer_states[SGCloudLayer::SG_MAX_CLOUD_COVERAGES];
static bool state_initialized = false;
+static bool bump_mapping = false;
+static int nb_texture_unit = 0;
+static ssgTexture *normal_map[SGCloudLayer::SG_MAX_CLOUD_COVERAGES][2] = { 0 };
+static ssgTexture *color_map[SGCloudLayer::SG_MAX_CLOUD_COVERAGES][2] = { 0 };
+static GLuint normalization_cube_map;
+
+static glActiveTextureProc glActiveTexturePtr = 0;
+static glClientActiveTextureProc glClientActiveTexturePtr = 0;
+static glBlendColorProc glBlendColorPtr = 0;
+
+bool SGCloudLayer::enable_bump_mapping = false;
+
+static void
+generateNormalizationCubeMap()
+{
+ unsigned char data[ 32 * 32 * 3 ];
+ const int size = 32;
+ const float half_size = 16.0f,
+ offset = 0.5f;
+ sgVec3 zero_normal;
+ sgSetVec3( zero_normal, 0.5f, 0.5f, 0.5f );
+ int i, j;
+
+ unsigned char *ptr = data;
+ for ( j = 0; j < size; j++ ) {
+ for ( i = 0; i < size; i++ ) {
+ sgVec3 tmp;
+ sgSetVec3( tmp, half_size,
+ -( j + offset - half_size ),
+ -( i + offset - half_size ) );
+ sgNormalizeVec3( tmp );
+ sgScaleVec3( tmp, 0.5f );
+ sgAddVec3( tmp, zero_normal );
+
+ *ptr++ = (unsigned char)( tmp[ 0 ] * 255 );
+ *ptr++ = (unsigned char)( tmp[ 1 ] * 255 );
+ *ptr++ = (unsigned char)( tmp[ 2 ] * 255 );
+ }
+ }
+ glTexImage2D( GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB,
+ 0, GL_RGBA8, 32, 32, 0, GL_RGB, GL_UNSIGNED_BYTE, data );
+
+ ptr = data;
+ for ( j = 0; j < size; j++ ) {
+ for ( i = 0; i < size; i++ ) {
+ sgVec3 tmp;
+ sgSetVec3( tmp, -half_size,
+ -( j + offset - half_size ),
+ ( i + offset - half_size ) );
+ sgNormalizeVec3( tmp );
+ sgScaleVec3( tmp, 0.5f );
+ sgAddVec3( tmp, zero_normal );
+
+ *ptr++ = (unsigned char)( tmp[ 0 ] * 255 );
+ *ptr++ = (unsigned char)( tmp[ 1 ] * 255 );
+ *ptr++ = (unsigned char)( tmp[ 2 ] * 255 );
+ }
+ }
+ glTexImage2D( GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB,
+ 0, GL_RGBA8, 32, 32, 0, GL_RGB, GL_UNSIGNED_BYTE, data );
+
+ ptr = data;
+ for ( j = 0; j < size; j++ ) {
+ for ( i = 0; i < size; i++ ) {
+ sgVec3 tmp;
+ sgSetVec3( tmp, ( i + offset - half_size ),
+ half_size,
+ ( j + offset - half_size ) );
+ sgNormalizeVec3( tmp );
+ sgScaleVec3( tmp, 0.5f );
+ sgAddVec3( tmp, zero_normal );
+
+ *ptr++ = (unsigned char)( tmp[ 0 ] * 255 );
+ *ptr++ = (unsigned char)( tmp[ 1 ] * 255 );
+ *ptr++ = (unsigned char)( tmp[ 2 ] * 255 );
+ }
+ }
+ glTexImage2D( GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB,
+ 0, GL_RGBA8, 32, 32, 0, GL_RGB, GL_UNSIGNED_BYTE, data );
+
+ ptr = data;
+ for ( j = 0; j < size; j++ ) {
+ for ( i = 0; i < size; i++ ) {
+ sgVec3 tmp;
+ sgSetVec3( tmp, ( i + offset - half_size ),
+ -half_size,
+ -( j + offset - half_size ) );
+ sgNormalizeVec3( tmp );
+ sgScaleVec3( tmp, 0.5f );
+ sgAddVec3( tmp, zero_normal );
+
+ *ptr++ = (unsigned char)( tmp[ 0 ] * 255 );
+ *ptr++ = (unsigned char)( tmp[ 1 ] * 255 );
+ *ptr++ = (unsigned char)( tmp[ 2 ] * 255 );
+ }
+ }
+ glTexImage2D( GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB,
+ 0, GL_RGBA8, 32, 32, 0, GL_RGB, GL_UNSIGNED_BYTE, data );
+
+ ptr = data;
+ for ( j = 0; j < size; j++ ) {
+ for ( i = 0; i < size; i++ ) {
+ sgVec3 tmp;
+ sgSetVec3( tmp, ( i + offset - half_size ),
+ -( j + offset - half_size ),
+ half_size );
+ sgNormalizeVec3( tmp );
+ sgScaleVec3( tmp, 0.5f );
+ sgAddVec3( tmp, zero_normal );
+
+ *ptr++ = (unsigned char)( tmp[ 0 ] * 255 );
+ *ptr++ = (unsigned char)( tmp[ 1 ] * 255 );
+ *ptr++ = (unsigned char)( tmp[ 2 ] * 255 );
+ }
+ }
+ glTexImage2D( GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB,
+ 0, GL_RGBA8, 32, 32, 0, GL_RGB, GL_UNSIGNED_BYTE, data );
+
+ ptr = data;
+ for ( j = 0; j < size; j++ ) {
+ for ( i = 0; i < size; i++ ) {
+ sgVec3 tmp;
+ sgSetVec3( tmp, -( i + offset - half_size ),
+ -( j + offset - half_size ),
+ -half_size );
+ sgNormalizeVec3( tmp );
+ sgScaleVec3( tmp, 0.5f );
+ sgAddVec3( tmp, zero_normal );
+
+ *ptr++ = (unsigned char)( tmp[ 0 ] * 255 );
+ *ptr++ = (unsigned char)( tmp[ 1 ] * 255 );
+ *ptr++ = (unsigned char)( tmp[ 2 ] * 255 );
+ }
+ }
+ glTexImage2D( GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB,
+ 0, GL_RGBA8, 32, 32, 0, GL_RGB, GL_UNSIGNED_BYTE, data );
+}
// Constructor
SGCloudLayer::SGCloudLayer( const string &tex_path ) :
layer_root(new ssgRoot),
layer_transform(new ssgTransform),
+ state_sel(0),
texture_path(tex_path),
layer_span(0.0),
layer_asl(0.0),
layer_transition(0.0),
layer_coverage(SG_CLOUD_CLEAR),
scale(4000.0),
+ speed(0.0),
+ direction(0.0),
last_lon(0.0),
- last_lat(0.0)
+ last_lat(0.0),
+ vertices(0),
+ indices(0)
{
cl[0] = cl[1] = cl[2] = cl[3] = NULL;
vl[0] = vl[1] = vl[2] = vl[3] = NULL;
// Destructor
SGCloudLayer::~SGCloudLayer()
{
+ delete vertices;
+ delete indices;
delete layer_root; // deletes layer_transform and layer as well
}
}
void
-SGCloudLayer::setElevation_m (float elevation_m)
+SGCloudLayer::setElevation_m (float elevation_m, bool set_span)
{
layer_asl = elevation_m;
+
+ if (set_span) {
+ if (elevation_m > 4000)
+ setSpan_m( elevation_m * 10 );
+ else
+ setSpan_m( 40000 );
+ }
}
float
if ( !state_initialized ) {
state_initialized = true;
- cout << "initializing cloud layers" << endl;
-
- SGPath cloud_path;
-
- cloud_path.set(texture_path.str());
- cloud_path.append("overcast.rgb");
- layer_states[SG_CLOUD_OVERCAST] = sgCloudMakeState(cloud_path.str());
+ SG_LOG(SG_ASTRO, SG_INFO, "initializing cloud layers");
- cloud_path.set(texture_path.str());
- cloud_path.append("broken.rgba");
- layer_states[SG_CLOUD_BROKEN]
- = sgCloudMakeState(cloud_path.str());
+ bump_mapping = SGIsOpenGLExtensionSupported("GL_ARB_multitexture") &&
+ SGIsOpenGLExtensionSupported("GL_ARB_texture_cube_map") &&
+ SGIsOpenGLExtensionSupported("GL_ARB_texture_env_combine") &&
+ SGIsOpenGLExtensionSupported("GL_ARB_texture_env_dot3") &&
+ SGIsOpenGLExtensionSupported("GL_ARB_imaging");
- cloud_path.set(texture_path.str());
- cloud_path.append("scattered.rgba");
- layer_states[SG_CLOUD_SCATTERED]
- = sgCloudMakeState(cloud_path.str());
-
- cloud_path.set(texture_path.str());
- cloud_path.append("few.rgba");
- layer_states[SG_CLOUD_FEW]
- = sgCloudMakeState(cloud_path.str());
-
- cloud_path.set(texture_path.str());
- cloud_path.append("cirrus.rgba");
- layer_states[SG_CLOUD_CIRRUS]
- = sgCloudMakeState(cloud_path.str());
+ if ( bump_mapping ) {
+ glGetIntegerv( GL_MAX_TEXTURE_UNITS_ARB, &nb_texture_unit );
+ if ( nb_texture_unit < 2 ) {
+ bump_mapping = false;
+ }
+ //nb_texture_unit = 2; // Force the number of units for now
+ }
- layer_states[SG_CLOUD_CLEAR] = 0;
+ if ( bump_mapping ) {
+
+ // This bump mapping code was inspired by the tutorial available at
+ // http://www.paulsprojects.net/tutorials/simplebump/simplebump.html
+ // and a NVidia white paper
+ // http://developer.nvidia.com/object/bumpmappingwithregistercombiners.html
+ // The normal map textures were generated by the normal map Gimp plugin :
+ // http://nifelheim.dyndns.org/~cocidius/normalmap/
+ //
+ SGPath cloud_path;
+
+ glActiveTexturePtr = (glActiveTextureProc)SGLookupFunction("glActiveTextureARB");
+ glClientActiveTexturePtr = (glClientActiveTextureProc)SGLookupFunction("glClientActiveTextureARB");
+ glBlendColorPtr = (glBlendColorProc)SGLookupFunction("glBlendColor");
+
+ cloud_path.set(texture_path.str());
+ cloud_path.append("overcast.rgb");
+ color_map[ SG_CLOUD_OVERCAST ][ 0 ] = new ssgTexture( cloud_path.str().c_str() );
+ color_map[ SG_CLOUD_OVERCAST ][ 0 ]->ref();
+ cloud_path.set(texture_path.str());
+ cloud_path.append("overcast_n.rgb");
+ normal_map[ SG_CLOUD_OVERCAST ][ 0 ] = new ssgTexture( cloud_path.str().c_str() );
+ normal_map[ SG_CLOUD_OVERCAST ][ 0 ]->ref();
+
+ cloud_path.set(texture_path.str());
+ cloud_path.append("overcast_top.rgb");
+ color_map[ SG_CLOUD_OVERCAST ][ 1 ] = new ssgTexture( cloud_path.str().c_str() );
+ color_map[ SG_CLOUD_OVERCAST ][ 1 ]->ref();
+ cloud_path.set(texture_path.str());
+ cloud_path.append("overcast_top_n.rgb");
+ normal_map[ SG_CLOUD_OVERCAST ][ 1 ] = new ssgTexture( cloud_path.str().c_str() );
+ normal_map[ SG_CLOUD_OVERCAST ][ 1 ]->ref();
+
+ cloud_path.set(texture_path.str());
+ cloud_path.append("broken.rgba");
+ color_map[ SG_CLOUD_BROKEN ][ 0 ] = new ssgTexture( cloud_path.str().c_str() );
+ color_map[ SG_CLOUD_BROKEN ][ 0 ]->ref();
+ cloud_path.set(texture_path.str());
+ cloud_path.append("broken_n.rgb");
+ normal_map[ SG_CLOUD_BROKEN ][ 0 ] = new ssgTexture( cloud_path.str().c_str() );
+ normal_map[ SG_CLOUD_BROKEN ][ 0 ]->ref();
+
+ cloud_path.set(texture_path.str());
+ cloud_path.append("scattered.rgba");
+ color_map[ SG_CLOUD_SCATTERED ][ 0 ] = new ssgTexture( cloud_path.str().c_str() );
+ color_map[ SG_CLOUD_SCATTERED ][ 0 ]->ref();
+ cloud_path.set(texture_path.str());
+ cloud_path.append("scattered_n.rgb");
+ normal_map[ SG_CLOUD_SCATTERED ][ 0 ] = new ssgTexture( cloud_path.str().c_str() );
+ normal_map[ SG_CLOUD_SCATTERED ][ 0 ]->ref();
+
+ cloud_path.set(texture_path.str());
+ cloud_path.append("few.rgba");
+ color_map[ SG_CLOUD_FEW ][ 0 ] = new ssgTexture( cloud_path.str().c_str() );
+ color_map[ SG_CLOUD_FEW ][ 0 ]->ref();
+ cloud_path.set(texture_path.str());
+ cloud_path.append("few_n.rgb");
+ normal_map[ SG_CLOUD_FEW ][ 0 ] = new ssgTexture( cloud_path.str().c_str() );
+ normal_map[ SG_CLOUD_FEW ][ 0 ]->ref();
+
+ cloud_path.set(texture_path.str());
+ cloud_path.append("cirrus.rgba");
+ color_map[ SG_CLOUD_CIRRUS ][ 0 ] = new ssgTexture( cloud_path.str().c_str() );
+ color_map[ SG_CLOUD_CIRRUS ][ 0 ]->ref();
+ cloud_path.set(texture_path.str());
+ cloud_path.append("cirrus_n.rgb");
+ normal_map[ SG_CLOUD_CIRRUS ][ 0 ] = new ssgTexture( cloud_path.str().c_str() );
+ normal_map[ SG_CLOUD_CIRRUS ][ 0 ]->ref();
+
+ glGenTextures( 1, &normalization_cube_map );
+ glBindTexture( GL_TEXTURE_CUBE_MAP_ARB, normalization_cube_map );
+ generateNormalizationCubeMap();
+ glTexParameteri( GL_TEXTURE_CUBE_MAP_ARB, GL_TEXTURE_MAG_FILTER, GL_LINEAR );
+ glTexParameteri( GL_TEXTURE_CUBE_MAP_ARB, GL_TEXTURE_MIN_FILTER, GL_LINEAR );
+ glTexParameteri( GL_TEXTURE_CUBE_MAP_ARB, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE );
+ glTexParameteri( GL_TEXTURE_CUBE_MAP_ARB, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE );
+ glTexParameteri( GL_TEXTURE_CUBE_MAP_ARB, GL_TEXTURE_WRAP_R, GL_CLAMP_TO_EDGE );
+ } /* else */ {
+ SGPath cloud_path;
+ ssgStateSelector *state_sel;
+ ssgSimpleState *state;
+
+ state_sel = new ssgStateSelector( 2 );
+ state_sel->ref();
+ cloud_path.set(texture_path.str());
+ cloud_path.append("overcast.rgb");
+ state_sel->setStep( 0, sgCloudMakeState(cloud_path.str()) );
+ cloud_path.set(texture_path.str());
+ cloud_path.append("overcast_top.rgb");
+ state_sel->setStep( 1, sgCloudMakeState(cloud_path.str()) );
+ layer_states[SG_CLOUD_OVERCAST] = state_sel;
+
+ state_sel = new ssgStateSelector( 2 );
+ state_sel->ref();
+ cloud_path.set(texture_path.str());
+ cloud_path.append("broken.rgba");
+ state = sgCloudMakeState(cloud_path.str());
+ state_sel->setStep( 0, state );
+ state_sel->setStep( 1, state );
+ layer_states[SG_CLOUD_BROKEN] = state_sel;
+
+ state_sel = new ssgStateSelector( 2 );
+ state_sel->ref();
+ cloud_path.set(texture_path.str());
+ cloud_path.append("scattered.rgba");
+ state = sgCloudMakeState(cloud_path.str());
+ state_sel->setStep( 0, state );
+ state_sel->setStep( 1, state );
+ layer_states[SG_CLOUD_SCATTERED] = state_sel;
+
+ state_sel = new ssgStateSelector( 2 );
+ state_sel->ref();
+ cloud_path.set(texture_path.str());
+ cloud_path.append("few.rgba");
+ state = sgCloudMakeState(cloud_path.str());
+ state_sel->setStep( 0, state );
+ state_sel->setStep( 1, state );
+ layer_states[SG_CLOUD_FEW] = state_sel;
+
+ state_sel = new ssgStateSelector( 2 );
+ state_sel->ref();
+ cloud_path.set(texture_path.str());
+ cloud_path.append("cirrus.rgba");
+ state = sgCloudMakeState(cloud_path.str());
+ state_sel->setStep( 0, state );
+ state_sel->setStep( 1, state );
+ layer_states[SG_CLOUD_CIRRUS] = state_sel;
+
+ layer_states[SG_CLOUD_CLEAR] = 0;
+ }
}
- scale = 4000.0;
- last_lon = last_lat = -999.0f;
-
- sgVec2 base;
- sgSetVec2( base, sg_random(), sg_random() );
+ if ( bump_mapping ) {
- // build the cloud layer
- sgVec4 color;
- sgVec3 vertex;
- sgVec2 tc;
+ if ( !vertices ) {
+ vertices = new CloudVertex[ 25 ];
+ indices = new unsigned int[ 40 ];
+ }
- const float layer_scale = layer_span / scale;
- const float mpi = SG_PI/4;
+ sgVec2 base;
+ sgSetVec2( base, sg_random(), sg_random() );
- for (int i = 0; i < 4; i++)
- {
- if ( layer[i] != NULL ) {
- layer_transform->removeKid(layer[i]); // automatic delete
+ const float layer_scale = layer_span / scale;
+ const float layer_to_core = (SG_EARTH_RAD * 1000 + layer_asl);
+ const float half_angle = 0.5 * layer_span / layer_to_core;
+
+ int i;
+ for ( i = -2; i <= 2; i++ ) {
+ for ( int j = -2; j <= 2; j++ ) {
+ CloudVertex &v1 = vertices[ (i+2)*5 + (j+2) ];
+ sgSetVec3( v1.position,
+ 0.5 * i * layer_span,
+ 0.5 * j * layer_span,
+ -layer_to_core * ( 1 - cos( i * half_angle ) * cos( j * half_angle ) ) );
+ sgSetVec2( v1.texCoord,
+ base[0] + layer_scale * i * 0.25,
+ base[1] + layer_scale * j * 0.25 );
+ sgSetVec3( v1.sTangent,
+ cos( i * half_angle ),
+ 0.f,
+ -sin( i * half_angle ) );
+ sgSetVec3( v1.tTangent,
+ 0.f,
+ cos( j * half_angle ),
+ -sin( j * half_angle ) );
+ sgVectorProductVec3( v1.normal, v1.tTangent, v1.sTangent );
+ sgSetVec4( v1.color, 1.0f, 1.0f, 1.0f, (i == 0) ? 0.0f : 0.15f );
+ }
+ }
+ /*
+ * 0 1 5 6 10 11 15 16 20 21
+ * 1 2 6 7 11 12 16 17 21 22
+ * 2 3 7 8 12 13 17 18 22 23
+ * 3 4 8 9 13 14 18 19 23 24
+ */
+ for ( i = 0; i < 4; i++ ) {
+ for ( int j = 0; j < 5; j++ ) {
+ indices[ i*10 + (j*2) ] = i + 5 * j;
+ indices[ i*10 + (j*2) + 1 ] = 1 + i + 5 * j;
+ }
}
- vl[i] = new ssgVertexArray( 10 );
- cl[i] = new ssgColourArray( 10 );
- tl[i] = new ssgTexCoordArray( 10 );
-
+ } /* else */ {
- sgSetVec3( vertex, layer_span*(i-2)/2, -layer_span,
- 500 * (sin(i*mpi) - 2) );
+ scale = 4000.0;
+ last_lon = last_lat = -999.0f;
- sgSetVec2( tc, base[0] + layer_scale * i/4, base[1] );
+ sgVec2 base;
+ sgSetVec2( base, sg_random(), sg_random() );
- sgSetVec4( color, 1.0f, 1.0f, 1.0f, (i == 0) ? 0.0f : 0.15f );
+ // build the cloud layer
+ sgVec4 color;
+ sgVec3 vertex;
+ sgVec2 tc;
- cl[i]->add( color );
- vl[i]->add( vertex );
- tl[i]->add( tc );
+ const float layer_scale = layer_span / scale;
+ const float mpi = SG_PI/4;
+
+ // caclculate the difference between a flat-earth model and
+ // a round earth model given the span and altutude ASL of
+ // the cloud layer. This is the difference in altitude between
+ // the top of the inverted bowl and the edge of the bowl.
+ // const float alt_diff = layer_asl * 0.8;
+ const float layer_to_core = (SG_EARTH_RAD * 1000 + layer_asl);
+ const float layer_angle = 0.5*layer_span / layer_to_core; // The angle is half the span
+ const float border_to_core = layer_to_core * cos(layer_angle);
+ const float alt_diff = layer_to_core - border_to_core;
- for (int j = 0; j < 4; j++)
+ for (int i = 0; i < 4; i++)
{
- sgSetVec3( vertex, layer_span*(i-1)/2, layer_span*(j-2)/2,
- 500 * (sin((i+1)*mpi) + sin(j*mpi) - 2) );
+ if ( layer[i] != NULL ) {
+ layer_transform->removeKid(layer[i]); // automatic delete
+ }
+
+ vl[i] = new ssgVertexArray( 10 );
+ cl[i] = new ssgColourArray( 10 );
+ tl[i] = new ssgTexCoordArray( 10 );
- sgSetVec2( tc, base[0] + layer_scale * (i+1)/4,
- base[1] + layer_scale * j/4 );
- sgSetVec4( color, 1.0f, 1.0f, 1.0f,
- ( (j == 0) || (i == 3)) ?
- ( (j == 0) && (i == 3)) ? 0.0f : 0.15f : 1.0f );
+ sgSetVec3( vertex, layer_span*(i-2)/2, -layer_span,
+ alt_diff * (sin(i*mpi) - 2) );
+
+ sgSetVec2( tc, base[0] + layer_scale * i/4, base[1] );
+
+ sgSetVec4( color, 1.0f, 1.0f, 1.0f, (i == 0) ? 0.0f : 0.15f );
cl[i]->add( color );
vl[i]->add( vertex );
tl[i]->add( tc );
+ for (int j = 0; j < 4; j++)
+ {
+ sgSetVec3( vertex, layer_span*(i-1)/2, layer_span*(j-2)/2,
+ alt_diff * (sin((i+1)*mpi) + sin(j*mpi) - 2) );
+
+ sgSetVec2( tc, base[0] + layer_scale * (i+1)/4,
+ base[1] + layer_scale * j/4 );
- sgSetVec3( vertex, layer_span*(i-2)/2, layer_span*(j-1)/2,
- 500 * (sin(i*mpi) + sin((j+1)*mpi) - 2) );
+ sgSetVec4( color, 1.0f, 1.0f, 1.0f,
+ ( (j == 0) || (i == 3)) ?
+ ( (j == 0) && (i == 3)) ? 0.0f : 0.15f : 1.0f );
- sgSetVec2( tc, base[0] + layer_scale * i/4,
- base[1] + layer_scale * (j+1)/4 );
+ cl[i]->add( color );
+ vl[i]->add( vertex );
+ tl[i]->add( tc );
- sgSetVec4( color, 1.0f, 1.0f, 1.0f,
- ((j == 3) || (i == 0)) ?
- ((j == 3) && (i == 0)) ? 0.0f : 0.15f : 1.0f );
- cl[i]->add( color );
- vl[i]->add( vertex );
- tl[i]->add( tc );
- }
- sgSetVec3( vertex, layer_span*(i-1)/2, layer_span,
- 500 * (sin((i+1)*mpi) - 2) );
+ sgSetVec3( vertex, layer_span*(i-2)/2, layer_span*(j-1)/2,
+ alt_diff * (sin(i*mpi) + sin((j+1)*mpi) - 2) );
- sgSetVec2( tc, base[0] + layer_scale * (i+1)/4,
- base[1] + layer_scale );
+ sgSetVec2( tc, base[0] + layer_scale * i/4,
+ base[1] + layer_scale * (j+1)/4 );
+
+ sgSetVec4( color, 1.0f, 1.0f, 1.0f,
+ ((j == 3) || (i == 0)) ?
+ ((j == 3) && (i == 0)) ? 0.0f : 0.15f : 1.0f );
+ cl[i]->add( color );
+ vl[i]->add( vertex );
+ tl[i]->add( tc );
+ }
- sgSetVec4( color, 1.0f, 1.0f, 1.0f, (i == 3) ? 0.0f : 0.15f );
+ sgSetVec3( vertex, layer_span*(i-1)/2, layer_span,
+ alt_diff * (sin((i+1)*mpi) - 2) );
- cl[i]->add( color );
- vl[i]->add( vertex );
- tl[i]->add( tc );
+ sgSetVec2( tc, base[0] + layer_scale * (i+1)/4,
+ base[1] + layer_scale );
- layer[i] = new ssgVtxTable(GL_TRIANGLE_STRIP, vl[i], NULL, tl[i], cl[i]);
- layer_transform->addKid( layer[i] );
+ sgSetVec4( color, 1.0f, 1.0f, 1.0f, (i == 3) ? 0.0f : 0.15f );
- if ( layer_states[layer_coverage] != NULL ) {
- layer[i]->setState( layer_states[layer_coverage] );
- }
- }
+ cl[i]->add( color );
+ vl[i]->add( vertex );
+ tl[i]->add( tc );
- // force a repaint of the sky colors with arbitrary defaults
- repaint( color );
+ layer[i] = new ssgVtxTable(GL_TRIANGLE_STRIP, vl[i], NULL, tl[i], cl[i]);
+ layer_transform->addKid( layer[i] );
+ if ( layer_states[layer_coverage] != NULL ) {
+ layer[i]->setState( layer_states[layer_coverage] );
+ }
+ state_sel = layer_states[layer_coverage];
+ }
+
+ // force a repaint of the sky colors with arbitrary defaults
+ repaint( color );
+ }
}
// repaint the cloud layer colors
bool SGCloudLayer::repaint( sgVec3 fog_color ) {
- float *color;
- for ( int i = 0; i < 4; i++ )
- for ( int j = 0; j < 10; ++j ) {
- color = cl[i]->get( j );
- sgCopyVec3( color, fog_color );
+ if ( bump_mapping && enable_bump_mapping ) {
+
+ for ( int i = 0; i < 25; i++ ) {
+ sgCopyVec3( vertices[ i ].color, fog_color );
}
+ } else {
+ float *color;
+
+ for ( int i = 0; i < 4; i++ ) {
+ for ( int j = 0; j < 10; ++j ) {
+ color = cl[i]->get( j );
+ sgCopyVec3( color, fog_color );
+ }
+ }
+ }
+
return true;
}
-
// reposition the cloud layer at the specified origin and orientation
// lon specifies a rotation about the Z axis
// lat specifies a rotation about the new Y axis
// spin specifies a rotation about the new Z axis (and orients the
// sunrise/set effects
bool SGCloudLayer::reposition( sgVec3 p, sgVec3 up, double lon, double lat,
- double alt )
+ double alt, double dt )
{
sgMat4 T1, LON, LAT;
sgVec3 axis;
// Translate to zero elevation
// Point3D zero_elev = current_view.get_cur_zero_elev();
- // xglTranslatef( zero_elev.x(), zero_elev.y(), zero_elev.z() );
sgMakeTransMat4( T1, asl_offset );
// printf(" Translated to %.2f %.2f %.2f\n",
// printf(" lon = %.2f lat = %.2f\n",
// lon * SGD_RADIANS_TO_DEGREES,
// lat * SGD_RADIANS_TO_DEGREES);
- // xglRotatef( lon * SGD_RADIANS_TO_DEGREES, 0.0, 0.0, 1.0 );
sgSetVec3( axis, 0.0, 0.0, 1.0 );
sgMakeRotMat4( LON, lon * SGD_RADIANS_TO_DEGREES, axis );
- // xglRotatef( 90.0 - f->get_Latitude() * SGD_RADIANS_TO_DEGREES,
- // 0.0, 1.0, 0.0 );
sgSetVec3( axis, 0.0, 1.0, 0.0 );
sgMakeRotMat4( LAT, 90.0 - lat * SGD_RADIANS_TO_DEGREES, axis );
last_lat = lat;
}
- if ( lon != last_lon || lat != last_lat ) {
+ double sp_dist = speed*dt;
+
+ if ( lon != last_lon || lat != last_lat || sp_dist != 0 ) {
Point3D start( last_lon, last_lat, 0.0 );
Point3D dest( lon, lat, 0.0 );
- double course, dist;
+ double course = 0.0, dist = 0.0;
+
calc_gc_course_dist( dest, start, &course, &dist );
// cout << "course = " << course << ", dist = " << dist << endl;
- double xoff = cos( course ) * dist / (2 * scale);
- double yoff = sin( course ) * dist / (2 * scale);
+ // if start and dest are too close together,
+ // calc_gc_course_dist() can return a course of "nan". If
+ // this happens, lets just use the last known good course.
+ // This is a hack, and it would probably be better to make
+ // calc_gc_course_dist() more robust.
+ if ( isnan(course) ) {
+ course = last_course;
+ } else {
+ last_course = course;
+ }
+
+ // calculate cloud movement due to external forces
+ double ax = 0.0, ay = 0.0, bx = 0.0, by = 0.0;
+
+ if (dist > 0.0) {
+ ax = cos(course) * dist;
+ ay = sin(course) * dist;
+ }
+
+ if (sp_dist > 0) {
+ bx = cos((180.0-direction) * SGD_DEGREES_TO_RADIANS) * sp_dist;
+ by = sin((180.0-direction) * SGD_DEGREES_TO_RADIANS) * sp_dist;
+ }
+
+
+ double xoff = (ax + bx) / (2 * scale);
+ double yoff = (ay + by) / (2 * scale);
const float layer_scale = layer_span / scale;
// cout << "xoff = " << xoff << ", yoff = " << yoff << endl;
- float *base, *tc;
-
- base = tl[0]->get( 0 );
+ float *base;
+ if ( bump_mapping && enable_bump_mapping ) {
+ base = vertices[12].texCoord;
+ } else {
+ base = tl[0]->get( 0 );
+ }
base[0] += xoff;
// the while loops can lead to *long* pauses if base[0] comes
if ( base[0] > -10.0 && base[0] < 10.0 ) {
base[0] -= (int)base[0];
} else {
- base[0] = 0.0;
SG_LOG(SG_ASTRO, SG_DEBUG,
- "Error: base = " << base[0] << "," << base[1]);
+ "Error: base = " << base[0] << "," << base[1] <<
+ " course = " << course << " dist = " << dist );
+ base[0] = 0.0;
}
base[1] += yoff;
// while ( base[1] > 1.0 ) { base[1] -= 1.0; }
// while ( base[1] < 0.0 ) { base[1] += 1.0; }
if ( base[1] > -10.0 && base[1] < 10.0 ) {
- base[1] -= (int)base[1];
+ base[1] -= (int)base[1];
} else {
- base[1] = 0.0;
- SG_LOG(SG_ASTRO, SG_ALERT,
- "Error: base = " << base[0] << "," << base[1]);
+ SG_LOG(SG_ASTRO, SG_ALERT,
+ "Error: base = " << base[0] << "," << base[1] <<
+ " course = " << course << " dist = " << dist );
+ base[1] = 0.0;
}
- // cout << "base = " << base[0] << "," << base[1] << endl;
+ if ( bump_mapping && enable_bump_mapping ) {
+
+ for ( int i = -2; i <= 2; i++ ) {
+ for ( int j = -2; j <= 2; j++ ) {
+ if ( i == 0 && j == 0 )
+ continue; // Already done on base
+ CloudVertex &v1 = vertices[ (i+2)*5 + (j+2) ];
+ sgSetVec2( v1.texCoord,
+ base[0] + layer_scale * i * 0.25,
+ base[1] + layer_scale * j * 0.25 );
+ }
+ }
- for (int i = 0; i < 4; i++)
- {
- tc = tl[i]->get( 0 );
- sgSetVec2( tc, base[0] + layer_scale * i/4, base[1] );
-
- for (int j = 0; j < 4; j++)
- {
- tc = tl[i]->get( j*2+1 );
+ } else {
+ // cout << "base = " << base[0] << "," << base[1] << endl;
+
+ float *tc;
+ for (int i = 0; i < 4; i++) {
+ tc = tl[i]->get( 0 );
+ sgSetVec2( tc, base[0] + layer_scale * i/4, base[1] );
+
+ for (int j = 0; j < 4; j++)
+ {
+ tc = tl[i]->get( j*2+1 );
+ sgSetVec2( tc, base[0] + layer_scale * (i+1)/4,
+ base[1] + layer_scale * j/4 );
+
+ tc = tl[i]->get( (j+1)*2 );
+ sgSetVec2( tc, base[0] + layer_scale * i/4,
+ base[1] + layer_scale * (j+1)/4 );
+ }
+
+ tc = tl[i]->get( 9 );
sgSetVec2( tc, base[0] + layer_scale * (i+1)/4,
- base[1] + layer_scale * j/4 );
-
- tc = tl[i]->get( (j+1)*2 );
- sgSetVec2( tc, base[0] + layer_scale * i/4,
- base[1] + layer_scale * (j+1)/4 );
+ base[1] + layer_scale );
}
-
- tc = tl[i]->get( 9 );
- sgSetVec2( tc, base[0] + layer_scale * (i+1)/4,
- base[1] + layer_scale );
}
-
+
last_lon = lon;
last_lat = lat;
}
}
-void SGCloudLayer::draw() {
+void SGCloudLayer::draw( bool top ) {
if ( layer_coverage != SG_CLOUD_CLEAR ) {
- ssgCullAndDraw( layer_root );
+
+ if ( bump_mapping && enable_bump_mapping ) {
+
+ sgMat4 modelview,
+ tmp,
+ transform;
+ ssgGetModelviewMatrix( modelview );
+ layer_transform->getTransform( transform );
+
+ sgTransposeNegateMat4( tmp, transform );
+
+ sgPostMultMat4( transform, modelview );
+ ssgLoadModelviewMatrix( transform );
+
+ sgVec3 lightVec;
+ ssgGetLight( 0 )->getPosition( lightVec );
+ sgNegateVec3( lightVec );
+ sgXformVec3( lightVec, tmp );
+
+ for ( int i = 0; i < 25; i++ ) {
+ CloudVertex &v = vertices[ i ];
+ sgSetVec3( v.tangentSpLight,
+ sgScalarProductVec3( v.sTangent, lightVec ),
+ sgScalarProductVec3( v.tTangent, lightVec ),
+ sgScalarProductVec3( v.normal, lightVec ) );
+ }
+
+ ssgTexture *decal = color_map[ layer_coverage ][ top ? 1 : 0 ];
+ if ( top && decal == 0 ) {
+ decal = color_map[ layer_coverage ][ 0 ];
+ }
+ ssgTexture *normal = normal_map[ layer_coverage ][ top ? 1 : 0 ];
+ if ( top && normal == 0 ) {
+ normal = normal_map[ layer_coverage ][ 0 ];
+ }
+
+ glDisable( GL_LIGHTING );
+ glDisable( GL_CULL_FACE );
+// glDisable( GL_ALPHA_TEST );
+ if ( layer_coverage == SG_CLOUD_FEW ) {
+ glEnable( GL_ALPHA_TEST );
+ glAlphaFunc ( GL_GREATER, 0.01 );
+ }
+ glEnable( GL_BLEND );
+ glBlendFunc( GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA );
+
+ glShadeModel( GL_SMOOTH );
+ glEnable( GL_COLOR_MATERIAL );
+ sgVec4 color;
+ float emis = 0.05;
+ if ( 1 ) {
+ ssgGetLight( 0 )->getColour( GL_DIFFUSE, color );
+ emis = ( color[0]+color[1]+color[2] ) / 3.0;
+ if ( emis < 0.05 )
+ emis = 0.05;
+ }
+ sgSetVec4( color, emis, emis, emis, 0.0 );
+ glMaterialfv( GL_FRONT_AND_BACK, GL_EMISSION, color );
+ sgSetVec4( color, 1.0f, 1.0f, 1.0f, 0.0 );
+ glMaterialfv( GL_FRONT_AND_BACK, GL_AMBIENT, color );
+ sgSetVec4( color, 1.0, 1.0, 1.0, 0.0 );
+ glMaterialfv( GL_FRONT_AND_BACK, GL_DIFFUSE, color );
+ sgSetVec4( color, 0.0, 0.0, 0.0, 0.0 );
+ glMaterialfv( GL_FRONT_AND_BACK, GL_SPECULAR, color );
+
+ glColor4f( 1.0f, 1.0f, 1.0f, 1.0f );
+
+ glActiveTexturePtr( GL_TEXTURE0_ARB );
+ glBindTexture( GL_TEXTURE_2D, normal->getHandle() );
+ glEnable( GL_TEXTURE_2D );
+
+ //Bind normalisation cube map to texture unit 1
+ glActiveTexturePtr( GL_TEXTURE1_ARB );
+ glBindTexture( GL_TEXTURE_CUBE_MAP_ARB, normalization_cube_map );
+ glEnable( GL_TEXTURE_CUBE_MAP_ARB );
+ glActiveTexturePtr( GL_TEXTURE0_ARB );
+
+ //Set vertex arrays for cloud
+ glVertexPointer( 3, GL_FLOAT, sizeof(CloudVertex), &vertices[0].position );
+ glEnableClientState( GL_VERTEX_ARRAY );
+/*
+ if ( nb_texture_unit >= 3 ) {
+ glColorPointer( 4, GL_FLOAT, sizeof(CloudVertex), &vertices[0].color );
+ glEnableClientState( GL_COLOR_ARRAY );
+ }
+*/
+ //Send texture coords for normal map to unit 0
+ glTexCoordPointer( 2, GL_FLOAT, sizeof(CloudVertex), &vertices[0].texCoord );
+ glEnableClientState( GL_TEXTURE_COORD_ARRAY );
+
+ //Send tangent space light vectors for normalisation to unit 1
+ glClientActiveTexturePtr( GL_TEXTURE1_ARB );
+ glTexCoordPointer( 3, GL_FLOAT, sizeof(CloudVertex), &vertices[0].tangentSpLight );
+ glEnableClientState( GL_TEXTURE_COORD_ARRAY );
+
+ //Set up texture environment to do (tex0 dot tex1)*color
+ glTexEnvi( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE_ARB );
+ glTexEnvi( GL_TEXTURE_ENV, GL_SOURCE0_RGB_ARB, GL_TEXTURE );
+ glTexEnvi( GL_TEXTURE_ENV, GL_COMBINE_RGB_ARB, GL_REPLACE );
+ glTexEnvi( GL_TEXTURE_ENV, GL_SOURCE0_ALPHA_ARB, GL_TEXTURE );
+ glTexEnvi( GL_TEXTURE_ENV, GL_COMBINE_ALPHA_ARB, GL_REPLACE );
+
+ glActiveTexturePtr( GL_TEXTURE1_ARB );
+
+ glTexEnvi( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE_ARB );
+ glTexEnvi( GL_TEXTURE_ENV, GL_SOURCE0_RGB_ARB, GL_TEXTURE );
+ glTexEnvi( GL_TEXTURE_ENV, GL_COMBINE_RGB_ARB, GL_DOT3_RGB_ARB );
+ glTexEnvi( GL_TEXTURE_ENV, GL_SOURCE1_RGB_ARB, GL_PREVIOUS_ARB );
+ glTexEnvi( GL_TEXTURE_ENV, GL_SOURCE0_ALPHA_ARB, GL_PREVIOUS_ARB );
+ glTexEnvi( GL_TEXTURE_ENV, GL_COMBINE_ALPHA_ARB, GL_REPLACE );
+
+ if ( nb_texture_unit >= 3 ) {
+ glActiveTexturePtr( GL_TEXTURE2_ARB );
+ glBindTexture( GL_TEXTURE_2D, decal->getHandle() );
+
+ glClientActiveTexturePtr( GL_TEXTURE2_ARB );
+ glTexCoordPointer( 2, GL_FLOAT, sizeof(CloudVertex), &vertices[0].texCoord );
+ glEnableClientState( GL_TEXTURE_COORD_ARRAY );
+
+ glTexEnvi( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE_ARB );
+ glTexEnvi( GL_TEXTURE_ENV, GL_COMBINE_RGB_ARB, GL_ADD );
+ glTexEnvi( GL_TEXTURE_ENV, GL_SOURCE0_RGB_ARB, GL_TEXTURE );
+ glTexEnvi( GL_TEXTURE_ENV, GL_SOURCE1_RGB_ARB, GL_PREVIOUS_ARB );
+
+ glClientActiveTexturePtr( GL_TEXTURE0_ARB );
+ glActiveTexturePtr( GL_TEXTURE0_ARB );
+
+ //Draw cloud layer
+ glDrawElements( GL_TRIANGLE_STRIP, 10, GL_UNSIGNED_INT, &indices[0] );
+ glDrawElements( GL_TRIANGLE_STRIP, 10, GL_UNSIGNED_INT, &indices[10] );
+ glDrawElements( GL_TRIANGLE_STRIP, 10, GL_UNSIGNED_INT, &indices[20] );
+ glDrawElements( GL_TRIANGLE_STRIP, 10, GL_UNSIGNED_INT, &indices[30] );
+
+ glDisable( GL_TEXTURE_2D );
+ glActiveTexturePtr( GL_TEXTURE1_ARB );
+ glDisable( GL_TEXTURE_CUBE_MAP_ARB );
+ glActiveTexturePtr( GL_TEXTURE2_ARB );
+ glDisable( GL_TEXTURE_2D );
+ glActiveTexturePtr( GL_TEXTURE0_ARB );
+
+ glDisableClientState( GL_TEXTURE_COORD_ARRAY );
+ glClientActiveTexturePtr( GL_TEXTURE1_ARB );
+ glDisableClientState( GL_TEXTURE_COORD_ARRAY );
+ glClientActiveTexturePtr( GL_TEXTURE2_ARB );
+ glDisableClientState( GL_TEXTURE_COORD_ARRAY );
+ glClientActiveTexturePtr( GL_TEXTURE0_ARB );
+
+ glDisableClientState( GL_COLOR_ARRAY );
+ glEnable( GL_LIGHTING );
+
+ glTexEnvi( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE );
+
+ } else {
+ glClientActiveTexturePtr( GL_TEXTURE0_ARB );
+ glActiveTexturePtr( GL_TEXTURE0_ARB );
+
+ //Draw cloud layer
+ glDrawElements( GL_TRIANGLE_STRIP, 10, GL_UNSIGNED_INT, &indices[0] );
+ glDrawElements( GL_TRIANGLE_STRIP, 10, GL_UNSIGNED_INT, &indices[10] );
+ glDrawElements( GL_TRIANGLE_STRIP, 10, GL_UNSIGNED_INT, &indices[20] );
+ glDrawElements( GL_TRIANGLE_STRIP, 10, GL_UNSIGNED_INT, &indices[30] );
+
+ //Disable textures
+ glDisable( GL_TEXTURE_2D );
+
+ glActiveTexturePtr( GL_TEXTURE1_ARB );
+ glDisable( GL_TEXTURE_CUBE_MAP_ARB );
+ glActiveTexturePtr( GL_TEXTURE0_ARB );
+
+ //disable vertex arrays
+ glDisableClientState( GL_VERTEX_ARRAY );
+
+ glDisableClientState( GL_TEXTURE_COORD_ARRAY );
+ glClientActiveTexturePtr( GL_TEXTURE1_ARB );
+ glDisableClientState( GL_TEXTURE_COORD_ARRAY );
+ glClientActiveTexturePtr( GL_TEXTURE0_ARB );
+
+ //Return to standard modulate texenv
+ glTexEnvi( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE );
+
+ if ( layer_coverage == SG_CLOUD_OVERCAST ) {
+ glDepthFunc(GL_LEQUAL);
+
+ glEnable( GL_LIGHTING );
+ sgVec4 color;
+ ssgGetLight( 0 )->getColour( GL_DIFFUSE, color );
+ float average = ( color[0] + color[1] + color[2] ) / 3.0f;
+ average = 0.15 + average/10;
+ sgVec4 averageColor;
+ sgSetVec4( averageColor, average, average, average, 1.0f );
+ ssgGetLight( 0 )->setColour( GL_DIFFUSE, averageColor );
+
+ glBlendColorPtr( average, average, average, 1.0f );
+ glBlendFunc( GL_ONE_MINUS_CONSTANT_COLOR, GL_CONSTANT_COLOR );
+
+ //Perform a second pass to color the torus
+ //Bind decal texture
+ glBindTexture( GL_TEXTURE_2D, decal->getHandle() );
+ glEnable(GL_TEXTURE_2D);
+
+ //Set vertex arrays for torus
+ glVertexPointer( 3, GL_FLOAT, sizeof(CloudVertex), &vertices[0].position );
+ glEnableClientState( GL_VERTEX_ARRAY );
+
+ //glColorPointer( 4, GL_FLOAT, sizeof(CloudVertex), &vertices[0].color );
+ //glEnableClientState( GL_COLOR_ARRAY );
+
+ glNormalPointer( GL_FLOAT, sizeof(CloudVertex), &vertices[0].normal );
+ glEnableClientState( GL_NORMAL_ARRAY );
+
+ glTexCoordPointer( 2, GL_FLOAT, sizeof(CloudVertex), &vertices[0].texCoord );
+ glEnableClientState( GL_TEXTURE_COORD_ARRAY );
+
+ //Draw cloud layer
+ glDrawElements( GL_TRIANGLE_STRIP, 10, GL_UNSIGNED_INT, &indices[0] );
+ glDrawElements( GL_TRIANGLE_STRIP, 10, GL_UNSIGNED_INT, &indices[10] );
+ glDrawElements( GL_TRIANGLE_STRIP, 10, GL_UNSIGNED_INT, &indices[20] );
+ glDrawElements( GL_TRIANGLE_STRIP, 10, GL_UNSIGNED_INT, &indices[30] );
+
+ ssgGetLight( 0 )->setColour( GL_DIFFUSE, color );
+
+ glDisableClientState( GL_TEXTURE_COORD_ARRAY );
+ }
+ }
+ //Disable texture
+ glDisable( GL_TEXTURE_2D );
+
+ glDisableClientState( GL_VERTEX_ARRAY );
+ glDisableClientState( GL_NORMAL_ARRAY );
+
+ glBlendFunc( GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA );
+ glEnable( GL_CULL_FACE );
+ glDepthFunc(GL_LESS);
+
+ ssgLoadModelviewMatrix( modelview );
+
+ } else {
+ state_sel->selectStep( top ? 1 : 0 );
+ ssgCullAndDraw( layer_root );
+ }
}
}
ssgSimpleState *sgCloudMakeState( const string &path ) {
ssgSimpleState *state = new ssgSimpleState();
- cout << " texture = " << path << endl;
+ SG_LOG(SG_ASTRO, SG_INFO, " texture = ");
state->setTexture( (char *)path.c_str() );
state->setShadeModel( GL_SMOOTH );
state->enable( GL_TEXTURE_2D );
state->enable( GL_COLOR_MATERIAL );
state->setColourMaterial( GL_AMBIENT_AND_DIFFUSE );
- state->setMaterial( GL_EMISSION, 0, 0, 0, 1 );
- state->setMaterial( GL_SPECULAR, 0, 0, 0, 1 );
+ state->setMaterial( GL_EMISSION, 0.05, 0.05, 0.05, 0.0 );
+ state->setMaterial( GL_AMBIENT, 0.2, 0.2, 0.2, 0.0 );
+ state->setMaterial( GL_DIFFUSE, 0.5, 0.5, 0.5, 0.0 );
+ state->setMaterial( GL_SPECULAR, 0.0, 0.0, 0.0, 0.0 );
state->enable( GL_BLEND );
state->enable( GL_ALPHA_TEST );
state->setAlphaClamp( 0.01 );
- // ref() the state so it doesn't get deleted if the last layer of
- // it's type is deleted.
- state->ref();
-
return state;
}
projects / simgear.git / blobdiff