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Make the skydome interface a little more flexible so we can scale the dome

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for other applications.
This commit is contained in:
curt
2002-04-27 03:19:45 +00:00
parent 384e56b9b4
commit 8ffdfa3cb1
2 changed files with 24 additions and 24 deletions
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46
simgear/sky/dome.cxx
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@@ -49,19 +49,19 @@
// in meters of course
#define CENTER_ELEV 25000.0
static const float center_elev = 0.3125;
#define UPPER_RADIUS 50000.0
#define UPPER_ELEV 20000.0
static const float upper_radius = 0.6250;
static const float upper_elev = 0.2500;
#define MIDDLE_RADIUS 70000.0
#define MIDDLE_ELEV 8000.0
static const float middle_radius = 0.8750;
static const float middle_elev = 0.1000;
#define LOWER_RADIUS 80000.0
#define LOWER_ELEV 0.0
static const float lower_radius = 0.8750;
static const float lower_elev = 0.0000;
#define BOTTOM_RADIUS 50000.0
#define BOTTOM_ELEV -2000.0
static const float bottom_radius = 0.6250;
static const float bottom_elev = -0.0250;
// Set up dome rendering callbacks
@@ -103,7 +103,7 @@ SGSkyDome::~SGSkyDome( void ) {
// initialize the sky object and connect it into our scene graph
ssgBranch * SGSkyDome::build( ) {
ssgBranch * SGSkyDome::build( double hscale, double vscale ) {
sgVec4 color;
float theta;
@@ -145,30 +145,30 @@ ssgBranch * SGSkyDome::build( ) {
sgVec3 lower_vertex[12];
sgVec3 bottom_vertex[12];
sgSetVec3( center_vertex, 0.0, 0.0, CENTER_ELEV );
sgSetVec3( center_vertex, 0.0, 0.0, center_elev * vscale );
for ( i = 0; i < 12; i++ ) {
theta = (i * 30.0) * SGD_DEGREES_TO_RADIANS;
sgSetVec3( upper_vertex[i],
cos(theta) * UPPER_RADIUS,
sin(theta) * UPPER_RADIUS,
UPPER_ELEV );
cos(theta) * upper_radius * hscale,
sin(theta) * upper_radius * hscale,
upper_elev * vscale );
sgSetVec3( middle_vertex[i],
cos((double)theta) * MIDDLE_RADIUS,
sin((double)theta) * MIDDLE_RADIUS,
MIDDLE_ELEV );
cos((double)theta) * middle_radius * hscale,
sin((double)theta) * middle_radius * hscale,
middle_elev * vscale );
sgSetVec3( lower_vertex[i],
cos((double)theta) * LOWER_RADIUS,
sin((double)theta) * LOWER_RADIUS,
LOWER_ELEV );
cos((double)theta) * lower_radius * hscale,
sin((double)theta) * lower_radius * hscale,
lower_elev * vscale );
sgSetVec3( bottom_vertex[i],
cos((double)theta) * BOTTOM_RADIUS,
sin((double)theta) * BOTTOM_RADIUS,
BOTTOM_ELEV );
cos((double)theta) * bottom_radius * hscale,
sin((double)theta) * bottom_radius * hscale,
bottom_elev * vscale );
}
// generate the center disk vertex/color arrays

2
simgear/sky/dome.hxx
View File

@@ -61,7 +61,7 @@ public:
// initialize the sky object and connect it into our scene graph
// root
ssgBranch *build();
ssgBranch *build( double hscale = 80000.0, double vscale = 80000.0 );
// repaint the sky colors based on current value of sun_angle,
// sky, and fog colors. This updates the color arrays for