Implemented detail field for galaxies to cut down on the amount of particles rendered for small galaxies.

src/galaxy.cpp

@@ -57,6 +57,7 @@ static GalaxyTypeName GalaxyTypeNames[] =
 Galaxy::Galaxy() :
     name(""),
     position(0, 0, 0), orientation(1), radius(1),
+    detail(1.0f),
     form(NULL)
 {
 }
@@ -102,6 +103,16 @@ void Galaxy::setRadius(float r)
     radius = r;
 }
 
+float Galaxy::getDetail() const
+{
+    return detail;
+}
+
+void Galaxy::setDetail(float d)
+{
+    detail = d;
+}
+
 
 Galaxy::GalaxyType Galaxy::getType() const
 {
@@ -289,6 +300,10 @@ GalaxyList* ReadGalaxyList(istream& in)
         galaxyParams->getNumber("Radius", radius);
         galaxy->setRadius((float) radius);
 
+        double detail = 1.0;
+        galaxyParams->getNumber("Detail", detail);
+        galaxy->setDetail((float) detail);
+
         string typeName;
         galaxyParams->getString("Type", typeName);
         Galaxy::GalaxyType type = Galaxy::Irr;

src/galaxy.h

@@ -58,6 +58,8 @@ class Galaxy
     void setRadius(float);
     GalaxyType getType() const;
     void setType(GalaxyType);
+    float getDetail() const;
+    void setDetail(float);
 
     GalacticForm* getForm() const;
     
@@ -66,6 +68,7 @@ class Galaxy
     Point3d position;
     Quatf orientation;
     float radius;
+    float detail;
     GalaxyType type;
     GalacticForm* form;
 };

src/render.cpp

@@ -1901,9 +1901,10 @@ void Renderer::renderGalaxies(const GalaxyList& galaxies,
             int pow2 = 1;
 
             vector<Point3f>* points = form->points;
+            int nPoints = (int) (points->size() * clamp(galaxy->getDetail()));
 
             glBegin(GL_QUADS);
-            for (int i = 0; i < points->size(); i++)
+            for (int i = 0; i < nPoints; i++)
             {
                 Point3f p = (*points)[i] * m;
                 Vec3f relPos = p - offset;