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Make use of the repeatable sg_random() function so display systems can synchronize 3d clouds too.

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This commit is contained in:
ehofman
2005-04-30 10:00:16 +00:00
parent f9cbf8361d
commit 3bd810fedc
2 changed files with 5 additions and 2 deletions
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simgear/scene/sky/cloudfield.cxx
+3 -1
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@@ -28,6 +28,7 @@
#include <plib/sg.h> #include <plib/sg.h>
#include <plib/ssg.h> #include <plib/ssg.h>
#include <simgear/math/sg_random.h>
#include <simgear/math/sg_geodesy.hxx> #include <simgear/math/sg_geodesy.hxx>
#include <simgear/math/polar3d.hxx> #include <simgear/math/polar3d.hxx>
@@ -193,6 +194,7 @@ SGCloudField::SGCloudField() :
sgSetVec3( relative_position, 0,0,0); sgSetVec3( relative_position, 0,0,0);
theField.reserve(200); theField.reserve(200);
inViewClouds.reserve(200); inViewClouds.reserve(200);
sg_srandom_time_10();
} }
SGCloudField::~SGCloudField() { SGCloudField::~SGCloudField() {
@@ -247,7 +249,7 @@ void SGCloudField::addCloud( sgVec3 pos, SGNewCloud *cloud) {
static float Rnd(float n) { static float Rnd(float n) {
return n * (-0.5f + rand() / (float) RAND_MAX); return n * (-0.5f + sg_random());
} }
// for debug only // for debug only
simgear/scene/sky/newcloud.cxx
+2 -1
View File
@@ -28,6 +28,7 @@
#include <plib/sg.h> #include <plib/sg.h>
#include <plib/ssg.h> #include <plib/ssg.h>
#include <simgear/math/sg_random.h>
#include <simgear/misc/sg_path.hxx> #include <simgear/misc/sg_path.hxx>
#include STL_ALGORITHM #include STL_ALGORITHM
@@ -240,7 +241,7 @@ void SGNewCloud::addSprite(float x, float y, float z, float r, CLbox_type type,
// return a random number between -n/2 and n/2 // return a random number between -n/2 and n/2
static float Rnd(float n) { static float Rnd(float n) {
return n * (-0.5f + rand() / (float) RAND_MAX); return n * (-0.5f + sg_random());
} }
// generate all sprite with defined boxes // generate all sprite with defined boxes