From 80d34ce1a02739a84757137f1f1d5ce9279315c0 Mon Sep 17 00:00:00 2001
From: Mike Goslin <mikegoslin@users.sourceforge.net>
Date: Thu, 25 Jan 2001 02:49:24 +0000
Subject: [PATCH] *** empty log message ***

---
 panda/src/testbed/Sources.pp                |   9 +
 panda/src/testbed/test_sprite_particles.cxx | 283 ++++++++++++++++++++
 2 files changed, 292 insertions(+)
 create mode 100644 panda/src/testbed/test_sprite_particles.cxx

diff --git a/panda/src/testbed/Sources.pp b/panda/src/testbed/Sources.pp
index 517a66d110..efa8562f9c 100644
--- a/panda/src/testbed/Sources.pp
+++ b/panda/src/testbed/Sources.pp
@@ -119,6 +119,15 @@
 
 #end test_bin_target
 
+#begin test_bin_target
+  #define TARGET test_sprite_particles
+
+  #define SOURCES \
+    test_sprite_particles.cxx
+  #define LOCAL_LIBS $[LOCAL_LIBS] physics particlesystem
+
+#end test_bin_target
+
 #begin test_bin_target
   #define TARGET test_recparticles
 
diff --git a/panda/src/testbed/test_sprite_particles.cxx b/panda/src/testbed/test_sprite_particles.cxx
new file mode 100644
index 0000000000..1d76deb8c5
--- /dev/null
+++ b/panda/src/testbed/test_sprite_particles.cxx
@@ -0,0 +1,283 @@
+#include <framework.h>
+
+#include <eventHandler.h>
+#include <chancfg.h>
+#include <string>
+#include <renderModeTransition.h>
+#include <colorTransition.h>
+#include <cullFaceTransition.h>
+#include <depthTestTransition.h>
+#include <depthWriteTransition.h>
+#include <textureTransition.h>
+#include <lightTransition.h>
+#include <materialTransition.h>
+#include <transformTransition.h>
+#include <get_rel_pos.h>
+#include <boundingSphere.h>
+#include <geomSphere.h>
+#include <geomNode.h>
+#include <notify.h>
+#include <directionalLight.h>
+#include <renderRelation.h>
+#include <camera.h>
+#include <frustum.h>
+#include <orthoProjection.h>
+#include <perspectiveProjection.h>
+#include <textNode.h>
+#include <physicsManager.h>
+#include <particleSystem.h>
+#include <emitters.h>
+#include <particlefactories.h>
+#include <forces.h>
+#include <sparkleParticleRenderer.h>
+#include <pointParticleRenderer.h>
+#include <lineParticleRenderer.h>
+#include <geomParticleRenderer.h>
+#include <spriteParticleRenderer.h>
+#include <colorTransition.h>
+#include <particleSystemManager.h>
+#include <clockObject.h>
+#include <nodePath.h>
+#include <pointShapeTransition.h>
+#include <texture.h>
+#include <texturePool.h>
+#include <physicalNode.h>
+#include <forceNode.h>
+#include <linearEulerIntegrator.h>
+
+// physics.  particle systems.
+
+/////////////////////////////////////////////////
+
+// particle system manager params
+#define PARTICLE_SYSTEM_MANAGER_FRAME_STEPPING 1
+
+// particle system params
+#define PARTICLE_SYSTEM_POOL_SIZE 1024
+#define PARTICLE_SYSTEM_BIRTH_RATE  0.02f
+#define PARTICLE_SYSTEM_LITTER_SIZE 10
+#define PARTICLE_SYSTEM_LITTER_SPREAD 0
+
+
+/////////////////////////////////////////////////
+
+// particle factory selection
+#define POINT_PARTICLES
+
+// particle renderer selection
+#define POINT_PARTICLE_RENDERER
+//#define SPRITE_PARTICLE_RENDERER
+
+// particle emitter selection
+#define SPHERE_VOLUME_EMITTER
+
+/////////////////////////////////////////////////
+
+// particle factory params
+#define PARTICLE_FACTORY_LIFESPAN_BASE   0.5f
+
+#if defined POINT_PARTICLE_RENDERER
+  #define POINT_PARTICLE_RENDERER_POINT_SIZE    1.0f
+#elif defined SPRITE_PARTICLE_RENDERER
+  #define SPRITE_PARTICLE_RENDERER_TEXTURE_FILE       "rose.jpg"
+  #define SPRITE_PARTICLE_RENDERER_COLOR              Colorf(1.0f, 1.0f, 1.0f, 1.0f)
+//  #define SPRITE_PARTICLE_RENDERER_X_SCALE_FLAG       true
+//  #define SPRITE_PARTICLE_RENDERER_Y_SCALE_FLAG       true
+  #define SPRITE_PARTICLE_RENDERER_ANIM_ANGLE_FLAG    true
+//  #define SPRITE_PARTICLE_RENDERER_INITIAL_X_SCALE    0.1
+//  #define SPRITE_PARTICLE_RENDERER_FINAL_X_SCALE      0.0
+//  #define SPRITE_PARTICLE_RENDERER_INITIAL_Y_SCALE    0.0
+//  #define SPRITE_PARTICLE_RENDERER_FINAL_Y_SCALE      0.5
+  #define SPRITE_PARTICLE_RENDERER_NONANIMATED_THETA  45.0f
+  #define SPRITE_PARTICLE_RENDERER_BLEND_METHOD       PP_BLEND_LINEAR
+//  #define SPRITE_PARTICLE_RENDERER_BLEND_METHOD       PP_BLEND_CUBIC
+//  #define SPRITE_PARTICLE_RENDERER_ALPHA_DISABLE      false
+#endif
+
+// particle emitter params
+
+#define EMISSION_TYPE_RADIATE
+//#define EMISSION_TYPE_EXPLICIT
+
+#define EMITTER_AMPLITUDE 1.0
+
+#if defined EMISSION_TYPE_EXPLICIT
+  #define EXPLICIT_LAUNCH_VEC LVector3f(-1.0f, -1.0f, 1.0f)
+//  #define EXPLICIT_LAUNCH_VEC LVector3f(0.0f, 0.0f, 0.0f)
+#elif defined EMISSION_TYPE_RADIATE
+  #define RADIATE_ORIGIN LPoint3f(0.0f, 0.0f, 0.0f)
+#endif
+
+#if defined SPHERE_VOLUME_EMITTER
+  #define SPHERE_VOLUME_EMITTER_RADIUS 1.0f
+#endif
+
+/////////////////////////////////////////////////
+
+
+PhysicsManager physics_manager;
+ParticleSystemManager ps_manager;
+
+PT(ParticleSystem) particle_system = new ParticleSystem(1024);
+PT(PointParticleFactory) pf = new PointParticleFactory;
+PT(SphereVolumeEmitter) pe = new SphereVolumeEmitter;
+
+#if defined POINT_PARTICLE_RENDERER
+  PT(PointParticleRenderer) pr = new PointParticleRenderer;
+#elif defined SPRITE_PARTICLE_RENDERER
+  PT(SpriteParticleRenderer) pr = new SpriteParticleRenderer;
+#endif
+
+PT(Texture) texture;
+
+PT(PhysicalNode) pn = new PhysicalNode;
+PT(ForceNode) fn = new ForceNode;
+
+static void
+event_csn_update(CPT_Event) {
+  float dt = ClockObject::get_global_clock()->get_dt();
+
+  physics_manager.do_physics(dt);
+  ps_manager.do_particles(dt);
+}
+
+static void
+event_add_particles(CPT_Event) {
+  static initialized = 0;
+
+  // guard against additional "P" presses (bad things happen)
+  if(initialized) return;
+  initialized = 1;
+
+  // renderer setup
+  pr->set_alpha_mode(BaseParticleRenderer::PR_ALPHA_USER);
+  pr->set_user_alpha(1.0);
+
+  #if defined POINT_PARTICLE_RENDERER
+    pr->set_point_size(1.0);
+  #elif defined SPRITE_PARTICLE_RENDERER
+    pr->set_texture(texture);
+    #ifdef SPRITE_PARTICLE_RENDERER_COLOR
+      pr->set_color(SPRITE_PARTICLE_RENDERER_COLOR);
+    #endif
+    #ifdef SPRITE_PARTICLE_RENDERER_X_SCALE_FLAG
+      pr->set_x_scale_flag(SPRITE_PARTICLE_RENDERER_X_SCALE_FLAG);
+    #endif
+    #ifdef SPRITE_PARTICLE_RENDERER_Y_SCALE_FLAG
+      pr->set_y_scale_flag(SPRITE_PARTICLE_RENDERER_Y_SCALE_FLAG);
+    #endif
+    #ifdef SPRITE_PARTICLE_RENDERER_ANIM_ANGLE_FLAG
+      pr->set_anim_angle_flag(SPRITE_PARTICLE_RENDERER_ANIM_ANGLE_FLAG);
+    #endif
+    #ifdef SPRITE_PARTICLE_RENDERER_INITIAL_X_SCALE
+      pr->set_initial_x_scale(SPRITE_PARTICLE_RENDERER_INITIAL_X_SCALE);
+    #endif
+    #ifdef SPRITE_PARTICLE_RENDERER_FINAL_X_SCALE
+      pr->set_final_x_scale(SPRITE_PARTICLE_RENDERER_FINAL_X_SCALE);
+    #endif
+    #ifdef SPRITE_PARTICLE_RENDERER_INITIAL_Y_SCALE
+      pr->set_initial_y_scale(SPRITE_PARTICLE_RENDERER_INITIAL_Y_SCALE);
+    #endif
+    #ifdef SPRITE_PARTICLE_RENDERER_FINAL_Y_SCALE
+      pr->set_final_y_scale(SPRITE_PARTICLE_RENDERER_FINAL_Y_SCALE);
+    #endif
+    #ifdef SPRITE_PARTICLE_RENDERER_NONANIMATED_THETA
+      pr->set_nonanimated_theta(SPRITE_PARTICLE_RENDERER_NONANIMATED_THETA);
+    #endif
+    #ifdef SPRITE_PARTICLE_RENDERER_BLEND_METHOD
+      //pr->set_alpha_blend_method(SPRITE_PARTICLE_RENDERER_BLEND_METHOD);
+    #endif
+    #define SPRITE_PARTICLE_RENDERER_ALPHA_DISABLE      false
+    #ifdef SPRITE_PARTICLE_RENDERER_ALPHA_DISABLE
+      pr->set_alpha_disable(SPRITE_PARTICLE_RENDERER_ALPHA_DISABLE);
+    #endif
+  #endif
+
+  // factory setup
+  #ifdef PARTICLE_FACTORY_LIFESPAN_BASE
+    pf->set_lifespan_base(PARTICLE_FACTORY_LIFESPAN_BASE);
+  #endif
+  #ifdef PARTICLE_FACTORY_LIFESPAN_SPREAD
+    pf->set_lifespan_spread(PARTICLE_FACTORY_LIFESPAN_SPREAD);
+  #endif
+  #ifdef PARTICLE_FACTORY_MASS_BASE
+    pf->set_mass_base(PARTICLE_FACTORY_MASS_BASE);
+  #endif
+  #ifdef PARTICLE_FACTORY_MASS_SPREAD
+    pf->set_mass_spread(PARTICLE_FACTORY_MASS_SPREAD);
+  #endif
+  #ifdef PARTICLE_FACTORY_TERMINAL_VELOCITY_BASE
+    pf->set_terminal_velocity_base(PARTICLE_FACTORY_TERMINAL_VELOCITY_BASE);
+  #endif
+  #ifdef PARTICLE_FACTORY_TERMINAL_VELOCITY_SPREAD
+    pf->set_terminal_velocity_spread(PARTICLE_FACTORY_TERMINAL_VELOCITY_SPREAD);
+  #endif
+
+  // emitter setup
+  #ifdef EMITTER_AMPLITUDE
+    pe->set_amplitude(EMITTER_AMPLITUDE);
+  #endif
+  #ifdef EMITTER_AMPLITUDE_SPREAD
+    pe->set_amplitude_spread(EMITTER_AMPLITUDE_SPREAD);
+  #endif
+  #ifdef EMITTER_OFFSET_FORCE
+    pe->set_offset_force(EMITTER_OFFSET_FORCE);
+  #endif
+
+  #if defined EMISSION_TYPE_EXPLICIT
+    pe->set_emission_type(BaseParticleEmitter::ET_EXPLICIT);
+    #ifdef EXPLICIT_LAUNCH_VEC
+    pe->set_explicit_launch_vector(EXPLICIT_LAUNCH_VEC);
+    #endif
+  #elif defined EMISSION_TYPE_RADIATE
+    pe->set_emission_type(BaseParticleEmitter::ET_RADIATE);
+    #ifdef RADIATE_ORIGIN
+      pe->set_radiate_origin(RADIATE_ORIGIN);
+    #endif
+  #endif
+
+  pe->set_radius(SPHERE_VOLUME_EMITTER_RADIUS);
+
+  // system setup
+  particle_system->set_birth_rate(PARTICLE_SYSTEM_BIRTH_RATE);
+  particle_system->set_litter_size(PARTICLE_SYSTEM_LITTER_SIZE);
+  particle_system->set_litter_spread(PARTICLE_SYSTEM_LITTER_SPREAD);
+  particle_system->set_emitter(pe);
+  particle_system->set_renderer(pr);
+  particle_system->set_factory(pf);
+
+  particle_system->set_render_parent(render);
+
+  pn->add_physical(particle_system);
+  new RenderRelation(render, pn);
+
+  new RenderRelation(render, fn);
+
+  physics_manager.attach_linear_integrator(new LinearEulerIntegrator);
+  physics_manager.attach_physical(particle_system);
+
+#ifdef PARTICLE_SYSTEM_MANAGER_FRAME_STEPPING
+  ps_manager.set_frame_stepping(PARTICLE_SYSTEM_MANAGER_FRAME_STEPPING);
+#endif
+  ps_manager.attach_particlesystem(particle_system);
+
+  nout << "Added particles." << endl;
+  event_handler.add_hook("NewFrame", event_csn_update);
+}
+
+void demo_keys(EventHandler&) {
+  new RenderRelation( lights, dlight );
+  have_dlight = true;
+
+  event_handler.add_hook("p", event_add_particles);
+}
+
+int main(int argc, char *argv[]) {
+  define_keys = &demo_keys;
+
+#ifdef SPRITE_PARTICLE_RENDERER
+  texture = TexturePool::load_texture(SPRITE_PARTICLE_RENDERER_TEXTURE_FILE);
+#endif
+
+  return framework_main(argc, argv);
+}