From 5b0a7f397104ff1938908410b422e529120acde5 Mon Sep 17 00:00:00 2001
From: Brian Paul <brian.paul@tungstengraphics.com>
Date: Tue, 27 Jun 2000 16:52:38 +0000
Subject: initial check-in

---
 progs/demos/particles.h | 81 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 81 insertions(+)
 create mode 100644 progs/demos/particles.h

(limited to 'progs/demos/particles.h')

diff --git a/progs/demos/particles.h b/progs/demos/particles.h
new file mode 100644
index 0000000000..a49dd691e4
--- /dev/null
+++ b/progs/demos/particles.h
@@ -0,0 +1,81 @@
+/*
+ * This program is under the GNU GPL.
+ * Use at your own risk.
+ *
+ * written by David Bucciarelli (humanware@plus.it)
+ *            Humanware s.r.l.
+ */
+
+#ifndef PARTICLES_H
+#define PARTICLES_H
+
+#include <GL/gl.h>
+
+class particle {
+ protected:
+  float age;         // in seconds
+  float acc[3];
+  float vel[3];
+  float pos[3];
+
+ public:
+  particle();
+  virtual ~particle() {};
+
+  virtual void beginDraw(void) {};
+  virtual void draw(void)=0;
+  virtual void endDraw(void) {};
+
+  virtual void elapsedTime(float);
+  virtual void checkAge(void) {};
+};
+
+class particleSystem {
+ protected:
+  particle **part;
+
+  float t;
+
+  unsigned long particleNum;
+ public:
+  particleSystem();
+  ~particleSystem();
+
+  void addParticle(particle *);
+
+  void reset(void);
+
+  void draw(void);
+
+  void addTime(float);
+};
+
+class rainParticle : public particle {
+ protected:
+  static float min[3];
+  static float max[3];
+  static float partLength;
+
+  float oldpos[3];
+
+  void init(void);
+ public:
+  rainParticle();
+
+  static void setRainingArea(float, float, float,
+			     float, float, float);
+  static void setLength(float);
+  static float getLength(void) { return partLength; };
+
+  void beginDraw(void) { glBegin(GL_LINES); };
+  void draw(void);
+  void endDraw(void) { glEnd(); };
+
+  void elapsedTime(float);
+
+  void checkAge(void);
+
+  void randomHeight(void);
+};
+
+#endif
-- 
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