PexDemo demonstrates PexParticles class

PexDemo.py

@@ -0,0 +1,50 @@
+#!/usr/bin/python
+from __future__ import absolute_import, division, print_function, unicode_literals
+
+import demo
+import pi3d
+
+display = pi3d.Display.create()
+cam2D = pi3d.Camera(is_3d=False)
+shader = pi3d.Shader('uv_flat')
+
+keys = pi3d.Keyboard()
+
+back = pi3d.ImageSprite('textures/straw1.jpg', shader=shader, w=display.width,
+                        h=display.height, z=2000.0, camera=cam2D)
+
+text = pi3d.FixedString('fonts/NotoSans-Regular.ttf', '''w,a,s,d move emitter location.
+switch between different particles with space
+esc to quit''',
+    font_size=32, camera=cam2D, shader=shader, f_type='SMOOTH')
+
+particles = [pi3d.PexParticles('pex/jelly_fish.pex', camera=cam2D, z=1500, emission_rate=40, scale=0.5),
+            pi3d.PexParticles('pex/fire.pex', camera=cam2D, z=1000, emission_rate=80),
+            pi3d.PexParticles('pex/drugs.pex', camera=cam2D, z=500, rot_rate=2.0, rot_var=5.5),
+            pi3d.PexParticles('pex/sun.pex', camera=cam2D, emission_rate=40)]
+ix = 0
+
+while display.loop_running():
+  back.draw()
+  text.draw()
+  for p in particles:
+    p.draw()
+    p.update()
+
+  k = keys.read()
+  if k > -1:
+    if k == ord(' '):
+      ix = (ix + 1) % len(particles)
+    p = particles[ix]
+    if k == ord('a'):
+      p.sourcePosition['x'] -= 10.0
+    elif k == ord('d'):
+      p.sourcePosition['x'] += 10.0
+    elif k == ord('w'):
+      p.sourcePosition['y'] += 10.0
+    elif k == ord('s'):
+      p.sourcePosition['y'] -= 10.0
+    elif k == 27:
+      keys.close()
+      display.stop()
+      break

RunTests.py

@@ -29,7 +29,7 @@
             ["FilterDemo", 10], ["FixedString", 5], ["ForestStereo", 6], ["ForestQuickNumbers", 6],
             ["ForestWalk", 6], ["Gui", 6], ["IceGrow", 6], ["LoadModelObj", 5],
             ["LoadModelPickle", 5], ["MarsStation", 13], ["Minimal_2d", 4],
-            ["Minimal", 4], ["NumpyBalls", 5], ["Orbit", 5], ["Pi3d2", 4],
+            ["Minimal", 4], ["NumpyBalls", 5], ["Orbit", 5], ["PexDemo", 3], ["Pi3d2", 4],
             ["Pi3d3", 4], ["PictureFrame", 7], ["Pong", 5], ["Post", 6],
             ["ProceduralTerrain", 10], ["RobotWalkabout", 8], ["Scenery", 15],
             ["Shapes", 5], ["Silo", 10], ["Slideshow_2d", 6],

pex/drugs.pex

@@ -0,0 +1,39 @@
+<?xml version="1.0"?>
+<particleEmitterConfig>
+  <texture name="drugs_particle.png"/>
+  <sourcePosition x="160.00" y="211.72"/>
+  <sourcePositionVariance x="30.00" y="30.00"/>
+  <speed value="98.00"/>
+  <speedVariance value="211.00"/>
+  <particleLifeSpan value="4.0000"/>
+  <particleLifespanVariance value="4.0000"/>
+  <angle value="360.00"/>
+  <angleVariance value="190.00"/>
+  <gravity x="0.70" y="1.43"/>
+  <radialAcceleration value="0.00"/>
+  <tangentialAcceleration value="0.00"/>
+  <radialAccelVariance value="0.00"/>
+  <tangentialAccelVariance value="0.00"/>
+  <startColor red="0.32" green="0.39" blue="0.58" alpha="0.76"/>
+  <startColorVariance red="0.42" green="0.75" blue="0.88" alpha="0.08"/>
+  <finishColor red="0.79" green="0.85" blue="0.42" alpha="0.57"/>
+  <finishColorVariance red="0.45" green="0.51" blue="0.26" alpha="0.46"/>
+  <maxParticles value="600"/>
+  <startParticleSize value="50.00"/>
+  <startParticleSizeVariance value="50.00"/>
+  <finishParticleSize value="30.00"/>
+  <FinishParticleSizeVariance value="10.00"/>
+  <duration value="-1.00"/>
+  <emitterType value="0"/>
+  <maxRadius value="100.00"/>
+  <maxRadiusVariance value="0.00"/>
+  <minRadius value="0.00"/>
+  <rotatePerSecond value="0.00"/>
+  <rotatePerSecondVariance value="0.00"/>
+  <blendFuncSource value="1"/>
+  <blendFuncDestination value="1"/>
+  <rotationStart value="0.00"/>
+  <rotationStartVariance value="0.00"/>
+  <rotationEnd value="0.00"/>
+  <rotationEndVariance value="0.00"/>
+</particleEmitterConfig>

pex/fire.pex

@@ -0,0 +1,39 @@
+<?xml version="1.0"?>
+<particleEmitterConfig>
+  <texture name="fire_particle.png"/>
+  <sourcePosition x="160.55" y="-400"/>
+  <sourcePositionVariance x="104.41" y="0.00"/>
+  <speed value="90.00"/>
+  <speedVariance value="30.00"/>
+  <particleLifeSpan value="2.0000"/>
+  <particleLifespanVariance value="1.9000"/>
+  <angle value="90"/>
+  <angleVariance value="15.00"/>
+  <gravity x="0.00" y="0.00"/>
+  <radialAcceleration value="0.00"/>
+  <tangentialAcceleration value="0.00"/>
+  <radialAccelVariance value="0.00"/>
+  <tangentialAccelVariance value="0.00"/>
+  <startColor red="1.00" green="0.31" blue="0.00" alpha="0.62"/>
+  <startColorVariance red="0.00" green="0.00" blue="0.00" alpha="0.00"/>
+  <finishColor red="1.00" green="0.31" blue="0.00" alpha="0.00"/>
+  <finishColorVariance red="0.00" green="0.00" blue="0.00" alpha="0.00"/>
+  <maxParticles value="500"/>
+  <startParticleSize value="70.00"/>
+  <startParticleSizeVariance value="49.53"/>
+  <finishParticleSize value="10.00"/>
+  <FinishParticleSizeVariance value="0.00"/>
+  <duration value="-1.00"/>
+  <emitterType value="0"/>
+  <maxRadius value="100.00"/>
+  <maxRadiusVariance value="0.00"/>
+  <minRadius value="0.00"/>
+  <rotatePerSecond value="0.00"/>
+  <rotatePerSecondVariance value="0.00"/>
+  <blendFuncSource value="770"/>
+  <blendFuncDestination value="1"/>
+  <rotationStart value="0.00"/>
+  <rotationStartVariance value="0.00"/>
+  <rotationEnd value="0.00"/>
+  <rotationEndVariance value="0.00"/>
+</particleEmitterConfig>

pex/jelly_fish.pex

@@ -0,0 +1,39 @@
+<?xml version="1.0"?>
+<particleEmitterConfig>
+  <texture name="jellyfish_particle.png"/>
+  <sourcePosition x="-200.00" y="-100.0"/>
+  <sourcePositionVariance x="60.00" y="0.00"/>
+  <speed value="138.16"/>
+  <speedVariance value="0.00"/>
+  <particleLifeSpan value="0.7000"/>
+  <particleLifespanVariance value="0.0000"/>
+  <angle value="224.38"/>
+  <angleVariance value="360.00"/>
+  <gravity x="0.00" y="-1400.00"/>
+  <radialAcceleration value="0.00"/>
+  <tangentialAcceleration value="0.00"/>
+  <radialAccelVariance value="0.00"/>
+  <tangentialAccelVariance value="-0.00"/>
+  <startColor red="0.15" green="0.06" blue="1.00" alpha="1.00"/>
+  <startColorVariance red="0.00" green="0.00" blue="0.00" alpha="0.00"/>
+  <finishColor red="0.00" green="0.14" blue="0.23" alpha="0.00"/>
+  <finishColorVariance red="0.00" green="0.00" blue="0.00" alpha="0.00"/>
+  <maxParticles value="300"/>
+  <startParticleSize value="43.79"/>
+  <startParticleSizeVariance value="0.00"/>
+  <finishParticleSize value="138.11"/>
+  <FinishParticleSizeVariance value="0.00"/>
+  <duration value="-1.00"/>
+  <emitterType value="0"/>
+  <maxRadius value="100.00"/>
+  <maxRadiusVariance value="0.00"/>
+  <minRadius value="0.00"/>
+  <rotatePerSecond value="0.00"/>
+  <rotatePerSecondVariance value="0.00"/>
+  <blendFuncSource value="770"/>
+  <blendFuncDestination value="772"/>
+  <rotationStart value="0.00"/>
+  <rotationStartVariance value="0.00"/>
+  <rotationEnd value="0.00"/>
+  <rotationEndVariance value="0.00"/>
+</particleEmitterConfig>

pex/sun.pex

@@ -0,0 +1,39 @@
+<?xml version="1.0"?>
+<particleEmitterConfig>
+  <texture name="sun_particle.png"/>
+  <sourcePosition x="-200" y="300"/>
+  <sourcePositionVariance x="7.00" y="7.00"/>
+  <speed value="50.00"/>
+  <speedVariance value="10.00"/>
+  <particleLifeSpan value="1.0000"/>
+  <particleLifespanVariance value="0.7000"/>
+  <angle value="0.00"/>
+  <angleVariance value="180.00"/>
+  <gravity x="0.00" y="0.00"/>
+  <radialAcceleration value="-380.00"/>
+  <tangentialAcceleration value="-440.00"/>
+  <radialAccelVariance value="0.00"/>
+  <tangentialAccelVariance value="0.00"/>
+  <startColor red="1.00" green="0.00" blue="0.00" alpha="1.00"/>
+  <startColorVariance red="0.00" green="0.00" blue="0.00" alpha="0.00"/>
+  <finishColor red="1.00" green="1.00" blue="0.00" alpha="1.00"/>
+  <finishColorVariance red="0.00" green="0.00" blue="0.00" alpha="0.00"/>
+  <maxParticles value="600"/>
+  <startParticleSize value="60.00"/>
+  <startParticleSizeVariance value="40.00"/>
+  <finishParticleSize value="5.00"/>
+  <FinishParticleSizeVariance value="5.00"/>
+  <duration value="-1.00"/>
+  <emitterType value="0"/>
+  <maxRadius value="100.00"/>
+  <maxRadiusVariance value="0.00"/>
+  <minRadius value="0.00"/>
+  <rotatePerSecond value="0.00"/>
+  <rotatePerSecondVariance value="0.00"/>
+  <blendFuncSource value="772"/>
+  <blendFuncDestination value="771"/>
+  <rotationStart value="0.00"/>
+  <rotationStartVariance value="0.00"/>
+  <rotationEnd value="0.00"/>
+  <rotationEndVariance value="0.00"/>
+</particleEmitterConfig>