#region LGPL License
/*
Axiom Game Engine Library
Copyright (C) 2003 Axiom Project Team
The overall design, and a majority of the core engine and rendering code
contained within this library is a derivative of the open source Object Oriented
Graphics Engine OGRE, which can be found at http://ogre.sourceforge.net.
Many thanks to the OGRE team for maintaining such a high quality project.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#endregion
using System;
using Axiom.Core;
using Axiom.ParticleSystems;
using Axiom.MathLib;
using Axiom.Scripting;
using System.Diagnostics;
namespace Axiom.ParticleFX{
/// <summary>
/// Summary description for HollowEllipsidEmitter.
/// </summary>
public class HollowEllipsoidEmitter : AreaEmitter {
#region Fields
protected float innerX;
protected float innerY;
protected float innerZ;
#endregion Fields
#region Properties
public float InnerX {
get {
return innerX;
}
set {
Debug.Assert( value > 0.0f && value < 1.0f );
innerX = value;
}
}
public float InnerY {
get {
return innerY;
}
set {
Debug.Assert( value > 0.0f && value < 1.0f );
innerY = value;
}
}
public float InnerZ {
get {
return innerZ;
}
set {
Debug.Assert( value > 0.0f && value < 1.0f );
innerZ = value;
}
}
#endregion Properties
public HollowEllipsoidEmitter() : base() {
InitDefaults("HollowEllipsoid");
innerX = 0.5f;
innerY = 0.5f;
innerZ = 0.5f;
}
public override void InitParticle(Particle particle) {
float alpha, beta, a, b, c, x, y, z;
particle.ResetDimensions();
// create two random angles alpha and beta
// with these two angles, we are able to select any point on an
// ellipsoid's surface
MathUtil.RangeRandom(durationMin, durationMax);
alpha = MathUtil.RangeRandom(0,MathUtil.TWO_PI);
beta = MathUtil.RangeRandom(0,MathUtil.PI);
// create three random radius values that are bigger than the inner
// size, but smaller/equal than/to the outer size 1.0 (inner size is
// between 0 and 1)
a = MathUtil.RangeRandom(InnerX,1.0f);
b = MathUtil.RangeRandom(InnerY,1.0f);
c = MathUtil.RangeRandom(InnerZ,1.0f);
// with a,b,c we have defined a random ellipsoid between the inner
// ellipsoid and the outer sphere (radius 1.0)
// with alpha and beta we select on point on this random ellipsoid
// and calculate the 3D coordinates of this point
x = a * MathUtil.Cos(alpha) * MathUtil.Sin(beta);
y = b * MathUtil.Sin(alpha) * MathUtil.Sin(beta);
z = c * MathUtil.Cos(beta);
// scale the found point to the ellipsoid's size and move it
// relatively to the center of the emitter point
particle.Position = position + x * xRange + y * yRange * z * zRange;
// Generate complex data by reference
GenerateEmissionColor(particle.Color);
GenerateEmissionDirection(ref particle.Direction);
GenerateEmissionVelocity(ref particle.Direction);
// Generate simpler data
particle.timeToLive = GenerateEmissionTTL();
}
#region Command definition classes
/// <summary>
///
/// </summary>
[Command("width", "Width of the hollow ellipsoidal emitter.", typeof(ParticleEmitter))]
class WidthCommand: ICommand {
public void Set(object target, string val) {
HollowEllipsoidEmitter emitter = target as HollowEllipsoidEmitter;
emitter.Width = StringConverter.ParseFloat(val);
}
public string Get(object target) {
HollowEllipsoidEmitter emitter = target as HollowEllipsoidEmitter;
return StringConverter.ToString(emitter.Width);
}
}
/// <summary>
///
/// </summary>
[Command("height", "Height of the hollow ellipsoidal emitter.", typeof(ParticleEmitter))]
class HeightCommand: ICommand {
public void Set(object target, string val) {
HollowEllipsoidEmitter emitter = target as HollowEllipsoidEmitter;
emitter.Height = StringConverter.ParseFloat(val);
}
public string Get(object target) {
HollowEllipsoidEmitter emitter = target as HollowEllipsoidEmitter;
return StringConverter.ToString(emitter.Height);
}
}
/// <summary>
///
/// </summary>
[Command("depth", "Depth of the hollow ellipsoidal emitter.", typeof(ParticleEmitter))]
class DepthCommand: ICommand {
public void Set(object target, string val) {
HollowEllipsoidEmitter emitter = target as HollowEllipsoidEmitter;
emitter.Depth = StringConverter.ParseFloat(val);
}
public string Get(object target) {
HollowEllipsoidEmitter emitter = target as HollowEllipsoidEmitter;
return StringConverter.ToString(emitter.Depth);
}
}
/// <summary>
///
/// </summary>
[Command("inner_width", "Parametric value describing the proportion of the shape which is hollow.", typeof(ParticleEmitter))]
class InnerWidthCommand: ICommand {
public void Set(object target, string val) {
HollowEllipsoidEmitter emitter = target as HollowEllipsoidEmitter;
emitter.InnerX = StringConverter.ParseFloat(val);
}
public string Get(object target) {
HollowEllipsoidEmitter emitter = target as HollowEllipsoidEmitter;
return StringConverter.ToString(emitter.InnerX);
}
}
/// <summary>
///
/// </summary>
[Command("inner_height", "Parametric value describing the proportion of the shape which is hollow.", typeof(ParticleEmitter))]
class InnerHeightCommand: ICommand {
public void Set(object target, string val) {
HollowEllipsoidEmitter emitter = target as HollowEllipsoidEmitter;
emitter.InnerY = StringConverter.ParseFloat(val);
}
public string Get(object target) {
HollowEllipsoidEmitter emitter = target as HollowEllipsoidEmitter;
return StringConverter.ToString(emitter.InnerY);
}
}
/// <summary>
///
/// </summary>
[Command("inner_depth", "Parametric value describing the proportion of the shape which is hollow.", typeof(ParticleEmitter))]
class InnerDepthCommand: ICommand {
public void Set(object target, string val) {
HollowEllipsoidEmitter emitter = target as HollowEllipsoidEmitter;
emitter.InnerZ = StringConverter.ParseFloat(val);
}
public string Get(object target) {
HollowEllipsoidEmitter emitter = target as HollowEllipsoidEmitter;
return StringConverter.ToString(emitter.InnerZ);
}
}
#endregion Command definition classes
}
}
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