source: orxonox.OLD/branches/atmospheric_engine/src/lib/graphics/effects/rain_effect.cc @ 7561

/*
   orxonox - the future of 3D-vertical-scrollers

   Copyright (C) 2004 orx

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 2, or (at your option)
   any later version.

### File Specific:
   main-programmer: hdavid, amaechler
*/

#include "rain_effect.h"

#include "util/loading/load_param.h"
#include "util/loading/factory.h"

#include "glincl.h"

using namespace std;

CREATE_FACTORY(RainEffect, CL_RAIN_EFFECT);

RainEffect::RainEffect(const TiXmlElement* root)
{
  this->setClassID(CL_RAIN_EFFECT, "RainEffect");

//   this->rainMode = GL_LINEAR;
//   this->rainDensity = 0.001f;
//   this->rainStart = 10.0f;
//   this->rainEnd = 1000.0f;

  if (root != NULL)
    this->loadParams(root);

  this->activate();
}



RainEffect::~RainEffect()
{
  this->deactivate();
}


void RainEffect::loadParams(const TiXmlElement* root)
{
  WeatherEffect::loadParams(root);

//   LoadParam(root, "rain-mode", this, RainEffect, setRainMode);
//   LoadParam(root, "rain-density", this, RainEffect, setRainDensity);
//   LoadParam(root, "rain-color", this, RainEffect, setRainColor);


}

bool RainEffect::init()
{}



bool RainEffect::activate()
{
//   PRINTF(0)( "Enabling Rain Effect, mode: %i, density: %f, start: %f, end: %f, color %f, %f, %f\n", this->rainMode, this->rainDensity, this->rainStart, this->rainEnd, this->colorVector.x, this->colorVector.y, this->colorVector.z);
// 
//   glEnable(GL_RAIN);
//   {
//     //GLfloat rainColor[4] = {0.7, 0.6, 0.6, 1.0};
//     GLfloat rainColor[4] = { colorVector.x, colorVector.y, colorVector.z, 1.0};
// 
//     glRaini(GL_RAIN_MODE, this->rainMode);
//     glRainfv(GL_RAIN_COLOR, rainColor);
//     glRainf(GL_RAIN_DENSITY, this->rainDensity);
//     glHint(GL_RAIN_HINT, GL_DONT_CARE);
//     glRainf(GL_RAIN_START, this->rainStart);
//     glRainf(GL_RAIN_END, this->rainEnd);
// 
//     //glRaini(GL_RAIN_COORDINATE_SOURCE, GL_RAIN_COORDINATE);
//   }
//   glClearColor(0.5, 0.5, 0.5, 1.0);
}


bool RainEffect::deactivate()
{
  PRINTF(0)("Deactivating Rain Effect\n");
//      glDisable(GL_RAIN);
}

void RainEffect::draw()
{
  Particle* drawPart = particles;

  glDepthMask(GL_FALSE);
  glPushAttrib(GL_ENABLE_BIT);

  glDisable(GL_LIGHTING);
  glDisable(GL_TEXTURE_2D);

  glEnable(GL_LINE_SMOOTH);
  glEnable(GL_BLEND);
  glBlendFunc(GL_SRC_ALPHA, GL_DST_ALPHA);

  glLineWidth(2.0);
  glBegin(GL_LINES);
  while (likely(drawPart != NULL))
  {
  //    printf("%f %f %f %f\n", drawPart->color[0], drawPart->color[1], drawPart->color[2], drawPart->color[3]);
    glColor4fv(drawPart->color);
    glVertex3f(drawPart->position.x,  drawPart->position.y,  drawPart->position.z);
    glVertex3f(drawPart->position.x - drawPart->velocity.x * drawPart->radius,
               drawPart->position.y - drawPart->velocity.y * drawPart->radius,
               drawPart->position.z - drawPart->velocity.z * drawPart->radius);
    drawPart = drawPart->next;
  }
  glEnd();

  glDepthMask(GL_TRUE);
  glPopAttrib();
}