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Copy pathParticleSystem.cpp
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156 lines (121 loc) · 3.38 KB
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#include "ParticleSystem.h"
#include <fstream>
#include <iostream>
#include <sstream>
#include <string>
#include <iostream>
#include <math.h>
#include <algorithm>
ParticleSystem::ParticleSystem(const std::string& name):
BaseSystem(name)
{
}
// getters and setters
void ParticleSystem::particlesInit(int numParticles)
{
for (int i = 0; i < numParticles; i++)
{
Particle particle = Particle();
particle.positionCur = glm::vec3{ 0.0f };
particles.push_back(particle);
}
}
void ParticleSystem::setMass(int index, float mass)
{
particles[index].mass = mass;
}
void ParticleSystem::setVelocity(int index, glm::vec3 velocity)
{
particles[index].velocity = velocity;
}
void ParticleSystem::setPosition(int index, glm::vec3 position)
{
particles[index].positionCur = position;
}
float ParticleSystem::getMass(int index)
{
return particles[index].mass;
}
glm::vec3 ParticleSystem::getVelocity(int index)
{
return particles[index].velocity;
}
glm::vec3 ParticleSystem::getPosition(int index)
{
return particles[index].positionCur;
}
// Nescessary functions
int ParticleSystem::command(int argc, myCONST_SPEC char** argv)
{
if (argc < 1)
{
animTcl::OutputMessage("system %s: wrong number of params.", m_name.c_str());
return TCL_ERROR;
}
else if (strcmp(argv[0], "dim") == 0)
{
int numParticles = atoi(argv[1]);
particlesInit(numParticles);
return TCL_OK;
}
else if (strcmp(argv[0], "particle") == 0)
{ //system <sys_name> particle <index> <mass> <x y z vx vy vz>
if (argc == 9) {
Particle particle = Particle();
int index = atoi(argv[1]);
// mass
particle.mass = std::stof(argv[2]);
// position
particle.positionCur = glm::vec3{ std::stof(argv[3]), std::stof(argv[4]), std::stof(argv[5]) };
//to prevent error make new and old positions the same at the beginning
particle.positionNew = particle.positionCur;
// velocity
particle.velocity = glm::vec3{ std::stof(argv[6]), std::stof(argv[7]), std::stof(argv[8]) };
particles[index]=particle;
}
else
{
animTcl::OutputMessage("Usage: pos <x> <y> <z> ");
return TCL_ERROR;
}
}
else if (strcmp(argv[0], "all_velocities") == 0)
{ // system <sys_name> all_velocities <vx vy vz>
if (argc == 4)
{
glm::vec3 velocity{ std::stof(argv[1]), std::stof(argv[2]), std::stof(argv[3]) };
for (int i = 0; i < particles.size(); i++)
{
particles[i].velocity = velocity;
}
}
else
{
animTcl::OutputMessage("Usage: pos <x> <y> <z> ");
return TCL_ERROR;
}
}
glutPostRedisplay();
return TCL_OK;
} // ParticleSystem::command
// System draws the particles
void ParticleSystem::display(GLenum mode)
{
glEnable(GL_LIGHTING);
glMatrixMode(GL_MODELVIEW);
glPushMatrix();
glPushAttrib(GL_ALL_ATTRIB_BITS);
for (int i = 0; i < particles.size(); i++)
{
glPushMatrix();
glTranslated(particles[i].positionCur.x, particles[i].positionCur.y, particles[i].positionCur.z);
// Draw a particle at its given location
glutSolidSphere(0.1, 5, 5);
glPopMatrix();
//animTcl::OutputMessage("old position of particles being drawn in system: ");
//animTcl::OutputMessage("%f, %f, %f", particles[i].positionCur.x, particles[i].positionCur.y, particles[i].positionCur.z);
}
glColor3f(0.3, 0.7, 0.1);
glPopMatrix();
glPopAttrib();
}