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PARTICLES.CPP
Package: openglsystem.rar [view]
Upload User: nthssl
Upload Date: 2022-04-05
Package Size: 25357k
Code Size: 1k
Category:
OpenCV
Development Platform:
Visual C++
- #include "Particles.h"
- // 构造函数
- CParticleSystem::CParticleSystem(int maxParticles, CVector origin)
- {
- m_maxParticles = maxParticles;
- m_origin = origin;
- m_particleList = NULL;
- }
- // 生成新粒子
- int CParticleSystem::Emit(int numParticles)
- {
- // 生成numParticles个新粒子
- while (numParticles && (m_numParticles < m_maxParticles))
- {
- // 初始化当前粒子,并计数
- InitializeParticle(m_numParticles++);
- --numParticles;
- }
- return numParticles;
- }
- // 在系统中为最大数目的粒子分配内存空间
- void CParticleSystem::InitializeSystem()
- {
- // 如果有粒子存在,则释放内存空间
- if (m_particleList)
- {
- delete[] m_particleList;
- m_particleList = NULL;
- }
- // 分配最大数目的粒子空间
- m_particleList = new particle_t[m_maxParticles];
- // 重置粒子数目和累积时间
- m_numParticles = 0;
- m_accumulatedTime = 0.0f;
- }
- // 销毁粒子系统
- void CParticleSystem::KillSystem()
- {
- if (m_particleList)
- {
- delete[] m_particleList;
- m_particleList = NULL;
- }
- m_numParticles = 0;
- }