c++3d爱心粒子代码

c 3D爱心粒子的代码如下：

#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#include <time.h>
#include <GL/glut.h>

#define NUM_PARTICLES 1000
#define MAX_LIFETIME 100

typedef struct {
    float x, y, z;
    float vx, vy, vz;
    float lifetime;
} Particle;

Particle particles[NUM_PARTICLES];

void initParticles() {
    for (int i = 0; i < NUM_PARTICLES; i++) {
        particles[i].x = 0.0;
        particles[i].y = 0.0;
        particles[i].z = 0.0;
        particles[i].vx = -1.0 + 2.0 * ((float)rand() / RAND_MAX);
        particles[i].vy = -1.0 + 2.0 * ((float)rand() / RAND_MAX);
        particles[i].vz = -1.0 + 2.0 * ((float)rand() / RAND_MAX);
        particles[i].lifetime = (float)(rand() % MAX_LIFETIME);
    }
}

void updateParticles() {
    for (int i = 0; i < NUM_PARTICLES; i++) {
        particles[i].x += particles[i].vx * 0.01;
        particles[i].y += particles[i].vy * 0.01;
        particles[i].z += particles[i].vz * 0.01;
        particles[i].lifetime -= 0.01;
        
        if (particles[i].lifetime <= 0.0) {
            particles[i].x = 0.0;
            particles[i].y = 0.0;
            particles[i].z = 0.0;
            particles[i].vx = -1.0 + 2.0 * ((float)rand() / RAND_MAX);
            particles[i].vy = -1.0 + 2.0 * ((float)rand() / RAND_MAX);
            particles[i].vz = -1.0 + 2.0 * ((float)rand() / RAND_MAX);
            particles[i].lifetime = (float)(rand() % MAX_LIFETIME);
        }
    }
}

void drawParticles() {
    for (int i = 0; i < NUM_PARTICLES; i++) {
        glPushMatrix();
        glTranslatef(particles[i].x, particles[i].y, particles[i].z);
        glColor3f(1.0, 0.0, 0.0);
        glutSolidSphere(0.1, 10, 10);
        glPopMatrix();
    }
}

void display() {
    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
    
    glMatrixMode(GL_MODELVIEW);
    glLoadIdentity();
    gluLookAt(0.0, 0.0, 5.0, 0.0, 0.0, 0.0, 0.0, 1.0, 0.0);
    
    drawParticles();
    
    glutSwapBuffers();
}

void reshape(int width, int height) {
    glViewport(0, 0, width, height);
    
    glMatrixMode(GL_PROJECTION);
    glLoadIdentity();
    gluPerspective(45.0, (float)width / (float)height, 0.1, 100.0);
}

void idle() {
    updateParticles();
    glutPostRedisplay();
}

int main(int argc, char** argv) {
    glutInit(&argc, argv);
    glutInitDisplayMode(GLUT_DOUBLE | GLUT_RGB | GLUT_DEPTH);
    glutInitWindowSize(800, 600);
    glutCreateWindow("3D Heart Particle");
    
    initParticles();
    
    glutDisplayFunc(display);
    glutReshapeFunc(reshape);
    glutIdleFunc(idle);
    
    glEnable(GL_DEPTH_TEST);
    
    glutMainLoop();
    
    return 0;
}