90 lines
2.1 KiB
C
90 lines
2.1 KiB
C
#include "particlesystem.h"
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#include "initOpenGL.h"
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#include "utils.h"
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#define PARTICLE_AMOUNT 10000
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void calcPos(particle *p, float dt);
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void calcCol(particle *p);
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int main()
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{
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/************* INIT *************/
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// Init OpenGL and GLFW
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initGLFW();
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setErrorCallbackGL();
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int width = WIDTH, height = HEIGHT;
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GLFWwindow *window = createGLFWWindow(WIDTH, HEIGHT, "Informatikprojekt - OpenGL CPU");
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setCurrentContextGL(window);
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setFramebufferSizeCallbackGL(window);
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// glad
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initGlad();
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/************* PARTICLE SYSTEM *************/
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vector3f *epos1 = initVector3f(0, 0, 0);
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emitter *e1 = initEmitter(epos1, PARTICLE_AMOUNT);
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particle_system *ps = initParticleSystem(1);
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(ps->emitters)[0] = e1;
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initRandomParticles(e1);
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/************* RENDER LOOP *************/
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double time, tFrame, tLast = 0;
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while (!glfwWindowShouldClose(window))
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{
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time = glfwGetTime();
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tFrame = time - tLast;
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tLast = time;
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/*** UPDATE ***/
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updateParticles((float) tFrame, ps, calcPos, calcCol);
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/*** RENDER ***/
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glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
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glfwGetFramebufferSize(window, &width, &height);
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emitter *e;
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particle *p;
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vector3f *pos;
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for (int j = 0; j < ps->eamount; j++)
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{
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e = (ps->emitters)[j];
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for (int i = 0; i < e->pamount; i++)
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{
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p = (e->particles)[i];
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pos = p->position;
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glColor3f(p->color->x, p->color->y, p->color->z);
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glBegin(GL_POINTS);
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glVertex3f(pos->x, pos->y, pos->z);
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glEnd();
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}
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}
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glfwSwapBuffers(window);
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glfwPollEvents();
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}
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//END
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terminateGLFW(window);
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freeParticleSystem(ps);
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return 0;
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}
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void calcPos(particle *p, float dt)
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{
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p->position->x += p->velocity->x * dt;
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p->position->y += p->velocity->y * dt;
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p->position->z += p->velocity->z * dt;
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}
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void calcCol(particle *p)
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{
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p->color->x -= 0.00001f;
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p->color->y -= 0.00001f;
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p->color->z -= 0.00001f;
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}
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