#include "vbo.h"

Vbo::Vbo(GLfloat *data, size_t len) : len(len)
{
    this->data = new GLfloat[len];
    memcpy(this->data, data, len);
    glGenBuffers(1, &vbo);
    glBindBuffer(GL_ARRAY_BUFFER, vbo);
    glBufferData(GL_ARRAY_BUFFER, len,
            this->data, GL_STATIC_DRAW);
    glBindBuffer(GL_ARRAY_BUFFER, 0);
}

void Vbo::draw()
{
    glEnableClientState(GL_VERTEX_ARRAY);
    glBindBuffer(GL_ARRAY_BUFFER, vbo);
    glVertexPointer(3, GL_FLOAT, 0, 0);
    glDrawArrays(GL_QUADS, 0, 4);
    glBindBuffer(GL_ARRAY_BUFFER, 0);
    glDisableClientState(GL_VERTEX_ARRAY);
}