/* Author: Josh Holtrop
 * DornerWorks screensaver
 * SSMode is base class that provides common functionality for
 * screensaver modes. It should be extended by a screensaver
 * mode implementing class.
 */

#include "SSMode.h"

SSMode::SSMode(SSMain * _SSMain)
    : m_SSMain(_SSMain)
{
    m_startTick = SDL_GetTicks();
}

SSMode::~SSMode()
{
}

/* update the number of elapsed milliseconds */
void SSMode::update()
{
    Uint32 ticks = SDL_GetTicks();
    m_elapsed = ticks - m_startTick;
}

/* push an OpenGL matrix onto the matrix stack for a given
 * ODE body position and rotation */
void SSMode::pushTransform(const dReal pos[3], const dReal R[12])
{
    GLfloat matrix[16];
    matrix[0] = R[0];
    matrix[1] = R[4];
    matrix[2] = R[8];
    matrix[3] = 0;
    matrix[4] = R[1];
    matrix[5] = R[5];
    matrix[6] = R[9];
    matrix[7] = 0;
    matrix[8] = R[2];
    matrix[9] = R[6];
    matrix[10] = R[10];
    matrix[11] = 0;
    matrix[12] = pos[0];
    matrix[13] = pos[1];
    matrix[14] = pos[2];
    matrix[15] = 1;
    glPushMatrix();
    glMultMatrixf(matrix);
}