/******************************* PLANAR FLOP 3D *******************************\
| Version 2 of the planar flop, doing more complicated maths and 3D vectors    |
| 'n stuff. Making this function found the bug of reversed z axis line drawing |
|                                                                              |
| Modified By: S. Dugre to use asynchronous timer                              |
\******************************************************************************/

int planarCase;

void planarFlop3D() {

  if (currentState != lastState) {
    
    lastState = currentState;
    Serial.print("New State = ");
    Serial.println(currentState);

    currentTimer = 0;
    maxTimer = 3125; // 50 ms

    planarCase = 0;
  }  

  if (timerReset) {
    switch (planarCase) {
      case 0:  
        for (int y = 3; y > 0; y--) {
          for (int z = 0; z < 4; z++) drawLine(color, 0, 3, z, 3, y, z);
          flushBuffer();
          clearBuffer();
          //delay(animationSpeed);
          planarCase++;
          currentTimer = 0;
          timerReset = false;
        }

      case 1:
        for (int x = 3; x > 0; x--) {
          for (int z = 0; z < 4; z++) drawLine(color, 0, 3, z, x, 0, z);
          flushBuffer();
          clearBuffer();
          //delay(animationSpeed);
          planarCase++;
          currentTimer = 0;
          timerReset = false;
        }

      case 2:
        for (int x = 0; x < 3; x++) {
          for (int y = 0; y < 4; y++) drawLine(color, 0, y, 0, x, y, 3);
          flushBuffer();
          clearBuffer();
          //delay(animationSpeed);
          planarCase++;
          currentTimer = 0;
          timerReset = false;
        }

      case 3:
        for (int z = 3; z > 0; z--) {
          for (int y = 0; y < 4; y++) drawLine(color, 0, y, 0, 3, y, z);
          flushBuffer();
          clearBuffer();
          //delay(animationSpeed);
          planarCase++;
          currentTimer = 0;
          timerReset = false;
        }

      case 4:
        for (int z = 0; z < 3; z++) {
          for (int x = 0; x < 4; x++) drawLine(color, x, 0, 0, x, 3, z);
          flushBuffer();
          clearBuffer();
          //delay(animationSpeed);
          planarCase++;
          currentTimer = 0;
          timerReset = false;
        }

      case 5:
        for (int y = 3; y > 0; y--) {
          for (int x = 0; x < 4; x++) drawLine(color, x, 0, 0, x, y, 3);
          flushBuffer();
          clearBuffer();
          //delay(animationSpeed);
          planarCase++;
          currentTimer = 0;
          timerReset = false;
        }
        
      case 6:
        for (int y = 0; y < 3; y++) {
          for (int z = 0; z < 4; z++) drawLine(color, 3, 0, z, 0, y, z);
          flushBuffer();
          clearBuffer();
          //delay(animationSpeed);
          planarCase++;
          currentTimer = 0;
          timerReset = false;
        }

      case 7:
        for (int x = 0; x < 3; x++) {
          for (int z = 0; z < 4; z++) drawLine(color, 3, 0, z, x, 3, z);
          flushBuffer();
          clearBuffer();
          //delay(animationSpeed);
          planarCase++;
          currentTimer = 0;
          timerReset = false;
        }

      case 8:
        for (int x = 3; x > 0; x--) {
          for (int y = 0; y < 4; y++) drawLine(color, 3, y, 3, x, y, 0);
          flushBuffer();
          clearBuffer();
          //delay(animationSpeed);
          planarCase++;
          currentTimer = 0;
          timerReset = false;
        }
      case 9:
        for (int z = 0; z < 3; z++) {
          for (int y = 0; y < 4; y++) drawLine(color, 3, y, 3, 0, y, z);
          flushBuffer();
          clearBuffer();
          //delay(animationSpeed);
          planarCase++;
          currentTimer = 0;
          timerReset = false;
        }

      case 10:  
        for (int z = 3; z > 0; z--) {
          for (int x = 0; x < 4; x++) drawLine(color, x, 3, 3, x, 0, z);
          flushBuffer();
          clearBuffer();
          //delay(animationSpeed);
          planarCase++;
          currentTimer = 0;
          timerReset = false;
        }

      case 11:
        for (int y = 0; y < 3; y++) {
          for (int x = 0; x < 4; x++) drawLine(color, x, 3, 3, x, y, 0);
          flushBuffer();
          clearBuffer();
          //delay(animationSpeed);
          planarCase = 0;
          currentTimer = 0;
          timerReset = false;
        }
    color = nextColor(color);
    }
  }
}