import processing.svg.*;

int n = 0;
int t = 0; //max=4

String[] types = {
  "all",
  "marks",
  "frame",
  "bolex",
  "field"
};

String TYPE = types[t];
String NAME = "guide" + "_" + TYPE;

float IN = 25.4;
float MM = 96 / IN;

float RATIO = 4.0 / 3.0;

//9x12" sheet!!!!!
//Vertical measurements diff for 8 1/2"

float totalW = 107.0; //mm
float totalH = 99.0; //mm

int W = round( ((totalW * 2) / IN) * 96);
int H = round( ((totalH * 2) / IN) * 96);

float pad = 10.0; //mm
float calcH = (totalW - (pad * 2.0)) / RATIO;
float calcTop = (totalH - calcH) / 2.0;


float markLeft = (pad / 2.0) * MM;
float markTop = (calcTop - (pad / 2.0)) * MM;
float markRight = (totalW - (pad / 2.0)) * MM;
float markBottom = (totalH - (calcTop - (pad / 2.0))) * MM;

float frameLeft = pad * MM;
float frameTop = calcTop * MM;
float frameRight = (totalW - pad) * MM;
float frameBottom = (totalH - calcTop) * MM;

void settings () {
  size(W, H, SVG, NAME + ".svg");
}

void setup () {
  noFill();
  stroke(0);
  noLoop();
  println(calcH);
}

void mark (float x, float y) {
  float len = (pad / 4.0) * MM;
  line(x - len, y, x + len, y);
  line(x, y - len, x, y + len);
}

void marks () {
  mark(markLeft, markTop);
  mark(markRight, markTop);
  mark(markLeft, markBottom);
  mark(markRight, markBottom);
}

void frame () {
  line(frameLeft, frameTop, frameRight, frameTop);
  line(frameRight, frameTop, frameRight, frameBottom);
  line(frameRight, frameBottom, frameLeft, frameBottom);
  line(frameLeft, frameBottom, frameLeft, frameTop);
}

//bolex viewfinder frame, 90% of full
void bolex () {
  float fiveX = (frameRight - frameLeft) / 20.0;
  float fiveY = (frameBottom - frameTop) / 20.0;
  float bolexLeft = frameLeft + fiveX;
  float bolexRight = frameRight - fiveX;
  float bolexTop = frameTop + fiveY;
  float bolexBottom = frameBottom - fiveY;
  
  line(bolexLeft, bolexTop, bolexRight, bolexTop);
  line(bolexRight, bolexTop, bolexRight, bolexBottom);
  line(bolexRight, bolexBottom, bolexLeft, bolexBottom);
  line(bolexLeft, bolexBottom, bolexLeft, bolexTop);
}

void field () {
  float centerX = frameLeft + ((frameRight - frameLeft) / 2.0);
  float centerY = frameTop + ((frameBottom - frameTop) / 2.0);
  float stepX = (frameRight - frameLeft) / 20.0;
  float stepY = (frameBottom - frameTop) / 20.0;
  line(centerX, frameTop, centerX, frameBottom);
  line(frameLeft, centerY, frameRight, centerY);
  for (int i = 1; i < 10; i++) {
    line(centerX - stepX, centerY + (i * stepY), centerX + stepX, centerY + (i * stepY));
    line(centerX - stepX, centerY - (i * stepY), centerX + stepX, centerY - (i * stepY));
    line(centerX + (i * stepX), centerY - stepY, centerX + (i * stepX), centerY + stepY);
    line(centerX - (i * stepX), centerY - stepY, centerX - (i * stepX), centerY + stepY);
  }
}

void draw () {
  if (TYPE == "marks" || TYPE == "all") {
    marks();
  }
  if (TYPE == "frame" || TYPE == "all") {
    frame();
  }
  if (TYPE == "bolex" || TYPE == "all") {
    bolex();
  }
  if (TYPE == "field" || TYPE == "all") {
    field();
  }
  
  //bisect
  /*
  line(0,H/2,W,H/2);
  line(W/2,0,W/2,H);
  */
}