import processing.pdf.*;

int resolution = 72;

//box dimensions in inches
float boxSizeInches = 1.5;
float boxThicknessInches = .13;
float stemHeightInches = 3.5;
float kerfInches = 0.008;
//box dimensions in pixels
int boxSize = round(boxSizeInches * resolution);
int boxThickness = round(boxThicknessInches * resolution);
int stemWidth = round(boxSize/3);
int stemHeight = round(stemHeightInches * resolution);
float kerf = kerfInches * resolution;

int center = round((boxSize + 25)/2);
  int upLeftX = center - (boxSize/2);
  int upLeftY = 10;

void setup(){
  size(boxSize*2+50+stemWidth,boxSize*3 + 50);
  noLoop();  
  beginRecord(PDF, "lampshade"+boxSizeInches+"x"+boxThicknessInches+".pdf"); 
}

void draw(){
//stem
  int stemUpLeftX = upLeftX;
  makeStem(stemUpLeftX, upLeftY);
  makeStem(stemUpLeftX+stemWidth-boxThickness+2,upLeftY-3);
  makeStem(stemUpLeftX+(stemWidth-boxThickness)*2+4,upLeftY-6);
    makeStem(stemUpLeftX+(stemWidth-boxThickness)*3+6,upLeftY-9);
  endRecord();
}

void makeStem(int stemUpLeftX, int upLeftY){
    beginShape();
  vertex(stemUpLeftX, upLeftY);
  vertex(stemUpLeftX + stemWidth/2, upLeftY);
  vertex(stemUpLeftX + stemWidth/2, upLeftY + boxThickness);
  vertex(stemUpLeftX + stemWidth - boxThickness, upLeftY + boxThickness);
  vertex(stemUpLeftX + stemWidth - boxThickness, upLeftY + stemHeight/2);
  vertex(stemUpLeftX + stemWidth, upLeftY + stemHeight/2);
  vertex(stemUpLeftX + stemWidth, upLeftY + stemHeight);
  vertex(stemUpLeftX + stemWidth/2, upLeftY + stemHeight);
  vertex(stemUpLeftX + stemWidth/2, upLeftY + stemHeight - boxThickness);
  vertex(stemUpLeftX + boxThickness, upLeftY + stemHeight - boxThickness);
  vertex(stemUpLeftX + boxThickness, upLeftY + stemHeight/2);
  vertex(stemUpLeftX, upLeftY + stemHeight/2);
 
  endShape(CLOSE);
}