// -*- C -*-

pump_main_dia = 38;
pump_side_width = 5;
pump_side_thick = 5;
pump_shaft_dia = 14;
baseplate = 4;

// need reconfirm:
pump_side_height = 20;

// calculated


pump_side_outer_rad = pump_side_width + pump_main_dia/2;

module PumpSidePlan() {
  xm = baseplate + pump_main_dia/2;
  or = pump_side_outer_rad;
  difference(){
    union(){
      intersection(){
	translate([-xm, 0]) circle(r=or);
	translate([-(xm+or), -or]) square([xm+or, or*2]);
      }
      translate([-xm, -or]) square([xm, or*2]);
    }
    translate([-xm, 0]) circle(r=pump_main_dia/2);
    translate([-xm*2, 0])
      square(center=true, [pump_side_width*3, pump_shaft_dia]);
  }
}

module PumpSideElevation(){
  x3 = 0;
  x2 = x3 - baseplate;
  x1 = x2 - pump_main_dia;
  x0 = x1 - pump_side_width;
  z0 = 0;
  z1 = z0 - pump_side_thick;
  z2 = z1 - pump_side_height;

  arcx = x2-x1;
  arcy = z1-z2;

  translate([x0,z1]) square([x1-x0, z0-z1]);
  difference(){
    translate([x1,z2]) square([x3-x1, z0-z2]);
    translate([x1,z2]) scale([1,arcy/arcx]) circle(r=arcx);
  }
}

//PumpSidePlan();
PumpSideElevation();