Add plates and refined wall and pillar sizes

Lego.json

@@ -1,19 +1,34 @@
 {
     "parameterSets": {
         "Brick_4x2": {
-            "type": "1",
+            "type": "brick",
             "studs_x": "4",
             "studs_y": "2"
         },
         "Brick_2x2": {
-            "type": "1",
+            "type": "brick",
             "studs_x": "2",
             "studs_y": "2"
         },
         "Brick_2x1": {
-            "type": "1",
+            "type": "brick",
+            "studs_x": "2",
+            "studs_y": "1"
+        },
+        "Plate_4x2": {
+            "type": "plate",
+            "studs_x": "4",
+            "studs_y": "2"
+        },
+        "Plate_2x2": {
+            "type": "plate",
             "studs_x": "2",
             "studs_y": "2"
+        },
+        "Plate_2x1": {
+            "type": "plate",
+            "studs_x": "2",
+            "studs_y": "1"
         }
     },
     "fileFormatVersion": "1"

Lego.scad

@@ -1,15 +1,19 @@
 /* [Lego Type] */
-type = 1; // [1:Standard]
+type = "brick"; // ["brick":Brick, "plate":Plate]
 studs_x = 4;
 studs_y = 2;
 
 /* [Hidden] */
-block_height = 9.6; // The height of the block without studs
+block_height =
+	type == "brick" ? 9.6 :
+	type == "plate" ? 3.2 :
+	0;
 length_per_stud = 31.8 / 4;
 stud_details = 4 * ($preview ? 5 : 10);
-wall_width = 1.4;
+wall_width = 1.5;
 ceiling_width = 1;
 
+assert(block_height > 0, "Invalid block height. Perhaps type is not correct?");
 assert(studs_x >= studs_y, "studs_x must be equal or larger than studs_y");
 
 module stud() {
@@ -36,7 +40,7 @@ module base() {
 }
 
 module pillar() {
-	cylinder(h = block_height, d = 6.51, $fn = stud_details);
+	cylinder(h = block_height, d = 6.48, $fn = stud_details);
 }
 
 module small_pillar() {

Makefile

@@ -1,8 +1,13 @@
 PARAMETERS := $(shell cat Lego.json | grep -v '"parameterSets": ""' | jq -r '.parameterSets | keys[]')
 STL = $(PARAMETERS:%=%.stl)
+SCAD = Lego.scad
+CONFIG = Lego.json
 
 all: $(STL)
 
-$(STL): Lego.scad Lego.json
-	openscad -o $@ -P $@ $<
+clean:
+	rm -f $(STL)
+
+$(STL): $(SCAD) $(CONFIG) Makefile
+	openscad -o $@ -p $(CONFIG) -P $(@:%.stl=%) $(SCAD)