faster logo build by cutting logo out of stl instead of re-rendering full case every build.

Author: gluap

Makefile

@@ -50,9 +50,9 @@ render/assembly.gif: assembly.scad $(SRCS)
 # $3: logo part (main|highlight)
 # $4: logo mode (normal|inverted)
 define logo-part-rule
-export/logo/$(1)/$(shell basename $(2))-$(4)-$(3).stl: src/$(2).scad logo/$(1)/$(shell basename $(2)).svg
+export/logo/$(1)/$(shell basename $(2))-$(4)-$(3).stl: src/$(2).scad logo/$(1)/$(shell basename $(2)).svg export/$(2).stl
 	@mkdir -p $$(shell dirname $$@)
-	$$(OPENSCAD) $$(OPENSCAD_OPTIONS) -D orient_for_printing=true -D logo_enabled=true -D 'logo_mode="$(4)"' -D 'logo_part="$(3)"' -D 'logo_name="$(1)"' -o $$@ $$<
+	$$(OPENSCAD) $$(OPENSCAD_OPTIONS) -D orient_for_printing=true -D logo_enabled=true -D logo_use_prebuild=true -D 'logo_mode="$(4)"' -D 'logo_part="$(3)"' -D 'logo_name="$(1)"' -o $$@ $$<
 
 logo-$1-$4: export/logo/$(1)/$(shell basename $(2))-$(4)-$(3).stl
 logo-$1: export/logo/$(1)/$(shell basename $(2))-$(4)-$(3).stl

src/MainCase/MainCase.scad

@@ -575,7 +575,11 @@ if (logo_generate_templates) {
   MainCase();
 } else {
   GenerateWithLogo() {
-    MainCase();
+    if (logo_use_prebuild) {
+      import("../../export/MainCase/MainCase.stl");
+    } else {
+      MainCase();
+    }
 
     mirror([0, 1, 0])
     rotate([0, 0, -90])

src/MainCase/MainCaseLid.scad

@@ -133,8 +133,11 @@ if (logo_generate_templates) {
   MainCaseLid();
 } else {
   GenerateWithLogo() {
-    MainCaseLid();
-
+    if (logo_use_prebuild) {
+      import("../../export/MainCase/MainCaseLid.stl");
+    } else {
+      MainCaseLid();
+    }
     mirror([1, 0, 0])
     translate([-104, -72-72, 0])
     import(str("../../logo/", logo_name, "/MainCaseLid.svg"));

variables.scad

@@ -290,6 +290,7 @@ logo_convexity = 10; // Increase if you get artifacts in the logo
 // Please do not modify these, they are overwritten by the Makefile when you
 // generate parts with logos.
 logo_enabled = false; // set to true to generate logos into parts that support it
+logo_use_prebuild = false; // used by makefile to speed up logo file export
 logo_generate_templates = false; // set to true to generate 2D template SVGs
 logo_name = "OpenBikeSensor"; // name of a folder inside `logo/`
 logo_mode = "normal"; // "normal" or "inverted"