# HG changeset patch
# User Steve Losh <steve@stevelosh.com>
# Date 1521847685 14400
# Node ID 2c3734fe6cd178624f24c252f61a2a08b252fd6d
# Parent  b098ec32e059a840818cb01b63a47a5cf3702822
Add plot output

diff -r b098ec32e059 -r 2c3734fe6cd1 flax.asd
--- a/flax.asd	Fri Mar 23 19:18:28 2018 -0400
+++ b/flax.asd	Fri Mar 23 19:28:05 2018 -0400
@@ -32,7 +32,8 @@
      (:module "drawing" :serial t
       :components ((:file "api")
                    (:file "png")
-                   (:file "svg")))
+                   (:file "svg")
+                   (:file "plot")))
      (:module "looms" :serial nil
       :components
       ((:file "001-triangles")
diff -r b098ec32e059 -r 2c3734fe6cd1 src/drawing/api.lisp
--- a/src/drawing/api.lisp	Fri Mar 23 19:18:28 2018 -0400
+++ b/src/drawing/api.lisp	Fri Mar 23 19:28:05 2018 -0400
@@ -183,9 +183,16 @@
 (defgeneric write-file (canvas filename))
 
 
+;;;; File Extensions ----------------------------------------------------------
+(defgeneric file-extension (type))
+
+(defmethod file-extension (type)
+  (string-downcase (symbol-name type)))
+
+
 ;;;; Toplevel -----------------------------------------------------------------
 (defun full-filename (filename canvas-type)
-  (format nil "~A.~A" filename (string-downcase (symbol-name canvas-type))))
+  (format nil "~A.~A" filename (file-extension canvas-type)))
 
 (defmacro with-rendering
     ((canvas-symbol canvas-type filename width height &key
diff -r b098ec32e059 -r 2c3734fe6cd1 src/drawing/plot.lisp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/drawing/plot.lisp	Fri Mar 23 19:28:05 2018 -0400
@@ -0,0 +1,18 @@
+(in-package :flax.drawing)
+
+;;; A plot is an SVG without the square background.
+;;; TODO: shell out to svgsort automatically?
+
+
+(defclass* (plot-canvas :conc-name "") (svg-canvas) ())
+
+(defmethod make-canvas ((type (eql :plot)) &key height width)
+  (let ((scene (svg:make-svg-toplevel 'svg:svg-1.1-toplevel
+                                      :height height :width width)))
+    (make-instance 'plot-canvas
+      :height height
+      :width width
+      :scene scene)))
+
+(defmethod file-extension ((type (eql :plot)))
+  "svg")
diff -r b098ec32e059 -r 2c3734fe6cd1 src/looms/004-turtle-curves.lisp
--- a/src/looms/004-turtle-curves.lisp	Fri Mar 23 19:18:28 2018 -0400
+++ b/src/looms/004-turtle-curves.lisp	Fri Mar 23 19:28:05 2018 -0400
@@ -314,9 +314,9 @@
 
 
 
-;; (time (loom 12 "out" :svg 800 800
+;; (time (loom 12 "out" :plot 800 800
 ;;             ;; :l-system *hexagonal-gosper-curve*
-;;             ;; :iterations 5 
+;;             :iterations 5 
 ;;             ;; :starting-angle (- 1/4tau)
 ;;             ))