Translated GIFPlot example to Guile Scheme.

git-svn-id: https://swig.svn.sourceforge.net/svnroot/swig/trunk@740 626c5289-ae23-0410-ae9c-e8d60b6d4f22

SWIG/Examples/GIFPlot/Guile/simple/Makefile

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+TOP        = ../../..
+SWIG       = $(TOP)/../swig
+SWIGOPT    = 
+SRCS       = 
+TARGET     = simple
+INTERFACE  = simple.i
+LIBS       = -L../.. -lgifplot
+INCLUDE    = -I../../Include
+
+all:: static
+
+static::
+	$(MAKE) -f $(TOP)/Makefile SRCS='$(SRCS)' SWIG='$(SWIG)' \
+	INCLUDE='$(INCLUDE)' LIBS='$(LIBS)' SWIGOPT='$(SWIGOPT)' \
+	TARGET='gifguile' INTERFACE='$(INTERFACE)' guile_static
+
+clean::
+	rm -f *_wrap* *.o *~ *.so gifguile .~* core *.gif
+
+

SWIG/Examples/GIFPlot/Guile/simple/README

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+This is a very minimalistic example in which just a few functions
+and constants from library are wrapped and used to draw some simple
+shapes.  Run `gifguile -s runme.scm'.

SWIG/Examples/GIFPlot/Guile/simple/runme.scm

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+;; Draw some simple shapes
+(display "Drawing some basic shapes\n")
+
+(define cmap (new-ColorMap))
+(define f (new-FrameBuffer 400 400))
+
+;; Clear the picture
+(FrameBuffer-clear f (BLACK))
+
+;; Make a red box
+(FrameBuffer-box f 40 40 200 200 (RED))
+
+;; Make a blue circle
+(FrameBuffer-circle f 200 200 40 (BLUE))
+
+;; Make green line
+(FrameBuffer-line f 10 390 390 200 (GREEN))
+
+;; Write an image out to disk
+
+(FrameBuffer-writeGIF f cmap "image.gif")
+(display "Wrote image.gif\n")
+
+(delete-FrameBuffer f)
+(delete-ColorMap cmap)
+

SWIG/Examples/GIFPlot/Guile/simple/simple.i

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+/* This example shows a very simple interface wrapping a few 
+   primitive declarations */
+
+%module simple
+%{
+#include "gifplot.h"
+%}
+
+typedef unsigned int Pixel;
+
+/* Here are a few useful functions */
+
+ColorMap    *new_ColorMap(char *filename = 0);
+void         delete_ColorMap(ColorMap *cmap);
+
+FrameBuffer *new_FrameBuffer(unsigned int width, unsigned int height);
+void         delete_FrameBuffer(FrameBuffer *frame);
+void         FrameBuffer_clear(FrameBuffer *frame, Pixel color);
+void         FrameBuffer_line(FrameBuffer *frame, int x1, int y1, int x2, int y2, Pixel color);
+void         FrameBuffer_box(FrameBuffer *frame, int x1, int y1, int x2, int y2, Pixel color);
+void         FrameBuffer_circle(FrameBuffer *frame, int x1, int y1, int radius, Pixel color);
+int          FrameBuffer_writeGIF(FrameBuffer *f, ColorMap *c, char *filename);
+
+/* And some useful constants */
+
+#define BLACK   0
+#define WHITE   1
+#define RED     2
+#define GREEN   3
+#define BLUE    4
+#define YELLOW  5
+#define CYAN    6
+#define MAGENTA 7
+