# HG changeset patch
# User John Tsiombikas <nuclear@member.fsf.org>
# Date 1450415239 -7200
# Node ID 6e980fddbf3b962145d377cc9ce131dabc5175b6
# Parent  2b7ae76c173fd2eb1fcd0c7cd3eda91d7723d0b8
curve export

diff -r 2b7ae76c173f -r 6e980fddbf3b curvedraw.vcxproj
--- a/curvedraw.vcxproj	Fri Dec 18 03:47:10 2015 +0200
+++ b/curvedraw.vcxproj	Fri Dec 18 07:07:19 2015 +0200
@@ -82,12 +82,14 @@
   <ItemGroup>
     <ClCompile Include="src\app.cc" />
     <ClCompile Include="src\curve.cc" />
+    <ClCompile Include="src\curvefile.cc" />
     <ClCompile Include="src\main.cc" />
     <ClCompile Include="src\widgets.cc" />
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="src\app.h" />
     <ClInclude Include="src\curve.h" />
+    <ClInclude Include="src\curvefile.h" />
     <ClInclude Include="src\opengl.h" />
     <ClInclude Include="src\widgets.h" />
   </ItemGroup>
diff -r 2b7ae76c173f -r 6e980fddbf3b curvedraw.vcxproj.filters
--- a/curvedraw.vcxproj.filters	Fri Dec 18 03:47:10 2015 +0200
+++ b/curvedraw.vcxproj.filters	Fri Dec 18 07:07:19 2015 +0200
@@ -19,6 +19,9 @@
     <ClCompile Include="src\widgets.cc">
       <Filter>src</Filter>
     </ClCompile>
+    <ClCompile Include="src\curvefile.cc">
+      <Filter>src</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="src\app.h">
@@ -33,5 +36,8 @@
     <ClInclude Include="src\widgets.h">
       <Filter>src</Filter>
     </ClInclude>
+    <ClInclude Include="src\curvefile.h">
+      <Filter>src</Filter>
+    </ClInclude>
   </ItemGroup>
 </Project>
\ No newline at end of file
diff -r 2b7ae76c173f -r 6e980fddbf3b src/app.cc
--- a/src/app.cc	Fri Dec 18 03:47:10 2015 +0200
+++ b/src/app.cc	Fri Dec 18 07:07:19 2015 +0200
@@ -7,6 +7,7 @@
 #include "app.h"
 #include "curve.h"
 #include "widgets.h"
+#include "curvefile.h"
 
 enum SnapMode {
 	SNAP_NONE,
@@ -252,6 +253,15 @@
 				post_redisplay();
 			}
 			break;
+
+		case 'e':
+		case 'E':
+			// TODO: GUI for filename at least
+			if(!save_curves(stdout, &curves[0], (int)curves.size())) {
+				fprintf(stderr, "failed to export curves\n");
+			}
+			printf("exported %d curves\n", (int)curves.size());
+			break;
 		}
 	}
 
diff -r 2b7ae76c173f -r 6e980fddbf3b src/curvefile.cc
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/curvefile.cc	Fri Dec 18 07:07:19 2015 +0200
@@ -0,0 +1,68 @@
+#include <stdlib.h>
+#include "curvefile.h"
+
+static bool save_curve(FILE *fp, const Curve *curve);
+
+bool save_curves(const char *fname, const Curve * const *curves, int count)
+{
+	FILE *fp = fopen(fname, "wb");
+	if(!fp) return false;
+
+	bool res = save_curves(fp, curves, count);
+	fclose(fp);
+	return res;
+}
+
+bool save_curves(FILE *fp, const Curve * const *curves, int count)
+{
+	fprintf(stderr, "GCURVES\ncount %d\n", count);
+
+	for(int i=0; i<count; i++) {
+		if(!save_curve(fp, curves[i])) {
+			return false;
+		}
+	}
+	return true;
+}
+
+static const char *curve_type_str(CurveType type)
+{
+	switch(type) {
+	case CURVE_LINEAR:
+		return "polyline";
+	case CURVE_HERMITE:
+		return "hermite";
+	case CURVE_BSPLINE:
+		return "bspline";
+	}
+	abort();
+}
+
+static bool save_curve(FILE *fp, const Curve *curve)
+{
+	fprintf(fp, "curve {\n");
+	fprintf(fp, "    type %s\n", curve_type_str(curve->get_type()));
+	fprintf(fp, "    cpcount %d\n", curve->size());
+	for(int i=0; i<curve->size(); i++) {
+		Vector3 cp = curve->get_homo_point(i);
+		fprintf(fp, "    cp %g %g %g\n", cp.x, cp.y, cp.z);
+	}
+	fprintf(fp, "}\n");
+	return true;
+}
+
+Curve **load_curves(const char *fname, int *countret)
+{
+	FILE *fp = fopen(fname, "rb");
+	if(!fp) return false;
+
+	Curve **res = load_curves(fp, countret);
+	fclose(fp);
+	return res;
+}
+
+Curve **load_curves(FILE *fp, int *countret)
+{
+	return 0;	// TODO
+}
+
diff -r 2b7ae76c173f -r 6e980fddbf3b src/curvefile.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/curvefile.h	Fri Dec 18 07:07:19 2015 +0200
@@ -0,0 +1,13 @@
+#ifndef CURVEFILE_H_
+#define CURVEFILE_H_
+
+#include <stdio.h>
+#include "curve.h"
+
+bool save_curves(const char *fname, const Curve * const *curves, int count);
+bool save_curves(FILE *fp, const Curve * const *curves, int count);
+
+Curve **load_curves(const char *fname, int *countret);
+Curve **load_curves(FILE *fp, int *countret);
+
+#endif	// CURVEFILE_H_
\ No newline at end of file