change output file name, recommend wood size

Makefile

@@ -7,7 +7,7 @@ WOBJS := stl.wo main.wo triangle.wo image.wo
 	    @gcc $(CFLAGS) -Wno-address-of-packed-member -flto -ffunction-sections  -Wall -W -O3 -g -c $< -o $@
 
 %.wo : %.c fenrus.h Makefile
-	    x86_64-w64-mingw32-gcc -Wno-address-of-packed-member -Wall -W -O3 -g -c $< -o $@
+	    @x86_64-w64-mingw32-gcc -Wno-address-of-packed-member -Wall -W -O3 -g -c $< -o $@
 
 
 stl2png: Makefile fenrus.h $(OBJS)

main.c

@@ -8,13 +8,15 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <unistd.h>
+#include <string.h>
 
 #include "fenrus.h"
 
 
 
 int main(int argc, char **argv)
 {	
+	char *output, *stl;
 	if (argc <= 1) {
 		printf("Usage:\n\tstl2c2d <file.stl>\n");
 		return EXIT_SUCCESS;
@@ -26,7 +28,16 @@ int main(int argc, char **argv)
 	scale_design(512);
 	print_triangle_stats();
 
-	create_image("/var/www/html/stl/output.png");
+	output = strdup(argv[1]);
+	stl = strstr(output, ".stl");
+	if (stl)
+		strcpy(stl, ".png");
+	else
+		output = strdup("output.png");
+
+
+	create_image(output);
+	printf("Wrote %s\n", output);
 	return EXIT_SUCCESS;
 
 }

triangle.c

@@ -158,11 +158,15 @@ double scale_Z(void)
 }
 void print_triangle_stats(void)
 {
-	printf("Space allocated for triangles : %i\n", maxtriangle);
-	printf("Actual number of triangles    : %i\n", current);
+	double scale;
+	printf("Number of triangles in file   : %i\n", current);
 	printf("Span of the design	      : (%5.1f, %5.1f, %5.1f) - (%5.1f, %5.1f, %5.1f) \n",
 			minX, minY, minZ, maxX, maxY, maxZ);
 	printf("Image size                    : %i x %i \n", image_X(), image_Y());
+
+	scale = 0.75 / maxZ;
+	printf("Recommended wood size         : %5.2f\"x %5.2f\" x %5.2f\" \n",
+		scale * maxX, scale * maxY, scale * maxZ);
 }
 
 static double point_to_the_left(double X, double Y, double AX, double AY, double BX, double BY)