Implemented add-blank

[paperjam.git] / jam.h

diff --git a/jam.h b/jam.h
index 47d80be2e534b5d811958d27c8225fd3d2888e00..31510d8c2b5f3469d3e6ab831919df33b92d231a 100644 (file)
--- a/jam.h
+++ b/jam.h
@@ -7,6 +7,7 @@
 #include <vector>
 #include <list>
 #include <unordered_map>
+#include <cmath>
 
 using namespace std;
 
@@ -16,6 +17,16 @@ typedef unsigned int uint;
 #define UNUSED __attribute__((unused))
 #define FORMAT_CHECK(x,y,z) __attribute__((format(x,y,z)))
 
+static inline bool is_zero(double z)
+{
+  return fabs(z) < 0.001;
+}
+
+static inline bool is_equal(double x, double y)
+{
+  return is_zero(x-y);
+}
+
 #include "pdf-tools.h"
 
 /*** Representation of commands ***/
@@ -65,13 +76,14 @@ struct page {
   double height;
   BBox bbox;           // Bounds useful contents
   virtual void render(out_context *out UNUSED, pdf_matrix xform UNUSED) { abort(); }
-  page(double _w=0, double _h=0) : width(_w), height(_h) { }
-  page(page *p) {
-    index = p->index;
-    width = p->width;
-    height = p->height;
-    bbox = p->bbox;
-  }
+  page(double _w=0, double _h=0) : index(0), width(_w), height(_h), bbox() { }
+  page(page *p)
+    {
+      index = p->index;
+      width = p->width;
+      height = p->height;
+      bbox = p->bbox;
+    }
 };
 
 struct empty_page : public page {