From 6c9c0b8a29cd0eb64e3f1103ca3363ccff7b3eba Mon Sep 17 00:00:00 2001
From: neoraider <devnull@localhost>
Date: Sat, 23 Jun 2007 19:00:05 +0000
Subject: zoomedit: Implemented geometry functions.

---
 draw.c | 33 ++++++++++++++++++++++++++-------
 1 file changed, 26 insertions(+), 7 deletions(-)

(limited to 'draw.c')

diff --git a/draw.c b/draw.c
index 11840ee..f782ddd 100644
--- a/draw.c
+++ b/draw.c
@@ -1,5 +1,6 @@
 #include "draw.h"
 #include "level.h"
+#include "geometry.h"
 #include <gtk/gtk.h>
 #include <cairo/cairo.h>
 
@@ -7,18 +8,31 @@
 static double scale = 100.0;
 static double xTranslate = 0.0, yTranslate = 0.0;
 
-static void room2path(cairo_t *cr, ROOM *room) {
+
+static void room2path(cairo_t *cr, ROOM *room, RECTANGLE *rect) {
   int i;
+  ROOM room2 = {0, NULL};
   
-  
+  // no vertices
   if(room->nVertices == 0) return;
   
-  cairo_move_to(cr, room->vertices[0].x, room->vertices[0].y);
+  if(rect)
+    simplifyPolygon(room, rect, &room2);
+  else
+    room2 = *room;
+  
+  if(room2.nVertices == 0) return;
   
-  for(i = 1; i < room->nVertices; i++)
-    cairo_line_to(cr, room->vertices[i].x, room->vertices[i].y);
+  cairo_new_sub_path(cr);
+  
+  for(i = 0; i < room2.nVertices; i++) {
+    cairo_line_to(cr, room2.vertices[i].x, room2.vertices[i].y);
+  }
   
   cairo_close_path(cr);
+  
+  if(rect && room2.vertices)
+    free(room2.vertices);
 }
 
 gboolean drawTopView(GtkWidget *widget, GdkEventExpose *event, gpointer data) {
@@ -26,21 +40,26 @@ gboolean drawTopView(GtkWidget *widget, GdkEventExpose *event, gpointer data) {
   ROOM room = {sizeof(vertices)/sizeof(vertices[0]), vertices};
   LEVEL lvl = {1, &room};
   cairo_t *cr;
+  RECTANGLE rect = {-5, -5, widget->allocation.width+10, widget->allocation.height+10};
   int i;
   
   
   cr = gdk_cairo_create(widget->window);
   
-  cairo_rectangle(cr, event->area.x, event->area.y, event->area.width, event->area.height);
+  gdk_cairo_region(cr, event->region);
   cairo_clip(cr);
   
   cairo_translate(cr, getImageWidth()/2-xTranslate, getImageHeight()/2-yTranslate);
   cairo_scale(cr, scale, scale);
   
+  cairo_device_to_user(cr, &rect.x, &rect.y);
+  cairo_device_to_user_distance(cr, &rect.width, &rect.height);
+  
   cairo_set_line_width(cr, 1.0/scale);
+  cairo_set_line_join(cr, CAIRO_LINE_JOIN_MITER);
   
   for(i = 0; i < lvl.nRooms; i++)
-    room2path(cr, &lvl.rooms[i]);
+    room2path(cr, &lvl.rooms[i], &rect);
   
   cairo_set_source_rgba(cr, 0.0, 0.7, 1.0, 0.3);
   cairo_fill_preserve(cr);
-- 
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