minor bugfixes and speed improvements in polygon intersector

[swftools.git] / lib / gfxpoly / test.c

diff --git a/lib/gfxpoly/test.c b/lib/gfxpoly/test.c
index aff9208..892798a 100644 (file)
--- a/lib/gfxpoly/test.c
+++ b/lib/gfxpoly/test.c
@@ -1,6 +1,5 @@
 #include <stdlib.h>
 #include <stdio.h>
-#include <assert.h>
 #include <memory.h>
 #include <math.h>
 #include "../gfxtools.h"
@@ -53,13 +52,13 @@ gfxline_t* mkchessboard()
     unsigned int r = 0;
     int spacing = 20;
 
-    //int num_caros = 40;
-    //int l = 5;
-    //char do_centerpiece=1;
+    int num_caros = 40;
+    int l = 5;
+    char do_centerpiece=1;
 
-    int num_caros = 4;
-    int l=1;
-    char do_centerpiece=0;
+    //int num_caros = 4;
+    //int l=1;
+    //char do_centerpiece=0;
 
     for(x=-l;x<=l;x++) 
     for(y=-l;y<=l;y++) {
@@ -117,13 +116,16 @@ gfxline_t* mkchessboard()
     return b;
 }
 
+static windcontext_t onepolygon = {1};
+
 int test0()
 {
     gfxline_t* b = mkchessboard();
 
     gfxmatrix_t m;
     memset(&m, 0, sizeof(gfxmatrix_t));
-    int t = 28;
+    int t;
+    for(t=0;t<360;t++) {
     m.m00 = cos(t*M_PI/180.0);
     m.m01 = sin(t*M_PI/180.0);
     m.m10 = -sin(t*M_PI/180.0);
@@ -133,12 +135,13 @@ int test0()
     gfxline_transform(b, &m);
 
     gfxpoly_t*poly = gfxpoly_from_gfxline(b, 0.05);
-    gfxpoly_t*poly2 = gfxpoly_process(poly, &windrule_evenodd);
+    gfxpoly_t*poly2 = gfxpoly_process(poly, &windrule_evenodd, &onepolygon);
     gfxpoly_destroy(poly2);
     gfxpoly_destroy(poly);
 }
+}
 
-int test1()
+int test1(int argn, char*argv[])
 {
     gfxline_t*box1 = gfxline_makerectangle(50,50,150,150);
     // put box2 and box3 on top of each other *snicker*
@@ -166,7 +169,7 @@ int test1()
     gfxline_free(star);
 
     gfxpoly_dump(poly);
-    gfxpoly_t*poly2 = gfxpoly_process(poly, &windrule_evenodd);
+    gfxpoly_t*poly2 = gfxpoly_process(poly, &windrule_evenodd, &onepolygon);
     gfxpoly_destroy(poly2);
     gfxpoly_destroy(poly);
 }
@@ -189,11 +192,11 @@ int test_square(int width, int height, int num, double gridsize, char bitmaptest
     gfxline_free(line);
 
     windrule_t*rule = &windrule_circular;
-    gfxpoly_t*poly2 = gfxpoly_process(poly, rule);
+    gfxpoly_t*poly2 = gfxpoly_process(poly, rule, &onepolygon);
     if(bitmaptest) {
         intbbox_t bbox = intbbox_new(0, 0, width, height);
-        unsigned char*bitmap1 = render_polygon(poly, &bbox, 1.0, rule);
-        unsigned char*bitmap2 = render_polygon(poly2, &bbox, 1.0, &windrule_evenodd);
+        unsigned char*bitmap1 = render_polygon(poly, &bbox, 1.0, rule, &onepolygon);
+        unsigned char*bitmap2 = render_polygon(poly2, &bbox, 1.0, &windrule_evenodd, &onepolygon);
         if(!compare_bitmaps(&bbox, bitmap1, bitmap2)) {
             save_two_bitmaps(&bbox, bitmap1, bitmap2, "error.png");
             assert(!"bitmaps don't match");
@@ -203,7 +206,7 @@ int test_square(int width, int height, int num, double gridsize, char bitmaptest
     gfxpoly_destroy(poly);
 }
 
-int test2()
+int test2(int argn, char*argv[])
 {
     test_square(400,400, 3, 0.05, 1);
 
@@ -217,7 +220,7 @@ int test2()
 }
 
 #include "../rfxswf.h"
-void test3()
+void test3(int argn, char*argv[])
 {
 #undef N
 #undef RANGE
@@ -227,7 +230,8 @@ void test3()
     //gfxline_t*line = mkrandomshape(RANGE, N);
     //windrule_t*rule = &windrule_circular;
     gfxline_t*line = mkchessboard();
-    windrule_t*rule = &windrule_evenodd;
+    //windrule_t*rule = &windrule_evenodd;
+    windrule_t*rule = &windrule_circular;
 
     gfxmatrix_t m;
     memset(&m, 0, sizeof(m));
@@ -251,13 +255,12 @@ void test3()
         m.m11 = cos(t*M_PI/180.0);
         m.tx = RANGE*1.41/2;
         m.ty = RANGE*1.41/2;
-        printf("%d\n", t);
 
         gfxline_t*l = gfxline_clone(line);
         gfxline_transform(l, &m);
         
         gfxpoly_t*poly = gfxpoly_from_gfxline(l, 0.05);
-        gfxpoly_t*poly2 = gfxpoly_process(poly, rule);
+        gfxpoly_t*poly2 = gfxpoly_process(poly, rule, &onepolygon);
 
         tag = swf_InsertTag(tag, ST_DEFINESHAPE);
         SHAPE* s;
@@ -321,8 +324,22 @@ void test3()
     swf_SaveSWF(&swf, "test.swf");
 }
 
+void rotate90(gfxpoly_t*poly)
+{
+    edge_t*e = poly->edges;
+    while(e) {
+       point_t a = e->a;
+       point_t b = e->b;
+       e->a.x = a.y;
+       e->a.y = a.x;
+       e->b.x = b.y;
+       e->b.y = b.x;
+       e = e->next;
+    }
+}
+
 #include <dirent.h>
-void test4()
+void test4(int argn, char*argv[])
 {
     char*dir = "ps";
     DIR*_dir = opendir(dir);
@@ -335,32 +352,55 @@ void test4()
         if(!strstr(file->d_name, ".ps")) 
             continue;
 
-        char* filename = allocprintf("%s/%s", dir, file->d_name);
+        char* filename;
+
+        if(argn<2)
+            filename = allocprintf("%s/%s", dir, file->d_name);
+        else
+            filename = argv[1];
+
         windrule_t*rule = &windrule_evenodd;
-        gfxpoly_t*poly = gfxpoly_from_file(filename, 0.01);
-        free(filename);
+        gfxpoly_t*poly = gfxpoly_from_file(filename, 1.0);//0.01);
+
+        if(argn!=2)
+            free(filename);
 
         double zoom = 1.0;
-        intbbox_t bbox = intbbox_from_polygon(poly, zoom);
 
         if(!gfxpoly_check(poly)) {
             printf("bad polygon\n");
             continue;
         }
 
-        gfxpoly_t*poly2 = gfxpoly_process(poly, rule);
-        unsigned char*bitmap1 = render_polygon(poly, &bbox, zoom, rule);
-        unsigned char*bitmap2 = render_polygon(poly2, &bbox, zoom, &windrule_evenodd);
-        if(!bitmap_ok(&bbox, bitmap1) || !bitmap_ok(&bbox, bitmap2)) {
-            save_two_bitmaps(&bbox, bitmap1, bitmap2, "error.png");
-            assert(!"error in bitmaps");
-        }
-        if(!compare_bitmaps(&bbox, bitmap1, bitmap2)) {
-            save_two_bitmaps(&bbox, bitmap1, bitmap2, "error.png");
-            assert(!"bitmaps don't match");
-        }
+        gfxpoly_t*poly2 = gfxpoly_process(poly, rule, &onepolygon);
+
+       int pass;
+       for(pass=0;pass<2;pass++) {
+           intbbox_t bbox = intbbox_from_polygon(poly, zoom);
+           unsigned char*bitmap1 = render_polygon(poly, &bbox, zoom, rule, &onepolygon);
+           unsigned char*bitmap2 = render_polygon(poly2, &bbox, zoom, &windrule_evenodd, &onepolygon);
+           if(!bitmap_ok(&bbox, bitmap1) || !bitmap_ok(&bbox, bitmap2)) {
+               save_two_bitmaps(&bbox, bitmap1, bitmap2, "error.png");
+               assert(!"error in bitmaps");
+           }
+           if(!compare_bitmaps(&bbox, bitmap1, bitmap2)) {
+               save_two_bitmaps(&bbox, bitmap1, bitmap2, "error.png");
+               assert(!"bitmaps don't match");
+           }
+           free(bitmap1);
+           free(bitmap2);
+           
+           // second pass renders the 90° rotated version
+           rotate90(poly);
+           rotate90(poly2);
+       }
+
+        gfxpoly_destroy(poly);
         gfxpoly_destroy(poly2);
+        if(argn==2) 
+            break;
     }
+    closedir(_dir);
 }
 
 #include "../gfxdevice.h"
@@ -369,7 +409,12 @@ void test4()
 void extract_polygons_fill(gfxdevice_t*dev, gfxline_t*line, gfxcolor_t*color) 
 {
     gfxpoly_t*poly = gfxpoly_from_gfxline(line, 0.05);
-    printf("%d segments\n", gfxpoly_size(poly));
+    if(gfxpoly_size(poly)>100000) {
+       printf("%d segments (skipping)\n", gfxpoly_size(poly));
+       return;
+    } else {
+       printf("%d segments\n", gfxpoly_size(poly));
+    }
 
     if(!gfxpoly_check(poly)) {
         gfxpoly_destroy(poly);
@@ -378,16 +423,16 @@ void extract_polygons_fill(gfxdevice_t*dev, gfxline_t*line, gfxcolor_t*color)
     }
 
     windrule_t*rule = &windrule_evenodd;
-    gfxpoly_t*poly2 = gfxpoly_process(poly, rule);
         
     double zoom = 1.0;
     intbbox_t bbox = intbbox_from_polygon(poly, zoom);
-    unsigned char*bitmap1 = render_polygon(poly, &bbox, zoom, rule);
-    unsigned char*bitmap2 = render_polygon(poly2, &bbox, zoom, &windrule_evenodd);
+    unsigned char*bitmap1 = render_polygon(poly, &bbox, zoom, rule, &onepolygon);
     if(!bitmap_ok(&bbox, bitmap1)) {
         printf("bad polygon or error in renderer\n");
         return;
     }
+    gfxpoly_t*poly2 = gfxpoly_process(poly, rule, &onepolygon);
+    unsigned char*bitmap2 = render_polygon(poly2, &bbox, zoom, &windrule_evenodd, &onepolygon);
     if(!bitmap_ok(&bbox, bitmap2)) {
         save_two_bitmaps(&bbox, bitmap1, bitmap2, "error.png");
         assert(!"error in bitmap");
@@ -396,6 +441,8 @@ void extract_polygons_fill(gfxdevice_t*dev, gfxline_t*line, gfxcolor_t*color)
         save_two_bitmaps(&bbox, bitmap1, bitmap2, "error.png");
         assert(!"bitmaps don't match");
     }
+    free(bitmap1);
+    free(bitmap2);
 
     gfxpoly_destroy(poly);
     gfxpoly_destroy(poly2);
@@ -456,8 +503,9 @@ finish: 0,
 internal: 0
 };
 
-void test5()
+void test5(int argn, char*argv[])
 {
+    gfxsource_t*driver = gfxsource_pdf_create();
     char*dir = "pdfs";
     DIR*_dir = opendir(dir);
     if(!_dir) return;
@@ -470,7 +518,6 @@ void test5()
             continue;
         char* filename = allocprintf("%s/%s", dir, file->d_name);
 
-        gfxsource_t*driver = gfxsource_pdf_create();
         gfxdocument_t*doc = driver->open(driver, filename);
         gfxdevice_t*out = &extract_polygons;
         int t;
@@ -479,13 +526,15 @@ void test5()
             gfxpage_t* page = doc->getpage(doc, t);
             page->render(page, out);
             page->destroy(page);
-            break;
         }
+        doc->destroy(doc);
         free(filename);
     }
+    closedir(_dir);
+    driver->destroy(driver);
 }
 
-int main()
+int main(int argn, char*argv[])
 {
-    test0();
+    test3(argn, argv);
 }