bunch of stuff that added proper flatten, then broke stuff again trying to make it use libhashtable

6 files changed, 150 insertions, 47 deletions

diff --git a/Makefile b/Makefile
index 3b9f51a..131f46a 100644
--- a/Makefile
+++ b/Makefile
@@ -1,11 +1,9 @@
+PREFIX:=/usr/local
+
 all: hackvr hackvr_term
 
 .PHONY: hackvr hackvr_term clean install uninstall all
 
-ifeq ($(PREFIX),)
-$(error the PREFIX variable is NOT set)
-endif
-
 hackvr:
 	$(MAKE) -C src all
 
diff --git a/src/Makefile b/src/Makefile
index f43ceb3..4b31ed5 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -2,7 +2,7 @@
 
 PREFIX:=/usr/local/
 
-CFLAGS=-Wall -pedantic -std=c99 -DGRAPHICAL -ffast-math -I$(PREFIX)/include
+CFLAGS+=-Wall -pedantic -std=c99 -DGRAPHICAL -ffast-math -I$(PREFIX)/include
 LDFLAGS=-L$(PREFIX)/lib
 
 #all: hackvr_headless hackvr_x11 hackvr_opengl slowcat ### when hackvr_opengl gets useful at all I'll start including it in default build.
@@ -12,59 +12,60 @@ all: hackvr_headless hackvr_x11 slowcat nonblocktail
 nonblocktail: LDLIBS=-lidc
 nonblocktail: nonblocktail.c
 
-hackvr_headless: LDLIBS=-lm -lidc
+hackvr_headless: LDLIBS=-lm -lidc -lhashtable
 hackvr_headless: hackvr_headless.o math.o physics.o
 
-hackvr_x11: LDLIBS=-lm -lidc -lX11
+hackvr_x11: LDLIBS=-lm -lidc -lX11 -lhashtable
 hackvr_x11: hackvr_x11.o graphics_c3.o graphics_c2.o graphics_cs_x11.o math.o physics.o keyboard.o mouse_x11.o keyboard_x11.o input.o
 #notice how all the targets have generic graphics objects up until a specific one.
 
-hackvr_fb: LDLIBS=-lm -lidc
+hackvr_fb: LDLIBS=-lm -lidc -lhashtable
 hackvr_fb: hackvr_fb.o graphics_c3.o graphics_c2.o graphics_cs_fb.o math.o physics.o keyboard_die.o keyboard.o mouse_die.o
 
-hackvr_opengl: LDLIBS=-lm -lidc -lGL -lGLU -lglut
+hackvr_opengl: LDLIBS=-lm -lidc -lGL -lGLU -lglut -lhashtable
 hackvr_opengl: hackvr_opengl.o graphics_c3.o graphics_c2_opengl.o graphics_cs_opengl.o math.o physics.o
 
-hackvr_freeglut: LDLIBS=-lm -lidc -lGL -lGLU -lglut
+hackvr_freeglut: LDLIBS=-lm -lidc -lGL -lGLU -lglut -lhashtable
 hackvr_freeglut: hackvr_freeglut.o graphics_c3_freeglut.o math.o physics.o keyboard.o mouse_die.o keyboard_die.o
 
-hackvr_freeglut.o: LDLIBS=-lm -lidc -lGL -lGLU -lglut
+hackvr_freeglut.o: LDLIBS=-lm -lidc -lGL -lGLU -lglut -lhashtable
 hackvr_freeglut.o: CFLAGS+='-DHVR_VERSION="freeglut"'
 
 hackvr_fb.o: CFLAGS+='-DHVR_VERSION="framebuffer"'
 
-graphics_c3_freeglut.o: LDLIBS=-lm -lidc -lGL -lGLU -lglut
+graphics_c3_freeglut.o: LDLIBS=-lm -lidc -lGL -lGLU -lglut -lhashtable
 
-hackvr_opengl.o: LDLIBS=-lm -lidc -lGL -lGLU -lglut
+hackvr_opengl.o: LDLIBS=-lm -lidc -lGL -lGLU -lglut -lhashtable
 hackvr_opengl.o: CFLAGS+='-DHVR_VERSION="opengl"'
 
-hackvr_x11.o: LDLIBS=-lm -lidc -lX11
+hackvr_x11.o: LDLIBS=-lm -lidc -lX11 -lhashtable
 hackvr_x11.o: CFLAGS+='-DHVR_VERSION="x11"'
 
 hackvr_headless.o: CFLAGS=-Wall -pedantic -std=c99 -ffast-math -I$(PREFIX)/include
 hackvr_headless.o: CFLAGS+='-DHVR_VERSION="headless"'
-hackvr_headless.o: LDLIBS=-lm -lidc
+hackvr_headless.o: LDLIBS=-lm -lidc -lhashtable
 
-graphics_c3.o: LDLIBS=-lm -lidc
-graphics_c2.o: LDLIBS=-lm -lidc
+graphics_c3.o: LDLIBS=-lm -lidc -lhashtable
+graphics_c2.o: LDLIBS=-lm -lidc -lhashtable
 
-physics.o: LDLIBS=-lm -lidc
+physics.o: LDLIBS=-lm -lidc -lhashtable
 
-keyboard.o: LDLIBS=-lm -lidc
+keyboard.o: LDLIBS=-lm -lidc -lhashtable
 
-input.o: LDLIBS=-lm -lidc
+input.o: LDLIBS=-lm -lidc -lhashtable
 
-graphics_cs_x11.o: LDLIBS=-lm -lidc -lX11
-mouse_x11.o:LDLIBS=-lX11
-keyboard_x11.o:LDLIBS=-lX11
+graphics_cs_x11.o: LDLIBS=-lm -lidc -lX11 -lhashtable
+mouse_x11.o:LDLIBS=-lX11 -lhashtable
+keyboard_x11.o:LDLIBS=-lX11 -lhashtable
 
-graphics_c2_opengl.o: LDLIBS=-lm -lidc -lGL -lGLU -lglut
-graphics_cs_opengl.o: LDLIBS=-lm -lidc -lGL -lGLU -lglut
-math.o: LDLIBS=-lm -lidc
+graphics_c2_opengl.o: LDLIBS=-lm -lidc -lGL -lGLU -lglut -lhashtable
+graphics_cs_opengl.o: LDLIBS=-lm -lidc -lGL -lGLU -lglut -lhashtable
+math.o: LDLIBS=-lm -lidc -lhashtable
 
 install: all
 	mkdir -p $(PREFIX)/bin
 	install hackvr $(PREFIX)/bin/hackvr
+	install -t $(PREFIX)/bin hackvr_uri
 	install hackvr_headless $(PREFIX)/bin/hackvr_headless
 	install hackvr_x11 $(PREFIX)/bin/hackvr_x11
 	install slowcat $(PREFIX)/bin/slowcat
diff --git a/src/common.h b/src/common.h
index b5054a7..a555cb1 100644
--- a/src/common.h
+++ b/src/common.h
@@ -6,6 +6,8 @@
 #ifndef _HACKVR_COMMON_H_
 #define _HACKVR_COMMON_H_
 
+#include <hashtable.h>
+
 #define TOP     240.0
 #define BOTTOM  -240.0
 #define RIGHT   320.0
@@ -110,6 +112,7 @@ struct hvr_global {
   struct c3_shape *shape[SHAPES];
   int shapes;
   c3_group_rot_t *group_rot[SHAPES];//there can be less of these.
+  struct hashtable ht_group;
   c3_group_rot_t camera;
   real zoom;
   int derp;
diff --git a/src/graphics_cs_x11.c b/src/graphics_cs_x11.c
index be008bf..f58600b 100644
--- a/src/graphics_cs_x11.c
+++ b/src/graphics_cs_x11.c
@@ -86,7 +86,7 @@ void draw_cs_text(cs_t p,char *text) {
 
 void draw_cs_shape(cs_s_t s) {//this is implemented as draw_cs_line... hrm. it could be moved up to graphics.c? probl no.
   //test in here whether a mouse click is within this shape's... bounding box? sure.
-  cs_s_t bb;//bounding box
+  //cs_s_t bb;//bounding box
   cs_t smouse=c2_to_cs(gra_global.mouse);
   int minx=s.p[0].x;
   int miny=s.p[0].y;
@@ -115,26 +115,30 @@ void draw_cs_shape(cs_s_t s) {//this is implemented as draw_cs_line... hrm. it c
       maxy=(s.p[i].y>maxy)?s.p[i].y:maxy;
       draw_cs_line(s.p[i],s.p[(i+1)%(s.len+(s.len==1))]);
     }
+    //fix the comparison here and also fix the hilighting shape
     if(smouse.x >= minx && //gra_global is a c2_t and these are in cs_t
-         smouse.y >= miny &&
-         smouse.x <= maxx &&
-         smouse.y <= maxy) {
-      if(gra_global.mousemap[0]==-1) {//if we're inside the bounding box let's make SOMETHING happen.
-        gra_global.mousemap[0]=0;
-        printf("%s action %s\n",global.user,s.id);
+       smouse.y >= miny &&
+       smouse.x <= maxx &&
+       smouse.y <= maxy) {
+//      if(wn_PnPoly(smouse,s.p,s.len) != 0 && s.len > 2) {
+        if(gra_global.mousemap[0] == -1) {//if we're inside the bounding box let's make SOMETHING happen.
+          gra_global.mousemap[0]=0;
+          printf("%s action %s\n",global.user,s.id);
+//        }
+/*        bb.id=strdup("boundingbox");
+        bb.len=4;
+        bb.p[0].x=minx;
+        bb.p[0].y=miny;
+        bb.p[1].x=minx;
+        bb.p[1].y=maxy;
+        bb.p[2].x=maxx;
+        bb.p[2].y=maxy;
+        bb.p[3].x=maxx;
+        bb.p[3].y=miny;
+        draw_cs_filled_shape(bb);
+        free(bb.id);
+*/
       }
-      bb.id=strdup("boundingbox");
-      bb.len=4;
-      bb.p[0].x=minx;
-      bb.p[0].y=miny;
-      bb.p[1].x=minx;
-      bb.p[1].y=maxy;
-      bb.p[2].x=maxx;
-      bb.p[2].y=maxy;
-      bb.p[3].x=maxx;
-      bb.p[3].y=miny;
-      draw_cs_filled_shape(bb);
-      free(bb.id);
     }
     break;
   }
@@ -505,7 +509,7 @@ int graphics_event_handler(int world_changed) { //should calling draw_screen be
  }
  while(XCheckMaskEvent(x11_global.dpy,HV_GRAPHICS_X11_EVENT_MASK,&e)) {//we should squish all of the window events. they just cause a redraw anyway
    switch(e.type) {
-     case Expose:
+     case Expose: case NoExpose: case MapNotify:
        //if(e.xexpose.count == 0) redraw=1;
        redraw=1;
        break;
@@ -531,7 +535,7 @@ int graphics_event_handler(int world_changed) { //should calling draw_screen be
        break;
 
     default:
-//       fprintf(stderr,"# received unknown event with type: %d\n",e.type);
+      fprintf(stderr,"# received unknown event with type: %d\n",e.type);
       break;
   }
  }
diff --git a/src/math.c b/src/math.c
index d05789d..318465d 100644
--- a/src/math.c
+++ b/src/math.c
@@ -9,8 +9,18 @@ extern struct hvr_global global;
 //might change this to use hashtables for faster lookups.
 c3_group_rot_t *get_group_relative(char *id) {//crashes in here somehwere...
   int i;
+  c3_group_rot_t *gr;
+  struct entry *tmp;
+  if((tmp=ht_getnode(&global.ht_group,id))) {
+    gr=tmp->target;
+    return gr;
+  }//if this didn't work, do fallback...
   for(i=0;global.group_rot[i];i++) {
     if(!strcmp(global.group_rot[i]->id,id)) {//should I use glob here and return an array?
+      if(gr != global.group_rot[i]) {
+        fprintf(stderr,"# %s ? %s ? %s\n",tmp->original,gr->id,global.group_rot[i]->id);
+        fprintf(stderr,"# %16x != %16x. wtf?\n",gr,global.group_rot[i]);
+      }
       return global.group_rot[i];
     }
   }
@@ -135,6 +145,7 @@ c3_s_t apply_group_relative(c3_s_t s,c3_group_rot_t *group_rot) {
   int i;
   s2.len=s.len;
   s2.id=s.id;
+  s2.attrib=s.attrib;
   if(group_rot) {
    gr=group_rot;
   } else {
@@ -183,3 +194,85 @@ c3_t c3_add(c3_t p1,c3_t p2) {
 real distance3(c3_t p1,c3_t p2) {
  return sqrt(( (p1.x-p2.x)*(p1.x-p2.x) )+( (p1.y-p2.y)*(p1.y-p2.y) )+( (p1.z-p2.z)*(p1.z-p2.z) ));
 }
+
+/* epoch copied this from: http://geomalgorithms.com/a03-_inclusion.html */
+/* then edited it to work with hackvr ofc */
+
+// Copyright 2000 softSurfer, 2012 Dan Sunday
+// This code may be freely used and modified for any purpose
+// providing that this copyright notice is included with it.
+// SoftSurfer makes no warranty for this code, and cannot be held
+// liable for any real or imagined damage resulting from its use.
+// Users of this code must verify correctness for their application.
+ 
+
+// a Point is defined by its coordinates {int x, y;}
+//===================================================================
+ 
+
+// isLeft(): tests if a point is Left|On|Right of an infinite line.
+//    Input:  three points P0, P1, and P2
+//    Return: >0 for P2 left of the line through P0 and P1
+//            =0 for P2  on the line
+//            <0 for P2  right of the line
+//    See: Algorithm 1 "Area of Triangles and Polygons"
+inline int
+isLeft( cs_t P0, cs_t P1, cs_t P2 )
+{
+    return ( (P1.x - P0.x) * (P2.y - P0.y)
+            - (P2.x -  P0.x) * (P1.y - P0.y) );
+}
+//===================================================================
+
+
+// cn_PnPoly(): crossing number test for a point in a polygon
+//      Input:   P = a point,
+//               V[] = vertex points of a polygon V[n+1] with V[n]=V[0]
+//      Return:  0 = outside, 1 = inside
+// This code is patterned after [Franklin, 2000]
+int
+cn_PnPoly( cs_t P, cs_t *V, int n )
+{
+    int    cn = 0;    // the  crossing number counter
+
+    // loop through all edges of the polygon
+    for (int i=0; i<n; i++) {    // edge from V[i]  to V[i+1]
+       if (((V[i].y <= P.y) && (V[i+1].y > P.y))     // an upward crossing
+        || ((V[i].y > P.y) && (V[i+1].y <=  P.y))) { // a downward crossing
+            // compute  the actual edge-ray intersect x-coordinate
+            float vt = (float)(P.y  - V[i].y) / (V[i+1].y - V[i].y);
+            if (P.x <  V[i].x + vt * (V[i+1].x - V[i].x)) // P.x < intersect
+                 ++cn;   // a valid crossing of y=P.y right of P.x
+        }
+    }
+    return (cn&1);    // 0 if even (out), and 1 if  odd (in)
+
+}
+//===================================================================
+
+
+// wn_PnPoly(): winding number test for a point in a polygon
+//      Input:   P = a point,
+//               V[] = vertex points of a polygon V[n+1] with V[n]=V[0]
+//      Return:  wn = the winding number (=0 only when P is outside)
+int
+wn_PnPoly( cs_t P, cs_t *V, int n )
+{
+    int    wn = 0;    // the  winding number counter
+
+    // loop through all edges of the polygon
+    for (int i=0; i<(n-1); i++) {   // edge from V[i] to  V[i+1]
+        if (V[i].y <= P.y) {          // start y <= P.y
+            if (V[i+1].y  > P.y)      // an upward crossing
+                 if (isLeft( V[i], V[i+1], P) > 0)  // P left of  edge
+                     ++wn;            // have  a valid up intersect
+        }
+        else {                        // start y > P.y (no test needed)
+            if (V[i+1].y  <= P.y)     // a downward crossing
+                 if (isLeft( V[i], V[i+1], P) < 0)  // P right of  edge
+                     --wn;            // have  a valid down intersect
+        }
+    }
+    return wn;
+}
+//===================================================================
diff --git a/src/math.h b/src/math.h
index 8d058cc..e7b5249 100644
--- a/src/math.h
+++ b/src/math.h
@@ -24,4 +24,8 @@ c3_t c3_add(c3_t p1,c3_t p2);
 real distance3(c3_t p1,c3_t p2);
 void print_point(c3_t p);
 
+int isLeft(cs_t, cs_t, cs_t);
+int cn_PnPoly(cs_t, cs_t *, int);
+int wn_PnPoly(cs_t, cs_t *, int);
+
 #endif