* Very ugly ee_blit function. Will be polished in a while.

git-svn-id: file:///srv/caca.zoy.org/var/lib/svn/ttyvaders/trunk@184 92316355-f0b4-4df1-b90c-862c8a59935f

libee/Makefile.am

@@ -15,5 +15,6 @@ libee_a_SOURCES = \
 	conic.c \
 	triangle.c \
 	sprite.c \
+	blit.c \
 	$(NULL)
 

libee/blit.c

@@ -0,0 +1,102 @@
+/*
+ *   libee         ASCII-Art library
+ *   Copyright (c) 2002, 2003 Sam Hocevar <sam@zoy.org>
+ *                 All Rights Reserved
+ *
+ *   $Id$
+ *
+ *   This program is free software; you can redistribute it and/or modify
+ *   it under the terms of the GNU General Public License as published by
+ *   the Free Software Foundation; either version 2 of the License, or
+ *   (at your option) any later version.
+ *
+ *   This program is distributed in the hope that it will be useful,
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *   GNU General Public License for more details.
+ *
+ *   You should have received a copy of the GNU General Public License
+ *   along with this program; if not, write to the Free Software
+ *   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include "config.h"
+
+#ifdef HAVE_INTTYPES_H
+#   include <inttypes.h>
+#else
+typedef unsigned char uint8_t;
+#endif
+
+#include <stdlib.h>
+
+#include "ee.h"
+#include "ee_internals.h"
+
+#include <stdio.h>
+void ee_blit(int x1, int y1, int x2, int y2, void *pixels, int w, int h)
+{
+    char foo[] = { ' ', '.', ':', ';', '=', '$', '%', '@', '#', '8', 'W' };
+    int x, y, pitch;
+
+    if(x1 > x2)
+    {
+        int tmp = x2; x2 = x1; x1 = tmp;
+    }
+
+    if(y1 > y2)
+    {
+        int tmp = y2; y2 = y1; y1 = tmp;
+    }
+
+    pitch = (3 * w + 3) / 4 * 4;
+
+    for(y = y1 > 0 ? y1 : 0; y <= y2 && y <= ee_get_height(); y++)
+        for(x = x1 > 0 ? x1 : 0; x <= x2 && x <= ee_get_width(); x++)
+        {
+            int fromx = w * (x - x1) / (x2 - x1 + 1);
+            int fromy = h * (y - y1) / (y2 - y1 + 1);
+            int r = ((unsigned char *)pixels)[3 * fromx + pitch * fromy];
+            int g = ((unsigned char *)pixels)[3 * fromx + 1 + pitch * fromy];
+            int b = ((unsigned char *)pixels)[3 * fromx + 2 + pitch * fromy];
+
+            if(r == g && g == b)
+            {
+                ee_set_color(EE_LIGHTGRAY);
+            }
+            else
+            {
+                static int foo_colors[6] = {EE_LIGHTRED, EE_YELLOW, EE_LIGHTGREEN, EE_LIGHTCYAN, EE_LIGHTBLUE, EE_LIGHTMAGENTA};
+                float min = r, max = r, delta, hue, sat;
+                if(min > g) min = g; if(max < g) max = g;
+                if(min > b) min = b; if(max < b) max = b;
+
+                delta = max - min;
+
+		sat = max / delta;
+
+                if(delta > 20)
+                {
+                    if( r == max )
+                        hue = (g - b) / delta; // between yellow & magenta
+                    else if( g == max )
+                        hue = 2 + (b - r) / delta; // between cyan & yellow
+                    else
+                        hue = 4 + (r - g) / delta; // between magenta & cyan
+
+                    hue *= 60; // degrees
+                    if( hue < 0 )
+                        hue += 360;
+
+                    ee_set_color(foo_colors[(int)(hue + 30) / 60]);
+                }
+                else
+                {
+                    ee_set_color(EE_LIGHTGRAY);
+                }
+            }
+
+            ee_putchar(x, y, foo[(r + g + b) / 3 / 25]);
+        }
+}
+

libee/ee.h

@@ -107,6 +107,8 @@ int ee_get_sprite_dy(struct ee_sprite *, int);
 void ee_draw_sprite(int, int, struct ee_sprite *, int);
 void ee_free_sprite(struct ee_sprite *);
 
+void ee_blit(int, int, int, int, void *, int, int);
+
 #ifdef __cplusplus
 }
 #endif

test/Makefile.am

@@ -15,6 +15,8 @@ bin_PROGRAMS = demo spritedit
 
 demo_SOURCES = demo.c
 demo_LDADD = ../libee/libee.a $(LDFLAGS_slang) $(LDFLAGS_ncurses) -lm
+demo_CFLAGS = `pkg-config --cflags gtk+-2.0`
+demo_LDFLAGS = `pkg-config --libs gtk+-2.0`
 
 spritedit_SOURCES = spritedit.c
 spritedit_LDADD = ../libee/libee.a $(LDFLAGS_slang) $(LDFLAGS_ncurses) -lm

test/demo.c

@@ -26,6 +26,9 @@
 #include <string.h>
 #include <stdio.h>
 
+#include <gdk/gdk.h>
+#include <gdk/gdkpixbuf.h>
+
 #include "ee.h"
 
 static void display_menu(void);
@@ -39,11 +42,16 @@ static void demo_boxes(void);
 static void demo_ellipses(void);
 static void demo_triangles(void);
 static void demo_sprites(void);
+static void demo_blit(void);
 
 int bounds = 0;
 int outline = 0;
 struct ee_sprite *sprite = NULL;
 
+GdkPixbuf *pixbuf;
+char *pixels;
+int bufx, bufy, bufpitch;
+
 int main(int argc, char **argv)
 {
     void (*demo)(void) = NULL;
@@ -59,6 +67,19 @@ int main(int argc, char **argv)
     /* Initialize data */
     sprite = ee_load_sprite("data/barboss.txt");
 
+gdk_init (&argc, &argv);
+    //pixbuf = gdk_pixbuf_new_from_file("/home/sam/pix/gally4.jpeg", NULL);
+    //pixbuf = gdk_pixbuf_new_from_file("/home/sam/pix/badge1.jpeg", NULL);
+    //pixbuf = gdk_pixbuf_new_from_file("/home/sam/pix/union.png", NULL);
+    pixbuf = gdk_pixbuf_new_from_file("/home/sam/pix/pikachu.jpeg", NULL);
+if(!pixbuf) return -2;
+    pixels = gdk_pixbuf_get_pixels(pixbuf);
+    bufx = gdk_pixbuf_get_width(pixbuf);
+    bufy = gdk_pixbuf_get_height(pixbuf);
+    bufpitch = gdk_pixbuf_get_rowstride(pixbuf);
+fprintf(stderr, "bits: %i\n", gdk_pixbuf_get_bits_per_sample(pixbuf));
+fprintf(stderr, "w %i, h %i, stride %i\n", bufx, bufy, bufpitch);
+
     /* Main menu */
     display_menu();
     ee_refresh();
@@ -120,6 +141,10 @@ int main(int argc, char **argv)
             case 'S':
                 demo = demo_sprites;
                 break;
+            case 'i':
+            case 'I':
+                demo = demo_blit;
+                break;
             }
 
             if(demo)
@@ -173,11 +198,12 @@ static void display_menu(void)
     ee_putstr(4, 12, "'5': ellipses");
     ee_putstr(4, 13, "'s': sprites");
     ee_putstr(4, 14, "'c': color");
+    ee_putstr(4, 15, "'i': image blit");
 
-    ee_putstr(4, 16, "settings:");
-    ee_printf(4, 17, "'o': outline: %s",
+    ee_putstr(4, 17, "settings:");
+    ee_printf(4, 18, "'o': outline: %s",
               outline == 0 ? "none" : outline == 1 ? "solid" : "thin");
-    ee_printf(4, 18, "'b': drawing boundaries: %s",
+    ee_printf(4, 19, "'b': drawing boundaries: %s",
               bounds == 0 ? "screen" : "infinite");
 
     ee_putstr(4, yo - 2, "'q': quit");
@@ -428,3 +454,9 @@ static void demo_sprites(void)
                    ee_rand(0, ee_get_height() - 1), sprite, 0);
 }
 
+static void demo_blit(void)
+{
+ee_set_color(EE_LIGHTGRAY);
+    ee_blit(6, 4, ee_get_width() - 6, ee_get_height() - 4, pixels, bufx, bufy);
+}
+