PeRColate

svn path=/trunk/Framestein/; revision=31

1 files changed, 97 insertions, 0 deletions

diff --git a/Plugins/rgbseek.c b/Plugins/rgbseek.c
new file mode 100644
index 0000000..cf53aa5
--- /dev/null
+++ b/Plugins/rgbseek.c
@@ -0,0 +1,97 @@
+// 242.rgbseek -- does binary color recognition on an input image.
+//		by r. luke dubois (luke@music.columbia.edu),
+//			computer music center, columbia university, 2001.
+//
+//  Pd / Framestein port by Olaf Matthes <olaf.matthes@gmx.de>, June 2002
+//
+//	objects and source are provided without warranty of any kind, express or implied.
+//
+//  usage: rgbseek <red> <green> <blue> <fuzzi red> <fuzzi green> <fuzzi blue>
+//
+//  return: 1 if color exists in frame, 0 if not
+//
+
+#include <stdio.h>
+#include <string.h>
+#include "plugin.h"
+
+void perform_effect(struct frame f, struct args a)
+{
+	int x,y;
+	byte red = 0, green = 0, blue = 0, check = 0, rf = 0, gf = 0, bf = 0;
+	byte bits = f.pixelformat/8;
+	byte redpix, greenpix, bluepix;	// the color values
+	pixel16 c16;
+	pixel24 c24;
+	pixel32 c32;
+	char *ret_check;                // returns the result
+	char *t;
+
+	// get r g b and fuzzi params
+	if(!a.s) return;
+	red = atoi(a.s);
+	if(!(t = strstr(a.s, " "))) return;
+	green = atoi(t+1);
+	if(!(t = strstr(t+1, " "))) return;
+	blue = atoi(t+1);
+	if(!(t = strstr(t+1, " "))) return;
+	rf = atoi(t+1);
+	if(!(t = strstr(t+1, " "))) return;
+	gf = atoi(t+1);
+	if(!(t = strstr(t+1, " "))) return;
+	bf = atoi(t+1);
+
+	printf("rgbseek: %d %d %d\n", red, green, blue);
+
+	// get returnvaluereceivenames
+	if(!(t = strstr(t+1, " "))) return;
+	ret_check = t+1;
+	t[0]=0;
+
+	for(y = 0; y < f.height; y++) 
+	{
+		for(x = 0; x < f.width; x++)
+		{
+			switch (f.pixelformat)
+			{
+				case 16:
+					c16 = scanline16(f, y)[x];
+					redpix = r16(c16);
+					greenpix = g16(c16);
+					bluepix = b16(c16);
+					break;
+				case 24:
+					c24 = scanline24(f, y)[x];
+					redpix = r24(c24);
+					greenpix = g24(c24);
+					bluepix = b24(c24);
+					break;
+				case 32:
+					c32 = scanline32(f, y)[x];
+					redpix = r32(c32);
+					greenpix = g32(c32);
+					bluepix = b32(c32);
+					break;
+			}
+			if ((redpix>=(red-rf))&&(redpix<=(red+rf))&&(greenpix>=(green-gf))&&(greenpix<=(green+gf))&&(bluepix>=(blue-bf))&&(bluepix<=(blue+bf)))
+			{
+				check = 1; // found the color, let's get outta here
+				goto done;
+			}        
+		}
+	}
+	check = 0; // didn't find the color
+
+done: 
+	// return-values:
+	//
+	// framestein will send data given in the form "pd_receiver_name=value"
+	// back to pd.
+
+	sprintf(a.ret, "%s=%d", ret_check, check);
+}
+
+void perform_copy(struct frame f1, struct frame f2, struct args a)
+{
+	printf("Using rgbseek as copy operation does nothing!\n");
+}