From 4d64e4cd434426234a5c313c151cd79b6afc299e Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Juha=20Vehvil=C3=A4inen?= <jusu@users.sourceforge.net>
Date: Sat, 6 Jul 2002 17:50:18 +0000
Subject: *** empty log message ***

svn path=/trunk/Framestein/; revision=27
---
 Plugins/xbend.c | 99 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 99 insertions(+)
 create mode 100644 Plugins/xbend.c

(limited to 'Plugins/xbend.c')

diff --git a/Plugins/xbend.c b/Plugins/xbend.c
new file mode 100644
index 0000000..1ba9959
--- /dev/null
+++ b/Plugins/xbend.c
@@ -0,0 +1,99 @@
+#include <stdlib.h>
+#include <string.h>
+#include "plugin.h"
+
+void perform_effect(_frame f, _args a)
+{
+	byte pixelsize = f.pixelformat/8;
+	int x, y, pos, pos2, widthminuspos, widthminuspos2;
+	pixel8 *p, *tp=0;
+	char *t;
+
+	if(!a.s) return;
+
+	pos = atoi(a.s);
+	if(t = strstr(a.s, " "))
+	{
+		pos2 = atoi(t+1);
+		tp = (pixel8 *)malloc(f.width*pixelsize);
+	}
+
+	if(pos<0) pos=0;
+	if(pos>=f.width) pos=f.width-1;
+	if(pos2<0) pos2=0;
+	if(pos2>=f.width) pos2=f.width-1;
+
+	widthminuspos = f.width-pos;
+	widthminuspos2 = f.width-pos2;
+
+	for(y=0; y<f.height; y++)
+	{
+		p = scanline(f, y);
+		for(x=0; x<f.width; x++)
+		{
+			if(!tp)
+//				p[x] = x<pos||pos-(x-pos)<0 ? p[x] : p[pos-(x-pos)];
+				memcpy(&p[x*pixelsize],
+				 x<pos||pos-(x-pos)<0 ? &p[x*pixelsize] : &p[(pos-(x-pos))*pixelsize],
+				 pixelsize);
+			else
+			{
+				memcpy(&tp[x*pixelsize],
+				 &p[x<pos ? ((int)(x/(float)pos*pos2))*pixelsize
+				 : (pos2+(int)(((x-pos)/(float)widthminuspos*widthminuspos2)))*pixelsize],
+				 pixelsize);
+			}
+		}
+		if(tp) memcpy(p, tp, f.width*pixelsize);
+	}
+	if(tp) free(tp);
+}
+
+void perform_copy(_frame f1, _frame f2, _args a)
+{
+	byte pixelsize = f1.pixelformat/8;
+	int x, y, w, h, pos, pos2, widthminuspos, widthminuspos2, widthminusone;
+	pixel8 *p1, *p2, tp=0;
+	char *t;
+
+	if(!a.s) return;
+
+	pos = atoi(a.s);
+	if(t = strstr(a.s, " "))
+	{
+		pos2 = atoi(t+1);
+		tp = 1;
+	}
+
+	w = f1.width<f2.width ? f1.width : f2.width;
+	h = f1.height<f2.height ? f1.height : f2.height;
+
+	if(pos<0) pos=0;
+	if(pos>=w) pos=w-1;
+	if(pos2<0) pos2=0;
+	if(pos2>=w) pos2=w-1;
+
+	widthminuspos = f1.width-pos;
+	widthminuspos2 = f1.width-pos2;
+	widthminusone = w-1;
+
+	for(y=0; y<h; y++)
+	{
+		p1 = scanline(f1, y);
+		p2 = scanline(f2, y);
+		for(x=0; x<w; x++)
+		{
+			if(!tp)
+				memcpy(&p2[x*pixelsize],
+				 x<pos||pos-(x-pos)<0 ? &p1[x*pixelsize] : &p1[(pos-(x-pos))*pixelsize],
+				 pixelsize);
+			else
+			{
+				memcpy(&p2[x*pixelsize],
+				 &p1[ x<pos ? ((int)(x/(float)pos*pos2))*pixelsize
+				 : (pos2+(int)(((x-pos)/(float)widthminuspos*widthminuspos2)))*pixelsize],
+				 pixelsize);
+			}
+		}
+	}
+}
-- 
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