1 files changed, 62 insertions, 0 deletions
diff --git a/Plugins/swap.cpp b/Plugins/swap.cpp
new file mode 100644
index 0000000..d1389f4
--- /dev/null
+++ b/Plugins/swap.cpp
@@ -0,0 +1,62 @@
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include "plugin.h"
+#include "pixels.h"
+
+// swap selected area on two images
+// args: swap sourcex1 sourcey1 sourcex2 sourcey2 destx desty
+// (the selection is of equal size on both images)
+
+void swapint(int *a, int *b)
+{
+	int i = *b;
+	*b = *a;
+	*a = i;
+}
+
+void perform_copy(_frame f1, _frame f2, _args a)
+{
+	if(!a.s) return;
+
+	// get args
+	int sx1, sy1, sx2, sy2, dx1, dy1;
+	char *t;
+
+	sx1 = atoi(a.s);
+	if(!(t = strstr(a.s, " "))) return;
+	sy1 = atoi(t);
+	if(!(t = strstr(t+1, " "))) return;
+	sx2 = atoi(t);
+	if(!(t = strstr(t+1, " "))) return;
+	sy2 = atoi(t);
+	if(!(t = strstr(t+1, " "))) return;
+	dx1 = atoi(t);
+	if(!(t = strstr(t+1, " "))) return;
+	dy1 = atoi(t);
+
+	if(sx1>sx2) swapint(&sx1, &sx2);
+	if(sy1>sy2) swapint(&sy1, &sy2);
+
+printf("swap: %d %d %d %d - %d %d\n", sx1, sy1, sx2, sy2, dx1, dy1);
+
+	int x, y, i, o;
+	pixel16 c16;
+	pixels p1(f1), p2(f2);
+
+	for(y=sy1; y<=sy2; y++)
+		for(x=sx1; x<=sx2; x++)
+		{
+			if(x>=f1.width || y>=f1.height) continue;
+			i = dx1+(x-sx1);
+			o = dy1+(y-sy1);
+			if(i>=f2.width || o>=f2.height) continue;
+
+			p1.moveto(x, y);
+			p2.moveto(i, o);
+
+			c16 = p2.dot16();
+			p2.dot16(p1.dot16());
+			p1.dot16(c16);
+		}
+}