1 files changed, 33 insertions, 0 deletions
diff --git a/Plugins/merge_mod.cpp b/Plugins/merge_mod.cpp
new file mode 100644
index 0000000..1aa9f16
--- /dev/null
+++ b/Plugins/merge_mod.cpp
@@ -0,0 +1,33 @@
+//
+// merge_additive - add color components of two images, mod 255
+//
+
+#include "plugin.h"
+#include "pixels.h"
+
+INFO("add color components of two images, modulus 255");
+
+void perform_copy(_frame f1, _frame f2, _args a)
+{
+	arguments ar(a.s);
+	pixels p1(f1), p2(f2);
+	int r, g, b;
+
+	float f = ar.count()>=1 ? atof(ar[0]) : 1;
+
+	while(!p1.eof() && !p2.eof())
+	{
+		r = (f * p1.red() + p2.red());
+		g = (f * p1.green() + p2.green());
+		b = (f * p1.blue() + p2.blue());
+
+		r = r % 255;
+		g = g % 255;
+		b = b % 255;
+
+		p2.putrgb(r, g, b);
+
+		p1.next();
+		p2.next();
+	}
+}