Add a glow effect, and an effect that linearly mixes two sources (because glow needed...

[movit] / glow_effect.cpp

diff --git a/glow_effect.cpp b/glow_effect.cpp
new file mode 100644 (file)
index 0000000..e4c9a42
--- /dev/null
+++ b/glow_effect.cpp
@@ -0,0 +1,33 @@
+#include <math.h>
+#include <assert.h>
+
+#include "glow_effect.h"
+#include "blur_effect.h"
+#include "mix_effect.h"
+#include "effect_chain.h"
+#include "util.h"
+
+GlowEffect::GlowEffect()
+       : blur(new BlurEffect),
+         mix(new MixEffect)
+{
+       mix->set_float("strength_first", 1.0f);
+       mix->set_float("strength_second", 0.3f);
+}
+
+void GlowEffect::add_self_to_effect_chain(EffectChain *chain, const std::vector<Effect *> &inputs) {
+       assert(inputs.size() == 1);
+       blur->add_self_to_effect_chain(chain, inputs);
+
+       std::vector<Effect *> mix_inputs;
+       mix_inputs.push_back(inputs[0]);
+       mix_inputs.push_back(chain->last_added_effect());  // FIXME
+       mix->add_self_to_effect_chain(chain, mix_inputs);
+}
+
+bool GlowEffect::set_float(const std::string &key, float value) {
+       if (key == "blurred_mix_amount") {
+               return mix->set_float("strength_second", value);
+       }
+       return blur->set_float(key, value);
+}