light clock (#260)

* extend image effects
add a basic light clock

* add alpha values  to rainbow

* some effect tuning

* make seconds hand optional and change color to yellow
make blue hours hand always visible

effects/light-clock.json

@@ -0,0 +1,8 @@
+{
+	"name" : "Light clock",
+	"script" : "light-clock.py",
+	"args" :
+	{
+		"show_seconds" : true
+	}
+}

effects/light-clock.py

@@ -0,0 +1,54 @@
+import hyperion, time, datetime
+
+# Get the parameters
+showSeconds = bool(hyperion.args.get('show_seconds', True))
+centerX     = int(round(hyperion.imageWidth)/2)
+centerY     = int(round(float(hyperion.imageHeight)/2))
+
+colorsSecond = bytearray([
+	0, 255,255,0,255,
+	5, 255,255,0,255,
+	30, 0,0,0,0,
+])
+
+colorsMinute = bytearray([
+	0, 0,255,0,255,
+	5, 0,255,0,250,
+	90, 0,0,0,0,
+	
+])
+
+colorsHour = bytearray([
+	0, 0,0,255,255,
+	10, 0,0,255,255,
+	127, 0,0,196,127,
+	255, 0,0,196,5,
+])
+
+colorsHourTop = bytearray([
+	0, 0,0,255,250,
+	10, 0,0,255,128,
+	20, 0,0,0,0,
+])
+
+# effect loop
+while not hyperion.abort():
+	now = datetime.datetime.now()
+
+	angleH = 449 - 30*(now.hour if now.hour<12 else now.hour-12)
+	angleM = 449 - 6*now.minute
+	angleS = 449 - 6*now.second
+
+	angleH -= 0 if angleH<360 else 360
+	angleM -= 0 if angleM<360 else 360
+	angleS -= 0 if angleS<360 else 360
+
+	hyperion.imageSolidFill(127,127,127);
+	hyperion.imageCanonicalGradient(centerX, centerY, angleH, colorsHour)
+	hyperion.imageCanonicalGradient(centerX, centerY, angleM, colorsMinute)
+	hyperion.imageCanonicalGradient(centerX, centerY, angleH, colorsHourTop)
+	if showSeconds:
+		hyperion.imageCanonicalGradient(centerX, centerY, angleS, colorsSecond)
+
+	hyperion.imageShow()
+	time.sleep(0.01 )

effects/rainbow-swirl.py

@@ -14,15 +14,22 @@ increment = -1 if reverse else 1
 
 # table of stop colors for rainbow gradient, first is the position, next rgb, all values 0-255
 rainbowColors = bytearray([
-	0  ,255,0  ,0,
+	0  ,255,0  ,0, 255,
-	25 ,255,230,0,
+	25 ,255,230,0, 255,
-	63 ,255,255,0,
+	63 ,255,255,0, 255,
-	100,0  ,255,0,
+	100,0  ,255,0, 255,
-	127,0  ,255,200,
+	127,0  ,255,200, 255,
-	159,0  ,255,255,
+	159,0  ,255,255, 255,
-	191,0  ,0  ,255,
+	191,0  ,0  ,255, 255,
-	224,255,0  ,255,
+	224,255,0  ,255, 255,
-	255,255,0  ,127,
+	255,255,0  ,127, 255,
+	#0, 255, 0, 0, 255,
+	#42, 255, 255, 0, 255,
+	#85, 0, 255, 0, 255,
+	#128, 0, 255, 255, 255,
+	#170, 0, 0, 255, 255,
+	#212, 255, 0, 255, 255,
+	#255, 255, 0, 0, 255,
 ])
 
 # effect loop

libsrc/effectengine/Effect.cpp

@@ -27,6 +27,7 @@ PyMethodDef Effect::effectMethods[] = {
 	{"imageShow",    Effect::wrapImageShow,   METH_NOARGS,  "set current effect image to hyperion core."},
 	{"imageCanonicalGradient", Effect::wrapImageCanonicalGradient, METH_VARARGS,  ""},
 	{"imageRadialGradient"   , Effect::wrapImageRadialGradient,    METH_VARARGS,  ""},
+	{"imageSolidFill"   , Effect::wrapImageSolidFill,    METH_VARARGS,  ""},
 // 	{"imageSetPixel",Effect::wrapImageShow,   METH_VARARGS, "set pixel color of image"},
 // 	{"imageGetPixel",Effect::wrapImageShow,   METH_VARARGS, "get pixel color of image"},
 	{NULL, NULL, 0, NULL}
@@ -454,8 +455,9 @@ PyObject* Effect::wrapImageCanonicalGradient(PyObject *self, PyObject *args)
 	{
 		if (PyByteArray_Check(bytearray))
 		{
-			int length = PyByteArray_Size(bytearray);
+			const int length = PyByteArray_Size(bytearray);
-			if (length % 4 == 0)
+			const unsigned arrayItemLength = 5;
+			if (length % arrayItemLength == 0)
 			{
 
 				QPainter * painter = effect->_painter;
@@ -463,25 +465,25 @@ PyObject* Effect::wrapImageCanonicalGradient(PyObject *self, PyObject *args)
 				QConicalGradient gradient(QPoint(centerX,centerY), angle );
 				char * data = PyByteArray_AS_STRING(bytearray);
 
-				for (int idx=0; idx<length; idx+=4)
+				for (int idx=0; idx<length; idx+=arrayItemLength)
 				{
 					gradient.setColorAt(
 						((uint8_t)data[idx])/255.0,
 						QColor(
 							(uint8_t)(data[idx+1]),
 							(uint8_t)(data[idx+2]),
-							(uint8_t)(data[idx+3])
+							(uint8_t)(data[idx+3]),
+							(uint8_t)(data[idx+4])
 					));
 				}
 
-				gradient.setSpread(QGradient::RepeatSpread);
 				painter->fillRect(myQRect, gradient);
 				
 				return Py_BuildValue("");
 			}
 			else
 			{
-				PyErr_SetString(PyExc_RuntimeError, "Length of bytearray argument should multiple of 4");
+				PyErr_SetString(PyExc_RuntimeError, "Length of bytearray argument should multiple of 5");
 				return nullptr;
 			}
 		}
@@ -582,6 +584,49 @@ PyObject* Effect::wrapImageRadialGradient(PyObject *self, PyObject *args)
 	}
 }
 
+PyObject* Effect::wrapImageSolidFill(PyObject *self, PyObject *args)
+{
+	Effect * effect = getEffect();
+
+	int argCount = PyTuple_Size(args);
+	int r, g, b;
+	int a = 255;
+	int startX = 0;
+	int startY = 0;
+	int width  = effect->_imageSize.width();
+	int height = effect->_imageSize.height();
+
+	bool argsOK = false;
+
+	if ( argCount == 8 && PyArg_ParseTuple(args, "iiiiiiii", &startX, &startY, &width, &height, &r, &g, &b, &a) )
+	{
+		argsOK      = true;
+	}
+	if ( argCount == 7 && PyArg_ParseTuple(args, "iiiiiii", &startX, &startY, &width, &height, &r, &g, &b) )
+	{
+		argsOK      = true;
+	}
+	if ( argCount == 4 && PyArg_ParseTuple(args, "iiii",&r, &g, &b, &a) )
+	{
+		argsOK      = true;
+	}
+	if ( argCount == 3 && PyArg_ParseTuple(args, "iii",&r, &g, &b) )
+	{
+		argsOK      = true;
+	}
+
+	if (argsOK)
+	{
+		QRect myQRect(startX,startY,width,height);
+		effect->_painter->fillRect(myQRect, QColor(r,g,b,a));
+		return Py_BuildValue("");
+	}
+	else
+	{
+		return nullptr;
+	}
+}
+
 
 Effect * Effect::getEffect()
 {

libsrc/effectengine/Effect.h

@@ -58,6 +58,7 @@ private:
 	static PyObject* wrapImageShow(PyObject *self, PyObject *args);
 	static PyObject* wrapImageCanonicalGradient(PyObject *self, PyObject *args);
 	static PyObject* wrapImageRadialGradient(PyObject *self, PyObject *args);
+	static PyObject* wrapImageSolidFill(PyObject *self, PyObject *args);
 
 	static Effect * getEffect();