From a821b22cad5649d88622ccb8eabf1400396e7bb8 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Rapha=C3=ABl=20Vinot?= <raphael@vinot.info>
Date: Tue, 3 Mar 2015 01:12:31 +0100
Subject: [PATCH] add python example. Partially working.

---
 .../processing/pic2serialpy/pic2serialpy.pyde |  95 ++++++++++++++++++
 .../processing/pic2serialpy/sketch.properties |   2 +
 v2/backend/processing/pic2serialpy/test1.png  | Bin 0 -> 170 bytes
 3 files changed, 97 insertions(+)
 create mode 100644 v2/backend/processing/pic2serialpy/pic2serialpy.pyde
 create mode 100644 v2/backend/processing/pic2serialpy/sketch.properties
 create mode 100644 v2/backend/processing/pic2serialpy/test1.png

diff --git a/v2/backend/processing/pic2serialpy/pic2serialpy.pyde b/v2/backend/processing/pic2serialpy/pic2serialpy.pyde
new file mode 100644
index 0000000..5186e31
--- /dev/null
+++ b/v2/backend/processing/pic2serialpy/pic2serialpy.pyde
@@ -0,0 +1,95 @@
+add_library('serial')
+import math
+import struct
+import jarray
+
+gamma = 1.7
+
+framerate = 0.0
+brightness = 4
+errorCount = 0
+gammatable = [0 for i in range(0, 256)]
+s = None
+img = None
+ledSerial = None
+
+def setup():
+    global img
+    global gammatable
+    listserials = Serial.list()
+    delay(20)
+    #print("Serial Ports List:")
+    #print(listserials)
+    serialConfigure("/dev/ttyACM0") 
+    if (errorCount > 0):
+        exit()
+    gammatable = [math.pow(i / 255.0, gamma) * 255.0 + 0.5 for i in range(0, 256)]
+    
+    size(40, 1)
+    img = loadImage("test1.png")
+
+def image2data(data):
+    offset = 0
+    for x in range(0, img.width):
+        pixel = [colorWiring(img.pixels[x]) for i in range(0, 8)]
+        imgmask = 0x800000
+        while imgmask != 0:
+            b = 0
+            for i in range(0, 8):
+                if ((pixel[i] & imgmask) != 0):
+                    b |= (1 << i)
+            if b == 255:
+                b = -1
+            data[offset] = b
+            offset += 1
+            imgmask >>= 1
+
+def colorWiring(c):
+    red = (c & 0xFF0000) >> 16
+    green = (c & 0x00FF00) >> 8
+    blue = (c & 0x0000FF)
+    red = gammatable[red]
+    green = gammatable[green]
+    blue = gammatable[blue]
+    red = int(red * brightness) >> 8
+    green = int(green * brightness) >> 8
+    blue = int(blue * brightness) >> 8
+    return (green << 16) | (red << 8) | (blue)
+
+def serialConfigure(portName):
+    global ledSerial
+    try:
+        ledSerial = Serial(this, portName)
+        if ledSerial is None:
+            raise NullPointerException()
+        ledSerial.write('?')
+    except Exception as e:
+        println("Serial port " + portName + " does not exist or is non-functional")
+        errorCount += 1
+        return
+    delay(50);
+    line_serial = ledSerial.readStringUntil(10)
+    if (line is None):
+        println("Serial port " + portName + " is not responding.")
+        println("Is it really a Teensy 3.0 running VideoDisplay?")
+        errorCount += 1
+        return
+    
+    param = line_serial.split(",")
+    if (len(param) != 12):
+        println("Error: port " + portName + " did not respond to LED config query")
+        errorCount += 1
+        return
+
+def draw():
+    global img
+    image(img, 0, 0)
+    data = jarray.zeros(img.width * 24 + 3, "b")
+    image2data(data)
+    data[0] = ord('*')
+    framerate = 30.0
+    usec = int((1000000.0 / framerate) * 0.75)
+    data[1] = usec /2000
+    data[2] = usec >> 8
+    ledSerial.write(data)
+    
diff --git a/v2/backend/processing/pic2serialpy/sketch.properties b/v2/backend/processing/pic2serialpy/sketch.properties
new file mode 100644
index 0000000..8175853
--- /dev/null
+++ b/v2/backend/processing/pic2serialpy/sketch.properties
@@ -0,0 +1,2 @@
+mode.id=jycessing.mode.PythonMode
+mode=Python
diff --git a/v2/backend/processing/pic2serialpy/test1.png b/v2/backend/processing/pic2serialpy/test1.png
new file mode 100644
index 0000000000000000000000000000000000000000..022374119ccc7d828901b7feb1e425e255f56de2
GIT binary patch
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literal 0
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