Diff: WS281X.cpp

Revision:

28:b452e097da53

Parent:

27:bc79f444883b

Child:

29:a362df191524

--- a/WS281X.cpp	Tue Sep 06 22:12:59 2016 +0000
+++ b/WS281X.cpp	Wed Sep 07 21:07:17 2016 +0000
@@ -18,6 +18,7 @@
  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  *
  * Rev 0.97 2016-09-07
+ * Rev 0.98 2016-09-08
  */
 
 #include "WS281X.h"
@@ -56,7 +57,7 @@
 } 
 
 //----------------------------------------------------------------------------
-WS281X::WS281X(PinName wirePin, PinMode pinMode, int maxPixels, RGBOrder rgbOrder)
+WS281X::WS281X(PinName wirePin, PinMode pinMode, int maxPixels, RGBOrder order)
     : _wirePin(wirePin), _gpio(), _buf_owner(false)
 {
     gpio_init_inout(&_gpio, wirePin, PIN_OUTPUT, pinMode, 0);
@@ -64,13 +65,13 @@
     pin_mode_ex(wirePin, pinMode);
 #endif
 
-    setRGBOrder(rgbOrder);
+    rgbOrder(order);
     _dummyPixel = 0;
     setPixelBuffer(0, maxPixels);
 }
 
 WS281X::WS281X(PinName wirePin, PinMode pinMode,
-        RGBColor *buffer, int maxPixels, RGBOrder rgbOrder)
+        RGBColor *buffer, int maxPixels, RGBOrder order)
     : _wirePin(wirePin), _gpio(), _buf_owner(false)
 {
     gpio_init_inout(&_gpio, wirePin, PIN_OUTPUT, pinMode, 0);
@@ -78,7 +79,7 @@
     pin_mode_ex(wirePin, pinMode);
 #endif
 
-    setRGBOrder(rgbOrder);
+    rgbOrder(order);
     _dummyPixel = 0;
     setPixelBuffer(buffer, maxPixels);
 }
@@ -152,19 +153,20 @@
 }
 #endif
 
-void WS281X::setRGBOrder(RGBOrder rgbOrder)
+WS281X::RGBOrder WS281X::rgbOrder(WS281X::RGBOrder order)
 {
-    _rgbOrder = rgbOrder;
-    switch(_rgbOrder)
+    switch(order)
     {
-        case RGB:   _1st = 0; _2nd = 1; _3rd = 2; break;
-        case RBG:   _1st = 0; _2nd = 2; _3rd = 1; break;
-        case GRB:   _1st = 1; _2nd = 0; _3rd = 2; break;
-        case GBR:   _1st = 2; _2nd = 0; _3rd = 1; break;
-        case BRG:   _1st = 1; _2nd = 2; _3rd = 0; break;
-        case BGR:   _1st = 2; _2nd = 1; _3rd = 0; break;
-        default:    _1st = 0; _2nd = 1; _3rd = 2; break;
+        case RGB: _1st = 0; _2nd = 1; _3rd = 2; _rgbOrder = RGB; break;
+        case RBG: _1st = 0; _2nd = 2; _3rd = 1; _rgbOrder = RGB; break;
+        case GRB: _1st = 1; _2nd = 0; _3rd = 2; _rgbOrder = GRB; break;
+        case GBR: _1st = 2; _2nd = 0; _3rd = 1; _rgbOrder = GBR; break;
+        case BRG: _1st = 1; _2nd = 2; _3rd = 0; _rgbOrder = BRG; break;
+        case BGR: _1st = 2; _2nd = 1; _3rd = 0; _rgbOrder = BGR; break;
+        default:
+            break;
     }
+    return _rgbOrder;
 }
 
 //#define _nop1()     __nop()
@@ -413,7 +415,7 @@
 }
 
 // 指定色を指定位置のピクセルから指定サイズ分書き込む
-void WS281X::fillPixels(const RGBColor color, int index, int len)
+void WS281X::fillPixels(int index, const RGBColor color, int len)
 {
     if (_pixels && len > 0 && (uint16_t)index < _numPixels)
     {
@@ -425,9 +427,9 @@
 }
 
 // 指定位置のピクセルから指定色を指定サイズ分書き込む
-void WS281X::fillPixels(const HSVColor color, int index, int len)
+void WS281X::fillPixels(int index, const HSVColor color, int len)
 {
-    fillPixels(color, index, len);
+    fillPixels(index, color, len);
 }
 
 // 先頭から指定サイズ分のブロックをバッファの最後までコピーする
@@ -462,6 +464,50 @@
     }
 }
 
+void WS281X::makeGradation(int index, RGBColor from, RGBColor to, int len)
+{
+    if (!_pixels || len < 1 || index >= _numPixels || (index + len) < 0)
+        return;
+
+    int end = len;
+    if (index + end > _numPixels)
+        end = _numPixels - index;
+
+    RGBColor color;
+    RGBColor *dest = _pixels;
+    if (index > 0)
+        dest += index;
+    for (int i = (index < 0) ? -index : 0; i < end; ++i)
+    {
+        int j = len - i;
+        color.red   = ((from.red   * j) + (to.red   * i)) / len;
+        color.green = ((from.green * j) + (to.green * i)) / len;
+        color.blue  = ((from.blue  * j) + (to.blue  * i)) / len;
+        *dest++     = GammaColor(color);
+    }
+}
+
+void WS281X::makeRainbow(int index, HSVColor color, int len, int direction)
+{
+    if (!_pixels || len < 1 || index >= _numPixels || (index + len) < 0)
+        return;
+
+    int end = len;
+    if (index + end > _numPixels)
+        end = _numPixels - index;
+
+    HSVColor hsv(color);
+    RGBColor *dest = _pixels;
+    if (index > 0)
+        dest += index;
+    direction = (direction >= 0) ? -3600 : 3600;
+    for (int i = (index < 0) ? -index : 0; i < end; ++i)
+    {
+        hsv.hue = color.hue + direction * i / len;
+        *dest++ = GammaColor(hsv);
+    }
+}
+
 // 指定色でバッファを埋めた後表示
 void WS281X::show(const RGBColor color)
 {