Diff: PixelBuffer.cpp

Revision:

28:b452e097da53

Parent:

27:bc79f444883b

Child:

29:a362df191524

--- a/PixelBuffer.cpp	Tue Sep 06 22:12:59 2016 +0000
+++ b/PixelBuffer.cpp	Wed Sep 07 21:07:17 2016 +0000
@@ -4,6 +4,7 @@
  * Allrights reserved.
  *
  * Rev 0.97 2016-09-07
+ * Rev 0.98 2016-09-08
  */
 #include "PixelBuffer.h"
 
@@ -25,7 +26,7 @@
         }
         memcpy(dest, buffer, left * sizeof(T));
     }
-} 
+}
 
 //----------------------------------------------------------------------------
 RGBPixels::RGBPixels(RGBColor *buffer, int maxPixels)
@@ -60,7 +61,7 @@
     if (!_pixels && _maxPixels > 0)
     {
         _pixels = new RGBColor[_maxPixels];
-        _buf_owner = true;   
+        _buf_owner = true;
     }
     _numPixels = _maxPixels;
     clear();
@@ -99,7 +100,7 @@
 }
 
 // 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 RGBPixels::fillPixels(const RGBColor color, int index, int len)
+void RGBPixels::fillPixels(int index, const RGBColor color, int len)
 {
     if (_pixels && len > 0 && (uint16_t)index < _numPixels)
     {
@@ -110,7 +111,7 @@
     }
 }
 
-void RGBPixels::fillPixels(const HSVColor color, int index, int len)
+void RGBPixels::fillPixels(int index, const HSVColor color, int len)
 {
     fillPixels(RGBColor(color), index, len);
 }
@@ -174,6 +175,51 @@
 }
 
 //----------------------------------------------------------------------------
+void RGBPixels::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 RGBPixels::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);
+    }
+}
+
+//----------------------------------------------------------------------------
 //----------------------------------------------------------------------------
 HSVPixels::HSVPixels(HSVColor *buffer, int maxPixels)
     : _buf_owner(false)
@@ -207,7 +253,7 @@
     if (!_pixels && _maxPixels > 0)
     {
         _pixels = new HSVColor[_maxPixels];
-        _buf_owner = true;   
+        _buf_owner = true;
     }
     _numPixels = _maxPixels;
     clear();
@@ -321,3 +367,50 @@
 }
 
 //----------------------------------------------------------------------------
+void HSVPixels::makeGradation(int index, HSVColor from, HSVColor to, int len)
+{
+    if (!_pixels || len < 1 || index >= _numPixels || (index + len) < 0)
+        return;
+
+    int end = len;
+    if (index + end > _numPixels)
+        end = _numPixels - index;
+
+    RGBColor rgb_from(from);
+    RGBColor rgb_to(to);
+    RGBColor color;
+    HSVColor *dest = _pixels;
+    if (index > 0)
+        dest += index;
+    for (int i = (index < 0) ? -index : 0; i < end; ++i)
+    {
+        int j = len - i;
+        color.red   = ((rgb_from.red   * j) + (rgb_to.red   * i)) / len;
+        color.green = ((rgb_from.green * j) + (rgb_to.green * i)) / len;
+        color.blue  = ((rgb_from.blue  * j) + (rgb_to.blue  * i)) / len;
+        *dest++     = GammaColor(color);
+    }
+}
+
+void HSVPixels::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);
+    HSVColor *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);
+    }
+}
+
+//----------------------------------------------------------------------------