create swpixel implementation

Author: Owen L - SFE

src/HyperDisplay_ILI9163C.cpp

@@ -121,6 +121,23 @@ void 	ILI9163C::hwpixel(hd_hw_extent_t x0, hd_hw_extent_t y0, color_t data, hd_c
 	writeToRAM( (uint8_t*)value, len );
 }
 
+void	ILI9163C::swpixel( hd_extent_t x0, hd_extent_t y0, color_t data, hd_colors_t colorCycleLength, hd_colors_t startColorOffset)
+{
+	if(data == NULL){ return; }
+	if(colorCycleLength == 0){ return; }
+
+	startColorOffset = getNewColorOffset(colorCycleLength, startColorOffset, 0);	// This line is needed to condition the user's input start color offset because it could be greater than the cycle length
+	color_t value = getOffsetColor(data, startColorOffset);
+
+	hd_hw_extent_t x0w = (hd_hw_extent_t)x0;	// Cast to hw extent type to be sure of integer values
+	hd_hw_extent_t y0w = (hd_hw_extent_t)y0;
+
+	hd_pixels_t pixOffst = wToPix(pCurrentWindow, x0, y0);			// It was already ensured that this will be in range 
+	color_t dest = getOffsetColor(pCurrentWindow->data, pixOffst);	// Rely on the user's definition of a pixel's width in memory
+	uint32_t len = (uint32_t)getOffsetColor(0x00, 1);				// Getting the offset from zero for one pixel tells us how many bytes to copy
+
+	memcpy((void*)dest, (void*)value, (size_t)len);		// Copy data into the window's buffer
+}
 
 
 // Basic Control Functions

src/HyperDisplay_ILI9163C.h

@@ -166,6 +166,7 @@ class ILI9163C : virtual public hyperdisplay{
     // virtual void 	hwrectangle(uint16_t x0, uint16_t y0, uint16_t x1, uint16_t y1, bool filled = false, color_t data = NULL, uint16_t colorCycleLength = 1, uint16_t startColorOffset = 0, bool reverseGradient = false, bool gradientVertical = false); 
     // virtual void 	hwfillFromArray(uint16_t x0, uint16_t y0, uint16_t x1, uint16_t y1, uint32_t numPixels, color_t data);
 
+	void swpixel( hd_extent_t x0, hd_extent_t y0, color_t data = NULL, hd_colors_t colorCycleLength = 1, hd_colors_t startColorOffset = 0);
 
 public: