/*
* \brief Draw a line on LCD, which is not horizontal or vertical.
*
* \param x X-coordinate of line start.
* \param y Y-coordinate of line start.
* \param length line length.
* \param direction line direction: 0 - horizontal, 1 - vertical.
* \param color LcdColor_t color.
*/
extern uint32_t LCDD_DrawLineBresenham( uint32_t dwX1, uint32_t dwY1, uint32_t dwX2, uint32_t dwY2 , uint32_t color)
{
int dx, dy ;
int i ;
int xinc, yinc, cumul ;
int x, y ;
x = dwX1 ;
y = dwY1 ;
dx = dwX2 - dwX1 ;
dy = dwY2 - dwY1 ;
xinc = ( dx > 0 ) ? 1 : -1 ;
yinc = ( dy > 0 ) ? 1 : -1 ;
dx = ( dx > 0 ) ? dx : -dx ;
dy = ( dy > 0 ) ? dy : -dy ;
LCDD_DrawPixel(x , y , color);
if ( dx > dy )
{
cumul = dx / 2 ;
for ( i = 1 ; i <= dx ; i++ )
{
x += xinc ;
cumul += dy ;
if ( cumul >= dx )
{
cumul -= dx ;
y += yinc ;
}
LCDD_DrawPixel(x , y , color);
}
}
else
{
cumul = dy / 2 ;
for ( i = 1 ; i <= dy ; i++ )
{
y += yinc ;
cumul += dx ;
if ( cumul >= dy )
{
cumul -= dy ;
x += xinc ;
}
LCDD_DrawPixel(x , y , color);
}
}
return 0 ;
}
/**
* \brief Draws a circle on LCD, at the given coordinates.
*
* \param x X-coordinate of circle center.
* \param y Y-coordinate of circle center.
* \param r circle radius.
* \param color circle color.
*/
extern uint32_t LCDD_DrawCircle( uint32_t x, uint32_t y, uint32_t r, uint32_t color )
{
signed int d; /* Decision Variable */
uint32_t curX; /* Current X Value */
uint32_t curY; /* Current Y Value */
d = 3 - (r << 1);
curX = 0;
curY = r;
while (curX <= curY)
{
LCDD_DrawPixel(x + curX, y + curY, color);
LCDD_DrawPixel(x + curX, y - curY, color);
LCDD_DrawPixel(x - curX, y + curY, color);
LCDD_DrawPixel(x - curX, y - curY, color);
LCDD_DrawPixel(x + curY, y + curX, color);
LCDD_DrawPixel(x + curY, y - curX, color);
LCDD_DrawPixel(x - curY, y + curX, color);
LCDD_DrawPixel(x - curY, y - curX, color);
if (d < 0) {
d += (curX << 2) + 6;
}
else {
d += ((curX - curY) << 2) + 10;
curY--;
}
curX++;
}
return 0;
}
//------------------------------------------------------------------------------
/// Draws a rectangle inside a LCD buffer, at the given coordinates.
/// \param pBuffer LCD buffer to draw on.
/// \param x X-coordinate of upper-left rectangle corner.
/// \param y Y-coordinate of upper-left rectangle corner.
/// \param width Rectangle width in pixels.
/// \param height Rectangle height in pixels.
/// \param color Rectangle color.
//------------------------------------------------------------------------------
void LCDD_DrawRectangle(
void *pBuffer,
unsigned int x,
unsigned int y,
unsigned int width,
unsigned int height,
unsigned int color)
{
unsigned int rx, ry;
for (ry=0; ry < height; ry++) {
for (rx=0; rx < width; rx++) {
LCDD_DrawPixel(pBuffer, x+rx, y+ry, color);
}
}
}
void Sg_DrawPixel(int X,int Y,SgColor color)
{
LCDD_DrawPixel(X,Y,color);
}
