// algorithm from drawCircle rearranged with hlines drawn between points on the raidus
void SmartMatrix::fillCircle(int16_t x0, int16_t y0, uint16_t radius, const rgb24& fillColor)
{
int a = radius, b = 0;
int radiusError = 1 - a;
if (radius == 0)
return;
// only draw one line per row, skipping the top and bottom
bool hlineDrawn = true;
while (a >= b)
{
// this pair sweeps from horizontal center down
drawFastHLine((a - 1) + x0, (-a + 1) + x0, b + y0, fillColor);
// this pair sweeps from horizontal center up
drawFastHLine((a - 1) + x0, (-a + 1) + x0, -b + y0, fillColor);
if (b > 1 && !hlineDrawn) {
drawFastHLine((b - 1) + x0, (-b + 1) + x0, a + y0, fillColor);
drawFastHLine((b - 1) + x0, (-b + 1) + x0, -a + y0, fillColor);
hlineDrawn = true;
}
b++;
if (radiusError < 0) {
radiusError += 2 * b + 1;
} else {
a--;
hlineDrawn = false;
radiusError += 2 * (b - a + 1);
}
}
}
// Draw a rectangle
void Adafruit_GFX::drawRect(int16_t x, int16_t y, int16_t w, int16_t h,
uint16_t color) {
drawFastHLine(x, y, w, color);
drawFastHLine(x, y+h-1, w, color);
drawFastVLine(x, y, h, color);
drawFastVLine(x+w-1, y, h, color);
}
// Rounded rectangles
void FramebufferGFX::drawRoundRect(int16_t x0, int16_t y0, int16_t x1, int16_t y1, int16_t r, uint16_t color) {
// From Adafruit library (modified)
int16_t w = x1 - x0;
int16_t h = y1 - y0;
int16_t x = x0;
int16_t y = y0;
if (x0 > x1) {
x = x1;
w = -w;
}
if (y0 > y1) {
y = y1;
h = -h;
}
// smarter version
drawFastHLine(x+r , y , w-2*r, color); // Top
drawFastHLine(x+r , y+h-1, w-2*r, color); // Bottom
drawFastVLine(x , y+r , h-2*r, color); // Left
drawFastVLine(x+w-1, y+r , h-2*r, color); // Right
// draw four corners
drawCircleHelper(x+r , y+r , r, 1, color);
drawCircleHelper(x+w-r-1, y+r , r, 2, color);
drawCircleHelper(x+w-r-1, y+h-r-1, r, 4, color);
drawCircleHelper(x+r , y+h-r-1, r, 8, color);
}
// draw a rectangle
void GOFi2cOLED::drawRect(uint8_t x, uint8_t y,
uint8_t w, uint8_t h,
uint8_t color) {
drawFastHLine(x, y, w, color);
drawFastHLine(x, y+h-1, w, color);
drawFastVLine(x, y, h, color);
drawFastVLine(x+w-1, y, h, color);
}
void Arduboy::drawRect
(int16_t x, int16_t y, int16_t w, int16_t h, uint8_t color)
{
drawFastHLine(x, y, w, color);
drawFastHLine(x, y+h-1, w, color);
drawFastVLine(x, y, h, color);
drawFastVLine(x+w-1, y, h, color);
}
// draw a rectangle
void Adafruit_GFX::drawRect(int16 x, int16 y,
int16 w, int16 h,
uint32 color) {
drawFastHLine(x, y, w, color);
drawFastHLine(x, y+h-1, w, color);
drawFastVLine(x, y, h, color);
drawFastVLine(x+w-1, y, h, color);
}
void SmartMatrix::drawRoundRectangle(int16_t x0, int16_t y0, int16_t x1, int16_t y1,
uint16_t radius, const rgb24& outlineColor) {
if (x1 < x0)
SWAPint(x1, x0);
if (y1 < y0)
SWAPint(y1, y0);
// decrease large radius that would break shape
if(radius > (x1-x0)/2)
radius = (x1-x0)/2;
if(radius > (y1-y0)/2)
radius = (y1-y0)/2;
int a = radius, b = 0;
int radiusError = 1 - a;
// draw straight part of outline
drawFastHLine(x0 + radius, x1 - radius, y0, outlineColor);
drawFastHLine(x0 + radius, x1 - radius, y1, outlineColor);
drawFastVLine(x0, y0 + radius, y1 - radius, outlineColor);
drawFastVLine(x1, y0 + radius, y1 - radius, outlineColor);
// convert coordinates to point at center of rounded sections
x0 += radius;
x1 -= radius;
y0 += radius;
y1 -= radius;
while (a >= b)
{
// this pair sweeps from far left towards right
drawPixel(-a + x0, -b + y0, outlineColor);
drawPixel(-a + x0, b + y1, outlineColor);
// this pair sweeps from far right towards left
drawPixel(a + x1, -b + y0, outlineColor);
drawPixel(a + x1, b + y1, outlineColor);
// this pair sweeps from very top towards bottom
drawPixel(-b + x0, -a + y0, outlineColor);
drawPixel(b + x1, -a + y0, outlineColor);
// this pair sweeps from bottom up
drawPixel(-b + x0, a + y1, outlineColor);
drawPixel(b + x1, a + y1, outlineColor);
b++;
if (radiusError < 0) {
radiusError += 2 * b + 1;
} else {
a--;
radiusError += 2 * (b - a + 1);
}
}
}
// draw a rounded rectangle!
void GOFi2cOLED::drawRoundRect(uint8_t x, uint8_t y, uint8_t w, uint8_t h, uint8_t r, uint8_t color) {
// smarter version
drawFastHLine(x+r , y , w-2*r, color); // Top
drawFastHLine(x+r , y+h-1, w-2*r, color); // Bottom
drawFastVLine( x , y+r , h-2*r, color); // Left
drawFastVLine( x+w-1, y+r , h-2*r, color); // Right
// draw four corners
drawCircleHelper(x+r , y+r , r, 1, color);
drawCircleHelper(x+w-r-1, y+r , r, 2, color);
drawCircleHelper(x+w-r-1, y+h-r-1, r, 4, color);
drawCircleHelper(x+r , y+h-r-1, r, 8, color);
}
// Draw a rounded rectangle
void Adafruit_GFX_AS::drawRoundRect(int16_t x, int16_t y, int16_t w,
int16_t h, int16_t r, uint16_t color) {
// smarter version
drawFastHLine(x+r , y , w-2*r, color); // Top
drawFastHLine(x+r , y+h-1, w-2*r, color); // Bottom
drawFastVLine(x , y+r , h-2*r, color); // Left
drawFastVLine(x+w-1, y+r , h-2*r, color); // Right
// draw four corners
drawCircleHelper(x+r , y+r , r, 1, color);
drawCircleHelper(x+w-r-1, y+r , r, 2, color);
drawCircleHelper(x+w-r-1, y+h-r-1, r, 4, color);
drawCircleHelper(x+r , y+h-r-1, r, 8, color);
}
// Rectangles
void FramebufferGFX::drawRect(int16_t x0, int16_t y0, int16_t x1, int16_t y1, uint16_t color) {
int16_t w = x1 - x0;
int16_t h = y1 - y0;
int16_t x = x0;
int16_t y = y0;
if (x0 > x1) {
x = x1;
w = -w;
}
if (y0 > y1) {
y = y1;
h = -h;
}
// (x, y) is lower corner
drawFastHLine(x, y, w, color); // top
drawFastHLine(x, y + h, w, color); // bottom
drawFastVLine(x, y, h, color); // left
drawFastVLine(x + w, y, h, color); // right
}
//*****************************************************************************
void testfastlines(unsigned int color1, unsigned int color2) {
unsigned int x;
unsigned int y;
fillScreen(BLACK);
for (y = 0; y < height() - 1; y += 8) {
drawFastHLine(0, y, width() - 1, color1);
}
delay(100);
for (x = 0; x < width() - 1; x += 8) {
drawFastVLine(x, 0, height() - 1, color2);
}
delay(100);
}
void SmartMatrix::fillRectangle(int16_t x0, int16_t y0, int16_t x1, int16_t y1, const rgb24& color) {
int i;
// Loop only works if y1 > y0
if (y0 > y1) {
SWAPint(y0, y1);
};
// Putting the x coordinates in order saves multiple swaps in drawFastHLine
if (x0 > x1) {
SWAPint(x0, x1);
};
for (i = y0; i <= y1; i++) {
drawFastHLine(x0, x1, i, color);
}
}
void FramebufferGFX::fillRect(int16_t x0, int16_t y0, int16_t x1, int16_t y1, uint16_t color) {
int16_t w = x1 - x0;
int16_t h = y1 - y0;
int16_t x = x0;
int16_t y = y0;
if (x0 > x1) {
x = x1;
w = -w;
}
if (y0 > y1) {
y = y1;
h = -h;
}
// (x, y) is lower corner. draw fill lines from top to bottom.
for (int16_t i=0; i<h; i++) {
drawFastHLine(x, y + i, w, color);
}
}
/***************************************************************************************
** Function name: drawUnicode
** Descriptions: draw a unicode
***************************************************************************************/
ICACHE_FLASH_ATTR int Adafruit_GFX_AS::drawUnicode(uint16_t uniCode, uint16_t x, uint16_t y, uint8_t size)
{
if (size) uniCode -= 32;
uint16_t width = 0;
uint16_t height = 0;
const uint8_t *flash_address = 0;
int8_t gap = 0;
#ifdef LOAD_FONT2
if (size == 2) {
flash_address = chrtbl_f16[uniCode];
width = *(widtbl_f16+uniCode);
height = chr_hgt_f16;
gap = 1;
}
#endif
// if (size == 3) {
// flash_address = pgm_read_word(&chrtbl_f24[uniCode]);
// width = pgm_read_byte(widtbl_f24+uniCode);
// height = chr_hgt_f24;
// gap = 0;
// }
#ifdef LOAD_FONT4
if (size == 4) {
flash_address = chrtbl_f32[uniCode];
width = *(widtbl_f32+uniCode);
height = chr_hgt_f32;
gap = -3;
}
#endif
// if (size == 5) {
// flash_address = pgm_read_word(&chrtbl_f48[uniCode]);
// width = pgm_read_byte(widtbl_f48+uniCode);
// height = chr_hgt_f48;
// gap = -3;
// }
#ifdef LOAD_FONT6
if (size == 6) {
flash_address = chrtbl_f64[uniCode];
width = *(widtbl_f64+uniCode);
height = chr_hgt_f64;
gap = -3;
}
#endif
#ifdef LOAD_FONT7
if (size == 7) {
flash_address = chrtbl_f7s[uniCode];
width = *(widtbl_f7s+uniCode);
height = chr_hgt_f7s;
gap = 2;
}
#endif
uint16_t w = (width+ 7) / 8;
uint16_t pX = 0;
uint16_t pY = y;
uint16_t color = 0;
uint8_t line = 0;
for(int i=0; i<height; i++)
{
if (textcolor != textbgcolor) drawFastHLine(x, pY, width+gap, textbgcolor);
for (int k = 0;k < w; k++)
{
line = *(flash_address + w*i + k);
if(line) {
pX = x + k*8;
if(line & 0x80) drawPixel(pX, pY, textcolor);
if(line & 0x40) drawPixel(pX+1, pY, textcolor);
if(line & 0x20) drawPixel(pX+2, pY, textcolor);
if(line & 0x10) drawPixel(pX+3, pY, textcolor);
if(line & 0x8) drawPixel(pX+4, pY, textcolor);
if(line & 0x4) drawPixel(pX+5, pY, textcolor);
if(line & 0x2) drawPixel(pX+6, pY, textcolor);
if(line & 0x1) drawPixel(pX+7, pY, textcolor);
}
}
pY++;
}
return width+gap; // x +
}
void TFT_ILI9163C::drawLine(int16_t x0, int16_t y0,int16_t x1, int16_t y1, uint16_t color){
if (y0 == y1) {
if (x1 > x0) {
drawFastHLine(x0, y0, x1 - x0 + 1, color);
} else if (x1 < x0) {
drawFastHLine(x1, y0, x0 - x1 + 1, color);
} else {
drawPixel(x0, y0, color);
}
return;
} else if (x0 == x1) {
if (y1 > y0) {
drawFastVLine(x0, y0, y1 - y0 + 1, color);
} else {
drawFastVLine(x0, y1, y0 - y1 + 1, color);
}
return;
}
bool steep = abs(y1 - y0) > abs(x1 - x0);
if (steep) {
swap(x0, y0);
swap(x1, y1);
}
if (x0 > x1) {
swap(x0, x1);
swap(y0, y1);
}
int16_t dx, dy;
dx = x1 - x0;
dy = abs(y1 - y0);
int16_t err = dx / 2;
int16_t ystep;
if (y0 < y1) {
ystep = 1;
} else {
ystep = -1;
}
SPI.beginTransaction(SPISettings(SPICLOCK, MSBFIRST, SPI_MODE0));
int16_t xbegin = x0;
if (steep) {
for (; x0<=x1; x0++) {
err -= dy;
if (err < 0) {
int16_t len = x0 - xbegin;
if (len) {
VLine(y0, xbegin, len + 1, color);
} else {
Pixel(y0, x0, color);
}
xbegin = x0 + 1;
y0 += ystep;
err += dx;
}
}
if (x0 > xbegin + 1) {
VLine(y0, xbegin, x0 - xbegin, color);
}
} else {
for (; x0<=x1; x0++) {
err -= dy;
if (err < 0) {
int16_t len = x0 - xbegin;
if (len) {
HLine(xbegin, y0, len + 1, color);
} else {
Pixel(x0, y0, color);
}
xbegin = x0 + 1;
y0 += ystep;
err += dx;
}
}
if (x0 > xbegin + 1) {
HLine(xbegin, y0, x0 - xbegin, color);
}
}
writecommand_last(CMD_NOP);
SPI.endTransaction();
}
void SmartMatrix::drawRectangle(int16_t x0, int16_t y0, int16_t x1, int16_t y1, const rgb24& color) {
drawFastHLine(x0, x1, y0, color);
drawFastHLine(x0, x1, y1, color);
drawFastVLine(x0, y0, y1, color);
drawFastVLine(x1, y0, y1, color);
}
// Code from http://www.sunshine2k.de/coding/java/TriangleRasterization/TriangleRasterization.html
void SmartMatrix::fillFlatSideTriangleInt(int16_t x1, int16_t y1, int16_t x2, int16_t y2,
int16_t x3, int16_t y3, const rgb24& color) {
int16_t t1x, t2x, t1y, t2y;
bool changed1 = false;
bool changed2 = false;
int8_t signx1, signx2, signy1, signy2, dx1, dy1, dx2, dy2;
int i;
int8_t e1, e2;
t1x = t2x = x1; t1y = t2y = y1; // Starting points
dx1 = abs(x2 - x1);
dy1 = abs(y2 - y1);
dx2 = abs(x3 - x1);
dy2 = abs(y3 - y1);
if (x2 - x1 < 0) {
signx1 = -1;
} else signx1 = 1;
if (x3 - x1 < 0) {
signx2 = -1;
} else signx2 = 1;
if (y2 - y1 < 0) {
signy1 = -1;
} else signy1 = 1;
if (y3 - y1 < 0) {
signy2 = -1;
} else signy2 = 1;
if (dy1 > dx1) { // swap values
SWAPint(dx1, dy1);
changed1 = true;
}
if (dy2 > dx2) { // swap values
SWAPint(dy2, dx2);
changed2 = true;
}
e1 = 2 * dy1 - dx1;
e2 = 2 * dy2 - dx2;
for (i = 0; i <= dx1; i++)
{
drawFastHLine(t1x, t2x, t1y, color);
while (dx1 > 0 && e1 >= 0)
{
if (changed1)
t1x += signx1;
else
t1y += signy1;
e1 = e1 - 2 * dx1;
}
if (changed1)
t1y += signy1;
else
t1x += signx1;
e1 = e1 + 2 * dy1;
/* here we rendered the next point on line 1 so follow now line 2
* until we are on the same y-value as line 1.
*/
while (t2y != t1y)
{
while (dx2 > 0 && e2 >= 0)
{
if (changed2)
t2x += signx2;
else
t2y += signy2;
e2 = e2 - 2 * dx2;
}
if (changed2)
t2y += signy2;
else
t2x += signx2;
e2 = e2 + 2 * dy2;
}
}
}
void screenkeys::drawRect(uint8_t x,uint8_t y,uint8_t w,uint8_t h,bool color) {
drawFastHLine(x, y, w, color);
drawFastHLine(x, y+h-1, w, color);
drawFastVLine(x, y, h, color);
drawFastVLine(x+w-1, y, h, color);
}
void SmartMatrix::fillRoundRectangle(int16_t x0, int16_t y0, int16_t x1, int16_t y1,
uint16_t radius, const rgb24& outlineColor, const rgb24& fillColor) {
if (x1 < x0)
SWAPint(x1, x0);
if (y1 < y0)
SWAPint(y1, y0);
// decrease large radius that would break shape
if(radius > (x1-x0)/2)
radius = (x1-x0)/2;
if(radius > (y1-y0)/2)
radius = (y1-y0)/2;
int a = radius, b = 0;
int radiusError = 1 - a;
if (radius == 0) {
fillRectangle(x0, y0, x1, y1, outlineColor, fillColor);
}
// draw straight part of outline
drawFastHLine(x0 + radius, x1 - radius, y0, outlineColor);
drawFastHLine(x0 + radius, x1 - radius, y1, outlineColor);
drawFastVLine(x0, y0 + radius, y1 - radius, outlineColor);
drawFastVLine(x1, y0 + radius, y1 - radius, outlineColor);
// convert coordinates to point at center of rounded sections
x0 += radius;
x1 -= radius;
y0 += radius;
y1 -= radius;
// only draw one line per row/column, skipping the sides
bool hlineDrawn = true;
bool vlineDrawn = true;
while (a >= b)
{
// this pair sweeps from far left towards right
drawPixel(-a + x0, -b + y0, outlineColor);
drawPixel(-a + x0, b + y1, outlineColor);
// this pair sweeps from far right towards left
drawPixel(a + x1, -b + y0, outlineColor);
drawPixel(a + x1, b + y1, outlineColor);
if (!vlineDrawn) {
drawFastVLine(-a + x0, (-b + 1) + y0, (b - 1) + y1, fillColor);
drawFastVLine(a + x1, (-b + 1) + y0, (b - 1) + y1, fillColor);
vlineDrawn = true;
}
// this pair sweeps from very top towards bottom
drawPixel(-b + x0, -a + y0, outlineColor);
drawPixel(b + x1, -a + y0, outlineColor);
// this pair sweeps from bottom up
drawPixel(-b + x0, a + y1, outlineColor);
drawPixel(b + x1, a + y1, outlineColor);
if (!hlineDrawn) {
drawFastHLine((-b + 1) + x0, (b - 1) + x1, -a + y0, fillColor);
drawFastHLine((-b + 1) + x0, (b - 1) + x1, a + y1, fillColor);
hlineDrawn = true;
}
b++;
if (radiusError < 0) {
radiusError += 2 * b + 1;
} else {
a--;
hlineDrawn = false;
vlineDrawn = false;
radiusError += 2 * (b - a + 1);
}
}
// draw rectangle in center
fillRectangle(x0 - a, y0 - a, x1 + a, y1 + a, fillColor);
}
void FramebufferGFX::fillTriangle(int16_t x0, int16_t y0, int16_t x1, int16_t y1, int16_t x2, int16_t y2, uint16_t color) {
// From Adafruit library
int16_t a, b, y, last;
// Sort coordinates by Y order (y2 >= y1 >= y0)
if (y0 > y1) {
swap(y0, y1); swap(x0, x1);
}
if (y1 > y2) {
swap(y2, y1); swap(x2, x1);
}
if (y0 > y1) {
swap(y0, y1); swap(x0, x1);
}
if(y0 == y2) { // Handle awkward all-on-same-line case as its own thing
a = b = x0;
if(x1 < a) a = x1;
else if(x1 > b) b = x1;
if(x2 < a) a = x2;
else if(x2 > b) b = x2;
drawFastHLine(a, y0, b-a+1, color);
return;
}
int16_t
dx01 = x1 - x0,
dy01 = y1 - y0,
dx02 = x2 - x0,
dy02 = y2 - y0,
dx12 = x2 - x1,
dy12 = y2 - y1,
sa = 0,
sb = 0;
// For upper part of triangle, find scanline crossings for segments
// 0-1 and 0-2. If y1=y2 (flat-bottomed triangle), the scanline y1
// is included here (and second loop will be skipped, avoiding a /0
// error there), otherwise scanline y1 is skipped here and handled
// in the second loop...which also avoids a /0 error here if y0=y1
// (flat-topped triangle).
if(y1 == y2) last = y1; // Include y1 scanline
else last = y1-1; // Skip it
for(y=y0; y<=last; y++) {
a = x0 + sa / dy01;
b = x0 + sb / dy02;
sa += dx01;
sb += dx02;
/* longhand:
a = x0 + (x1 - x0) * (y - y0) / (y1 - y0);
b = x0 + (x2 - x0) * (y - y0) / (y2 - y0);
*/
if(a > b) swap(a,b);
drawFastHLine(a, y, b-a+1, color);
}
// For lower part of triangle, find scanline crossings for segments
// 0-2 and 1-2. This loop is skipped if y1=y2.
sa = dx12 * (y - y1);
sb = dx02 * (y - y0);
for(; y<=y2; y++) {
a = x1 + sa / dy12;
b = x0 + sb / dy02;
sa += dx12;
sb += dx02;
/* longhand:
a = x1 + (x2 - x1) * (y - y1) / (y2 - y1);
b = x0 + (x2 - x0) * (y - y0) / (y2 - y0);
*/
if(a > b) swap(a,b);
drawFastHLine(a, y, b-a+1, color);
}
}
