void NXGL_FUNCNAME(nxgl_fillrectangle, NXGLIB_SUFFIX) (FAR struct lcd_planeinfo_s *pinfo, FAR const struct nxgl_rect_s *rect, NXGL_PIXEL_T color) { unsigned int ncols; unsigned int row; /* Get the dimensions of the rectange to fill in pixels */ ncols = rect->pt2.x - rect->pt1.x + 1; /* Fill the run buffer with the selected color */ NXGL_FUNCNAME(nxgl_fillrun, NXGLIB_SUFFIX)((NXGLIB_RUNTYPE *)pinfo->buffer, color, ncols); /* Then fill the rectangle line-by-line */ for (row = rect->pt1.y; row <= rect->pt2.y; row++) { /* Draw the raster line at this row */ (void)pinfo->putrun(row, rect->pt1.x, pinfo->buffer, ncols); } }
void NXGL_FUNCNAME(nxgl_copyrectangle, NXGLIB_SUFFIX) (FAR struct lcd_planeinfo_s *pinfo, FAR const struct nxgl_rect_s *dest, FAR const void *src, FAR const struct nxgl_point_s *origin, unsigned int srcstride) { FAR const uint8_t *sline; unsigned int ncols; unsigned int row; unsigned int xoffset; #if NXGLIB_BITSPERPIXEL < 8 unsigned int remainder; #endif /* Get the dimensions of the rectange to fill: width in pixels, * height in rows */ ncols = dest->pt2.x - dest->pt1.x + 1; /* Set up to copy the image */ xoffset = dest->pt1.x - origin->x; sline = (FAR const uint8_t *)src + NXGL_SCALEX(xoffset) + (dest->pt1.y - origin->y) * srcstride; #if NXGLIB_BITSPERPIXEL < 8 remainder = NXGL_REMAINDERX(xoffset); #endif /* Copy the image, one row at a time */ for (row = dest->pt1.y; row <= dest->pt2.y; row++) { #if NXGLIB_BITSPERPIXEL < 8 /* if the source pixel is not aligned with a byte boundary, then we will * need to copy the image data to the run buffer first. */ if (remainder != 0) { NXGL_FUNCNAME(nxgl_copyrun, NXGLIB_SUFFIX)(sline, pinfo->buffer, remainder, ncols); (void)pinfo->putrun(row, dest->pt1.x, pinfo->buffer, ncols); } else #endif { /* The pixel data is byte aligned. Copy the image data directly from * the image memory. */ (void)pinfo->putrun(row, dest->pt1.x, sline, ncols); } /* Then adjust the source pointer to refer to the next line in the source * image. */ sline += srcstride; } }
void NXGL_FUNCNAME(nxgl_filltrapezoid,NXGLIB_SUFFIX) (FAR struct lcd_planeinfo_s *pinfo, FAR const struct nxgl_trapezoid_s *trap, FAR const struct nxgl_rect_s *bounds, NXGL_PIXEL_T color) { unsigned int ncols; unsigned int topy; unsigned int boty; unsigned int row; unsigned int botw; b16_t topx1; b16_t topx2; b16_t botx1; b16_t botx2; b16_t dx1dy; b16_t dx2dy; int dy; int ix1; int ix2; /* Get the top run endpoints */ topx1 = trap->top.x1; topx2 = trap->top.x2; /* Calculate the number of rows to render */ topy = trap->top.y; boty = trap->bot.y; /* Get the bottom run endpoints */ botx1 = trap->bot.x1; botx2 = trap->bot.x2; /* Calculate the slope of the left and right side of the trapezoid */ dy = boty - topy; dx1dy = b16divi((botx1 - topx1), dy); dx2dy = b16divi((botx2 - topx2), dy); /* Perform vertical clipping */ if (topy < bounds->pt1.y) { /* Is the entire trapezoid "above" the clipping window? */ if (boty < bounds->pt1.y) { /* Yes.. then do nothing */ return; } /* Calculate the x values for the new top run */ dy = bounds->pt1.y - topy; topx1 += dy * dx1dy; topx2 += dy * dx2dy; /* Clip the top row to render */ topy = bounds->pt1.y; } if (boty > bounds->pt2.y) { /* Is the entire trapezoid "below" the clipping window? */ if (topy > bounds->pt2.y) { /* Yes.. then do nothing */ return; } /* Calculate the x values for the new bottom run */ dy = boty - bounds->pt2.y; botx1 -= dy * dx1dy; botx2 -= dy * dx2dy; /* Clip the bottom row to render */ boty = bounds->pt2.y; } /* Handle the special case where the sides cross (as in an hourglass) */ if (botx1 > botx2) { b16_t tmp; ngl_swap(botx1, botx2, tmp); } /* Fill the run buffer for the maximum run that we will need */ ix1 = b16toi(topx1); ix1 = ngl_clipl(ix1, bounds->pt1.x); ix2 = b16toi(topx2); ix2 = ngl_clipr(ix2, bounds->pt2.x); ncols = ix2 - ix1 + 1; ix1 = b16toi(botx1); ix1 = ngl_clipl(ix1, bounds->pt1.x); ix2 = b16toi(botx2); ix2 = ngl_clipr(ix2, bounds->pt2.x); botw = ix2 - ix1 + 1; if (ncols < botw) { ncols = botw; } NXGL_FUNCNAME(nxgl_fillrun,NXGLIB_SUFFIX)((NXGLIB_RUNTYPE*)pinfo->buffer, color, ncols); /* Then fill the trapezoid row-by-row */ for (row = topy; row <= boty; row++) { /* Handle the special case where the sides cross (as in an hourglass) */ if (topx1 > topx2) { b16_t tmp; ngl_swap(topx1, topx2, tmp); ngl_swap(dx1dy, dx2dy, tmp); } /* Convert the positions to integer and get the run width, clipping to * fit within the bounding box. */ ix1 = b16toi(topx1); ix1 = ngl_clipl(ix1, bounds->pt1.x); ix2 = b16toi(topx2); ix2 = ngl_clipr(ix2, bounds->pt2.x); /* Handle some corner cases where we draw nothing. Otherwise, we will * always draw at least one pixel. */ if (ix1 <= ix2) { /* Then draw the run from ix1 to ix2 at row */ ncols = ix2 - ix1 + 1; (void)pinfo->putrun(row, ix1, pinfo->buffer, ncols); } /* Add the dx/dy value to get the run positions on the next row */ topx1 += dx1dy; topx2 += dx2dy; } }