2002-11-08 00:02:15 -08:00
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#include "evas_common.h"
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2006-05-02 00:28:49 -07:00
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static void
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_evas_draw_point(RGBA_Image *dst, RGBA_Draw_Context *dc, int x, int y);
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static void
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_evas_draw_simple_line(RGBA_Image *dst, RGBA_Draw_Context *dc, int x0, int y0, int x1, int y1);
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static void
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_evas_draw_line(RGBA_Image *dst, RGBA_Draw_Context *dc, int x0, int y0, int x1, int y1);
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static void
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_evas_draw_line_aa(RGBA_Image *dst, RGBA_Draw_Context *dc, int x0, int y0, int x1, int y1);
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#define IN_RANGE(x, y, w, h) \
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( ((unsigned)(x) < (w)) && ((unsigned)(y) < (h)) )
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#define IN_RECT(x, y, rx, ry, rw, rh) \
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( ((unsigned)((x) - (rx)) < (rw)) && ((unsigned)((y) - (ry)) < (rh)) )
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#define EXCHANGE_POINTS(x0, y0, x1, y1) \
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{ \
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int _tmp = y0; \
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\
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y0 = y1; \
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y1 = _tmp; \
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\
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_tmp = x0; \
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x0 = x1; \
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x1 = _tmp; \
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}
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2002-11-08 00:02:15 -08:00
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void
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2002-11-13 21:38:10 -08:00
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evas_common_line_init(void)
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2002-11-08 00:02:15 -08:00
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{
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}
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void
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2006-05-02 00:28:49 -07:00
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evas_common_line_draw(RGBA_Image *dst, RGBA_Draw_Context *dc, int x0, int y0, int x1, int y1)
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2002-11-08 00:02:15 -08:00
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{
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2006-05-02 00:28:49 -07:00
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int x, y, w, h;
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int clx, cly, clw, clh;
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int cuse, cx, cy, cw, ch;
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if ((x0 == x1) && (y0 == y1))
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2002-11-08 00:02:15 -08:00
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{
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2006-05-02 00:28:49 -07:00
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_evas_draw_point(dst, dc, x0, y0);
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return;
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}
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clx = cly = 0;
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clw = dst->image->w;
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clh = dst->image->h;
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/* save out clip info */
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cuse = dc->clip.use;
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cx = dc->clip.x;
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cy = dc->clip.y;
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cw = dc->clip.w;
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ch = dc->clip.h;
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if (cuse)
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{
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RECTS_CLIP_TO_RECT(clx, cly, clw, clh, cx, cy, cw, ch);
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if ((clw < 1) || (clh < 1))
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return;
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}
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x = MIN(x0, x1);
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y = MIN(y0, y1);
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w = MAX(x0, x1) - x + 1;
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h = MAX(y0, y1) - y + 1;
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RECTS_CLIP_TO_RECT(clx, cly, clw, clh, x, y, w, h);
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if ((clw < 1) || (clh < 1))
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return;
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dc->clip.use = 1;
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dc->clip.x = clx;
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dc->clip.y = cly;
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dc->clip.w = clw;
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dc->clip.h = clh;
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if (dc->anti_alias)
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_evas_draw_line_aa(dst, dc, x0, y0, x1, y1);
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else
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_evas_draw_line(dst, dc, x0, y0, x1, y1);
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/* restore clip info */
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dc->clip.use = cuse;
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dc->clip.x = cx;
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dc->clip.y = cy;
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dc->clip.w = cw;
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dc->clip.h = ch;
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evas_common_cpu_end_opt();
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}
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static void
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_evas_draw_point(RGBA_Image *dst, RGBA_Draw_Context *dc, int x, int y)
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{
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RGBA_Gfx_Pt_Func pfunc;
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if (!IN_RANGE(x, y, dst->image->w, dst->image->h))
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return;
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if ((dc->clip.use) && (!IN_RECT(x, y, dc->clip.x, dc->clip.y, dc->clip.w, dc->clip.h)))
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return;
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pfunc = evas_common_gfx_func_composite_color_pt_get(dc->col.col, dst, dc->render_op);
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if (pfunc)
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pfunc(0, 255, dc->col.col, dst->image->data + (dst->image->w * y) + x);
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}
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/*
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these functions use the dc->clip data as bounding
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data. they assume that such data has already been cut
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back to lie in the dst image rect and the object's
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(line) bounding rect.
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*/
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static void
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_evas_draw_simple_line(RGBA_Image *dst, RGBA_Draw_Context *dc, int x0, int y0, int x1, int y1)
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{
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int dx, dy, len, lx, ty, rx, by;
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int clx, cly, clw, clh;
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int dstw;
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DATA32 *p, color;
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RGBA_Gfx_Pt_Func pfunc;
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RGBA_Gfx_Func sfunc;
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dstw = dst->image->w;
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color = dc->col.col;
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if (y0 > y1)
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EXCHANGE_POINTS(x0, y0, x1, y1)
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dx = x1 - x0;
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dy = y1 - y0;
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clx = dc->clip.x;
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cly = dc->clip.y;
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clw = dc->clip.w;
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clh = dc->clip.h;
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lx = clx;
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rx = clx + clw - 1;
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ty = cly;
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by = cly + clh - 1;
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if (dy == 0)
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{
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if (dx < 0)
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2004-01-25 19:31:40 -08:00
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{
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2006-05-02 00:28:49 -07:00
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int tmp = x1;
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x1 = x0;
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x0 = tmp;
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2004-01-25 19:31:40 -08:00
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}
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2006-05-02 00:28:49 -07:00
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if (x0 < lx) x0 = lx;
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if (x1 > rx) x1 = rx;
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len = x1 - x0 + 1;
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p = dst->image->data + (dstw * y0) + x0;
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sfunc = evas_common_gfx_func_composite_color_span_get(color, dst, len, dc->render_op);
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if (sfunc)
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sfunc(NULL, NULL, color, p, len);
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return;
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}
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pfunc = evas_common_gfx_func_composite_color_pt_get(color, dst, dc->render_op);
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if (!pfunc) return;
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if (dx == 0)
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{
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if (y0 < ty) y0 = ty;
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if (y1 > by) y1 = by;
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len = y1 - y0 + 1;
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p = dst->image->data + (dstw * y0) + x0;
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while (len--)
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2004-01-25 19:31:40 -08:00
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{
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2006-05-02 00:28:49 -07:00
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pfunc(0, 255, color, p);
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p += dstw;
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}
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return;
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}
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if ((dy == dx) || (dy == -dx))
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{
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int p0_in, p1_in;
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p0_in = (IN_RECT(x0, y0, clx, cly, clw, clh) ? 1 : 0);
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p1_in = (IN_RECT(x1, y1, clx, cly, clw, clh) ? 1 : 0);
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if (dx > 0)
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{
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if (!p0_in)
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{
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x0 = x0 + (ty - y0);
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y0 = ty;
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if (x0 > rx) return;
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if (x0 < lx)
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{
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y0 = y0 + (lx - x0);
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x0 = lx;
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if ((y0 < ty) || (y0 > by)) return;
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}
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}
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if (!p1_in)
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{
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x1 = x0 + (by - y0);
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y1 = by;
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if (x1 < lx) return;
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if (x1 > rx)
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{
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y1 = y0 + (rx - x0);
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x1 = rx;
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if ((y1 < ty) || (y1 > by)) return;
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}
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}
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2004-01-25 19:31:40 -08:00
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}
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else
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{
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2006-05-02 00:28:49 -07:00
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if (!p0_in)
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{
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x0 = x0 - (ty - y0);
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y0 = ty;
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if (x0 < lx) return;
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if (x0 > rx)
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{
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y0 = y0 - (rx - x0);
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x0 = rx;
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if ((y0 < ty) || (y0 > by)) return;
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}
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}
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if (!p1_in)
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{
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x1 = x0 - (by - y0);
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y1 = by;
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if (x1 > rx) return;
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if (x1 < lx)
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{
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y1 = y0 - (lx - x0);
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x1 = lx;
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if ((y1 < ty) || (y1 > by)) return;
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}
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}
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}
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len = y1 - y0 + 1;
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p = dst->image->data + (dstw * y0) + x0;
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if (dx > 0) dstw++;
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else dstw--;
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while (len--)
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{
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pfunc(0, 255, color, p);
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p += dstw;
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}
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}
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}
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#define SETUP_LINE_SHALLOW \
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if (x0 > x1) \
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{ \
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EXCHANGE_POINTS(x0, y0, x1, y1) \
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dx = -dx; \
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dy = -dy; \
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} \
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\
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px = x0; \
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py = y0; \
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\
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p0_in = (IN_RANGE(x0 , y0 , clw, clh) ? 1 : 0); \
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p1_in = (IN_RANGE(x1 , y1 , clw, clh) ? 1 : 0); \
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\
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dely = 1; \
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dh = dstw; \
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if (dy < 0) \
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{ \
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dely = -1; \
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dh = -dstw; \
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} \
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\
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dyy = ((dy) << 16) / (dx); \
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\
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if (!p0_in) \
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{ \
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dxx = ((dx) << 16) / (dy); \
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if (px < 0) \
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{ \
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x = -px; px = 0; \
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yy = x * dyy; \
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y = yy >> 16; \
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if (!a_a) \
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y += (yy - (y << 16)) >> 15; \
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py += y; \
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if ((dely > 0) && (py >= clh)) \
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return; \
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else if ((dely < 0) && (py < -1)) \
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return; \
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} \
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\
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y = 0; \
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if ((dely > 0) && (py < -1)) \
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y = (-1 - py); \
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else if ((dely < 0) && (py >= clh)) \
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y = (clh - 1 - py); \
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\
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xx = y * dxx; \
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x = xx >> 16; \
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if (!a_a) \
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x += (xx - (x << 16)) >> 15; \
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px += x; \
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if (px >= clw) return; \
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\
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yy = x * dyy; \
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y = yy >> 16; \
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if (!a_a) \
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y += (yy - (y << 16)) >> 15; \
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py += y; \
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if ((dely > 0) && (py >= clh)) \
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return; \
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else if ((dely < 0) && (py < -1)) \
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return; \
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} \
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\
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p = data + (dstw * py) + px; \
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\
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x = px - x0; \
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yy = x * dyy; \
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prev_y = (yy >> 16); \
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\
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rx = MIN(x1 + 1, clw); \
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by = clh - 1;
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#define SETUP_LINE_STEEP \
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if (y0 > y1) \
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{ \
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EXCHANGE_POINTS(x0, y0, x1, y1) \
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dx = -dx; \
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dy = -dy; \
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} \
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\
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px = x0; \
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py = y0; \
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\
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p0_in = (IN_RANGE(x0 , y0 , clw, clh) ? 1 : 0); \
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p1_in = (IN_RANGE(x1 , y1 , clw, clh) ? 1 : 0); \
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\
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delx = 1; \
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if (dx < 0) \
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delx = -1; \
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\
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dxx = ((dx) << 16) / (dy); \
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\
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if (!p0_in) \
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{ \
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dyy = ((dy) << 16) / (dx); \
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\
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if (py < 0) \
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{ \
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y = -py; py = 0; \
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xx = y * dxx; \
|
|
|
|
x = xx >> 16; \
|
|
|
|
if (!a_a) \
|
|
|
|
x += (xx - (x << 16)) >> 15; \
|
|
|
|
px += x; \
|
|
|
|
if ((delx > 0) && (px >= clw)) \
|
|
|
|
return; \
|
|
|
|
else if ((delx < 0) && (px < -1)) \
|
|
|
|
return; \
|
|
|
|
} \
|
|
|
|
\
|
|
|
|
x = 0; \
|
|
|
|
if ((delx > 0) && (px < -1)) \
|
|
|
|
x = (-1 - px); \
|
|
|
|
else if ((delx < 0) && (px >= clw)) \
|
|
|
|
x = (clw - 1 - px); \
|
|
|
|
\
|
|
|
|
yy = x * dyy; \
|
|
|
|
y = yy >> 16; \
|
|
|
|
if (!a_a) \
|
|
|
|
y += (yy - (y << 16)) >> 15; \
|
|
|
|
py += y; \
|
|
|
|
if (py >= clh) return; \
|
|
|
|
\
|
|
|
|
xx = y * dxx; \
|
|
|
|
x = xx >> 16; \
|
|
|
|
if (!a_a) \
|
|
|
|
x += (xx - (x << 16)) >> 15; \
|
|
|
|
px += x; \
|
|
|
|
if ((delx > 0) && (px >= clw)) \
|
|
|
|
return; \
|
|
|
|
else if ((delx < 0) && (px < -1)) \
|
|
|
|
return; \
|
|
|
|
} \
|
|
|
|
\
|
|
|
|
p = data + (dstw * py) + px; \
|
|
|
|
\
|
|
|
|
y = py - y0; \
|
|
|
|
xx = y * dxx; \
|
|
|
|
prev_x = (xx >> 16); \
|
|
|
|
\
|
|
|
|
by = MIN(y1 + 1, clh); \
|
|
|
|
rx = clw - 1;
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
static void
|
|
|
|
_evas_draw_line(RGBA_Image *dst, RGBA_Draw_Context *dc, int x0, int y0, int x1, int y1)
|
|
|
|
{
|
|
|
|
int px, py, x, y, prev_x, prev_y;
|
|
|
|
int dx, dy, rx, by, p0_in, p1_in, dh, a_a = 0;
|
|
|
|
int delx, dely, xx, yy, dxx, dyy;
|
|
|
|
int clx, cly, clw, clh;
|
|
|
|
int dstw;
|
|
|
|
DATA32 *p, *data, color;
|
|
|
|
RGBA_Gfx_Pt_Func pfunc;
|
|
|
|
|
|
|
|
dx = x1 - x0;
|
|
|
|
dy = y1 - y0;
|
|
|
|
|
|
|
|
if ( (dx == 0) || (dy == 0) || (dx == dy) || (dx == -dy) )
|
|
|
|
{
|
|
|
|
_evas_draw_simple_line(dst, dc, x0, y0, x1, y1);
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
color = dc->col.col;
|
|
|
|
pfunc = evas_common_gfx_func_composite_color_pt_get(color, dst, dc->render_op);
|
|
|
|
if (!pfunc) return;
|
|
|
|
|
|
|
|
clx = dc->clip.x;
|
|
|
|
cly = dc->clip.y;
|
|
|
|
clw = dc->clip.w;
|
|
|
|
clh = dc->clip.h;
|
|
|
|
|
|
|
|
data = dst->image->data;
|
|
|
|
dstw = dst->image->w;
|
|
|
|
|
|
|
|
data += (dstw * cly) + clx;
|
|
|
|
x0 -= clx;
|
|
|
|
y0 -= cly;
|
|
|
|
x1 -= clx;
|
|
|
|
y1 -= cly;
|
|
|
|
|
|
|
|
/* shallow: x-parametric */
|
|
|
|
if ((dy < dx) || (dy < -dx))
|
|
|
|
{
|
|
|
|
SETUP_LINE_SHALLOW
|
|
|
|
|
|
|
|
while (px < rx)
|
|
|
|
{
|
|
|
|
y = (yy >> 16);
|
|
|
|
y += ((yy - (y << 16)) >> 15);
|
|
|
|
if (prev_y != y)
|
|
|
|
{
|
|
|
|
prev_y = y;
|
|
|
|
p += dh;
|
|
|
|
py += dely;
|
|
|
|
}
|
|
|
|
if (!p1_in)
|
|
|
|
{
|
|
|
|
if ((py < 0) && (dely < 0)) return;
|
|
|
|
if ((py > by) && (dely > 0)) return;
|
|
|
|
}
|
|
|
|
if (IN_RANGE(px, py, clw, clh))
|
|
|
|
pfunc(0, 255, color, p);
|
|
|
|
yy += dyy;
|
|
|
|
px++;
|
|
|
|
p++;
|
2004-01-25 19:31:40 -08:00
|
|
|
}
|
2002-11-08 00:02:15 -08:00
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
2006-05-02 00:28:49 -07:00
|
|
|
/* steep: y-parametric */
|
|
|
|
|
|
|
|
SETUP_LINE_STEEP
|
|
|
|
|
|
|
|
while (py < by)
|
2002-11-08 00:02:15 -08:00
|
|
|
{
|
2006-05-02 00:28:49 -07:00
|
|
|
x = (xx >> 16);
|
|
|
|
x += ((xx - (x << 16)) >> 15);
|
|
|
|
if (prev_x != x)
|
2002-11-08 00:02:15 -08:00
|
|
|
{
|
2006-05-02 00:28:49 -07:00
|
|
|
prev_x = x;
|
|
|
|
px += delx;
|
|
|
|
p += delx;
|
2002-11-08 00:02:15 -08:00
|
|
|
}
|
2006-05-02 00:28:49 -07:00
|
|
|
if (!p1_in)
|
2002-11-08 00:02:15 -08:00
|
|
|
{
|
2006-05-02 00:28:49 -07:00
|
|
|
if ((px < 0) && (delx < 0)) return;
|
|
|
|
if ((px > rx) && (delx > 0)) return;
|
2002-11-08 00:02:15 -08:00
|
|
|
}
|
2006-05-02 00:28:49 -07:00
|
|
|
if (IN_RANGE(px, py, clw, clh))
|
|
|
|
pfunc(0, 255, color, p);
|
|
|
|
xx += dxx;
|
|
|
|
py++;
|
|
|
|
p += dstw;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
static void
|
|
|
|
_evas_draw_line_aa(RGBA_Image *dst, RGBA_Draw_Context *dc, int x0, int y0, int x1, int y1)
|
|
|
|
{
|
|
|
|
int px, py, x, y, prev_x, prev_y;
|
|
|
|
int dx, dy, rx, by, p0_in, p1_in, dh, a_a = 1;
|
|
|
|
int delx, dely, xx, yy, dxx, dyy;
|
|
|
|
int clx, cly, clw, clh;
|
|
|
|
int dstw;
|
|
|
|
DATA32 *p, *data, color;
|
|
|
|
RGBA_Gfx_Pt_Func pfunc;
|
|
|
|
|
|
|
|
dx = x1 - x0;
|
|
|
|
dy = y1 - y0;
|
|
|
|
|
|
|
|
if ( (dx == 0) || (dy == 0) || (dx == dy) || (dx == -dy) )
|
|
|
|
{
|
|
|
|
_evas_draw_simple_line(dst, dc, x0, y0, x1, y1);
|
|
|
|
return;
|
2002-11-08 00:02:15 -08:00
|
|
|
}
|
|
|
|
|
2006-05-02 00:28:49 -07:00
|
|
|
color = dc->col.col;
|
|
|
|
pfunc = evas_common_gfx_func_composite_mask_color_pt_get(color, dst, dc->render_op);
|
|
|
|
if (!pfunc) return;
|
2002-11-08 00:02:15 -08:00
|
|
|
|
2006-05-02 00:28:49 -07:00
|
|
|
clx = dc->clip.x;
|
|
|
|
cly = dc->clip.y;
|
|
|
|
clw = dc->clip.w;
|
|
|
|
clh = dc->clip.h;
|
2005-05-21 19:49:50 -07:00
|
|
|
|
2006-05-02 00:28:49 -07:00
|
|
|
data = dst->image->data;
|
|
|
|
dstw = dst->image->w;
|
2005-05-21 19:49:50 -07:00
|
|
|
|
2006-05-02 00:28:49 -07:00
|
|
|
data += (dstw * cly) + clx;
|
|
|
|
x0 -= clx;
|
|
|
|
y0 -= cly;
|
|
|
|
x1 -= clx;
|
|
|
|
y1 -= cly;
|
2002-11-08 00:02:15 -08:00
|
|
|
|
2006-05-02 00:28:49 -07:00
|
|
|
/* shallow: x-parametric */
|
|
|
|
if ((dy < dx) || (dy < -dx))
|
2002-11-08 00:02:15 -08:00
|
|
|
{
|
2006-05-02 00:28:49 -07:00
|
|
|
SETUP_LINE_SHALLOW
|
|
|
|
|
|
|
|
while (px < rx)
|
2002-11-08 00:02:15 -08:00
|
|
|
{
|
2006-05-02 00:28:49 -07:00
|
|
|
DATA8 aa;
|
|
|
|
|
|
|
|
y = (yy >> 16);
|
|
|
|
if (prev_y != y)
|
|
|
|
{
|
|
|
|
prev_y = y;
|
|
|
|
p += dh;
|
|
|
|
py += dely;
|
|
|
|
}
|
|
|
|
if (!p1_in)
|
|
|
|
{
|
|
|
|
if ((py < -1) && (dely < 0)) return;
|
|
|
|
if ((py > by) && (dely > 0)) return;
|
|
|
|
}
|
|
|
|
if ((unsigned)(px) < clw)
|
|
|
|
{
|
|
|
|
aa = ((yy - (y << 16)) >> 8);
|
|
|
|
if ((unsigned)(py) < clh)
|
|
|
|
pfunc(0, 255 - aa, color, p);
|
|
|
|
if ((unsigned)(py + 1) < clh)
|
|
|
|
pfunc(0, aa, color, p + dstw);
|
|
|
|
}
|
|
|
|
yy += dyy;
|
|
|
|
px++;
|
|
|
|
p++;
|
2002-11-08 00:02:15 -08:00
|
|
|
}
|
2006-05-02 00:28:49 -07:00
|
|
|
return;
|
2002-11-08 00:02:15 -08:00
|
|
|
}
|
2006-05-02 00:28:49 -07:00
|
|
|
|
|
|
|
/* steep: y-parametric */
|
|
|
|
|
|
|
|
SETUP_LINE_STEEP
|
|
|
|
|
|
|
|
while (py < by)
|
2002-11-08 00:02:15 -08:00
|
|
|
{
|
2006-05-02 00:28:49 -07:00
|
|
|
DATA8 aa;
|
|
|
|
|
|
|
|
x = (xx >> 16);
|
|
|
|
if (prev_x != x)
|
2002-11-08 00:02:15 -08:00
|
|
|
{
|
2006-05-02 00:28:49 -07:00
|
|
|
prev_x = x;
|
|
|
|
px += delx;
|
|
|
|
p += delx;
|
2002-11-08 00:02:15 -08:00
|
|
|
}
|
2006-05-02 00:28:49 -07:00
|
|
|
if (!p1_in)
|
|
|
|
{
|
|
|
|
if ((px < -1) && (delx < 0)) return;
|
|
|
|
if ((px > rx) && (delx > 0)) return;
|
|
|
|
}
|
|
|
|
if ((unsigned)(py) < clh)
|
2002-11-08 00:02:15 -08:00
|
|
|
{
|
2006-05-02 00:28:49 -07:00
|
|
|
aa = ((xx - (x << 16)) >> 8);
|
|
|
|
if ((unsigned)(px) < clw)
|
|
|
|
pfunc(0, 255 - aa, color, p);
|
|
|
|
if ((unsigned)(px + 1) < clw)
|
|
|
|
pfunc(0, aa, color, p + 1);
|
2002-11-08 00:02:15 -08:00
|
|
|
}
|
2006-05-02 00:28:49 -07:00
|
|
|
xx += dxx;
|
|
|
|
py++;
|
|
|
|
p += dstw;
|
2002-11-08 00:02:15 -08:00
|
|
|
}
|
|
|
|
}
|