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efl_ui_textpath: mathmatical calculations 

Summary: Reduce number of sqrt calls.

Reviewers: cedric, raster, bu5hm4n, vtorri, woohyun, Hermet

Subscribers: vtorri, bu5hm4n, raster, cedric, #reviewers, #committers

Tags: #efl

Maniphest Tasks: T8747

Differential Revision: https://phab.enlightenment.org/D11949
This commit is contained in:
Ali Alzyod 2021-01-29 11:53:15 +02:00 committed by ali-alzyod
parent e138962dd7
commit 39c305cf86
1 changed files with 6 additions and 4 deletions
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10
src/lib/elementary/efl_ui_textpath.c
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@ -264,7 +264,7 @@ static void
_text_on_line_draw(Efl_Ui_Textpath_Data *pd, int w1, int w2, int cmp, Evas_Map *map, Efl_Ui_Textpath_Line line)
{
double x1, x2, y1, y2;
double line_len, len, sina, cosa;
double line_len_2, line_len, len, sina, cosa;
Eina_Rect r;
x1 = line.start.x;
@ -272,15 +272,17 @@ _text_on_line_draw(Efl_Ui_Textpath_Data *pd, int w1, int w2, int cmp, Evas_Map *
x2 = line.end.x;
y2 = line.end.y;
line_len = sqrt((x2 - x1)*(x2 - x1) + (y2 - y1)*(y2 - y1));
line_len_2 = (x2 - x1)*(x2 - x1) + (y2 - y1)*(y2 - y1);
len = w2 - w1;
if (line_len > len)
if (line_len_2 > (len * len))
{
line_len = sqrt(line_len_2);
x2 = x1 + len * (x2 - x1) / line_len;
y2 = y1 + len * (y2 - y1) / line_len;
line_len_2 = (x2 - x1)*(x2 - x1) + (y2 - y1)*(y2 - y1);
}
len = sqrt((x2 - x1)*(x2 - x1) + (y2 - y1)*(y2 - y1));
len = sqrt(line_len_2);
sina = (y2 - y1) / len;
cosa = (x2 - x1) / len;