forked from enlightenment/efl
elm textpath: reduces differences between actual pos and modified pos
Summary: In a previous patch, textpath was modified to use differences between prev/next values to decide next position. Actually, it improved rendering quality. But, the modified position could have a big difference from actual position. It caused a distortion problem. So, this patch was made for reducing that differences. @fix Test Plan: I'll attach some screenshots of before/after. 1. Modify text in text_ui_textpath.c to see distortion of text. ex) "―――――――――――――――――――..." 2. Build and install. 3. Run "ELM_SCALE=0.8 ELM_ACCEL=gl elementary_test -to efl.ui.textpath" Reviewers: Hermet, raster, cedric Reviewed By: Hermet Subscribers: #reviewers, #committers Tags: #efl Differential Revision: https://phab.enlightenment.org/D7418
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@ -178,7 +178,8 @@ _segment_draw(Efl_Ui_Textpath_Data *pd, int slice_no, double dt, double dist,
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/* Set mp1, mp2 position according to difference between
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* previous points and next points.
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* It improves smoothness of curve's slope changing. */
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* It improves smoothness of curve's slope changing.
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* But, it can cause huge differeces from actual positions. */
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mp0_x = *last_x1;
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mp0_y = *last_y1;
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mp1_x = *last_x1 + (int) round(vec1.x - vec0.x);
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@ -188,6 +189,12 @@ _segment_draw(Efl_Ui_Textpath_Data *pd, int slice_no, double dt, double dist,
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mp3_x = *last_x2;
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mp3_y = *last_y2;
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/* It reduces differences between actual position and modified position. */
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mp1_x += (int)round(((double)vec1.x - mp1_x) / 2);
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mp1_y += (int)round(((double)vec1.y - mp1_y) / 2);
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mp2_x += (int)round(((double)vec2.x - mp2_x) / 2);
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mp2_y += (int)round(((double)vec2.y - mp2_y) / 2);
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evas_map_point_coord_set(map, cmp + i * 4, mp0_x, mp0_y, 0);
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evas_map_point_coord_set(map, cmp + i * 4 + 1, mp1_x, mp1_y, 0);
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evas_map_point_coord_set(map, cmp + i * 4 + 2, mp2_x, mp2_y, 0);
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