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Diffstat (limited to 'src/3rdparty/freetype/docs/reference/ft2-outline_processing.html')
| -rw-r--r-- | src/3rdparty/freetype/docs/reference/ft2-outline_processing.html | 37 |
1 files changed, 25 insertions, 12 deletions
diff --git a/src/3rdparty/freetype/docs/reference/ft2-outline_processing.html b/src/3rdparty/freetype/docs/reference/ft2-outline_processing.html index d0b670ed96..c0c0bc8ea7 100644 --- a/src/3rdparty/freetype/docs/reference/ft2-outline_processing.html +++ b/src/3rdparty/freetype/docs/reference/ft2-outline_processing.html @@ -3,7 +3,7 @@ <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> -<title>FreeType-2.3.9 API Reference</title> +<title>FreeType-2.3.12 API Reference</title> <style type="text/css"> body { font-family: Verdana, Geneva, Arial, Helvetica, serif; color: #000000; @@ -35,7 +35,7 @@ <table align=center><tr><td><font size=-1>[<a href="ft2-index.html">Index</a>]</font></td> <td width="100%"></td> <td><font size=-1>[<a href="ft2-toc.html">TOC</a>]</font></td></tr></table> -<center><h1>FreeType-2.3.9 API Reference</h1></center> +<center><h1>FreeType-2.3.12 API Reference</h1></center> <center><h1> Outline Processing @@ -79,6 +79,11 @@ Defined in FT_IMAGE_H (freetype/ftimage.h). } <b>FT_Outline</b>; + /* Following limits must be consistent with */ + /* <b>FT_Outline</b>.{n_contours,n_points} */ +#define FT_OUTLINE_CONTOURS_MAX SHRT_MAX +#define FT_OUTLINE_POINTS_MAX SHRT_MAX + </pre></table><br> <table align=center width="87%"><tr><td> <p>This structure is used to describe an outline to the scan-line converter.</p> @@ -96,8 +101,11 @@ Defined in FT_IMAGE_H (freetype/ftimage.h). <p>A pointer to an array of ‘n_points’ <a href="ft2-basic_types.html#FT_Vector">FT_Vector</a> elements, giving the outline's point coordinates.</p> </td></tr> <tr valign=top><td><b>tags</b></td><td> -<p>A pointer to an array of ‘n_points’ chars, giving each outline point's type. If bit 0 is unset, the point is ‘off’ the curve, i.e., a Bézier control point, while it is ‘on’ when set.</p> +<p>A pointer to an array of ‘n_points’ chars, giving each outline point's type.</p> +<p>If bit 0 is unset, the point is ‘off’ the curve, i.e., a Bézier control point, while it is ‘on’ if set.</p> <p>Bit 1 is meaningful for ‘off’ points only. If set, it indicates a third-order Bézier arc control point; and a second-order control point if unset.</p> +<p>If bit 2 is set, bits 5-7 contain the drop-out mode (as defined in the OpenType specification; the value is the same as the argument to the SCANMODE instruction).</p> +<p>Bits 3 and 4 are reserved for internal purposes.</p> </td></tr> <tr valign=top><td><b>contours</b></td><td> <p>An array of ‘n_contours’ shorts, giving the end point of each contour within the outline. For example, the first contour is defined by the points ‘0’ to ‘contours[0]’, the second one is defined by the points ‘contours[0]+1’ to ‘contours[1]’, etc.</p> @@ -107,6 +115,9 @@ Defined in FT_IMAGE_H (freetype/ftimage.h). </td></tr> </table> </td></tr></table> +<table align=center width="87%" cellpadding=5><tr bgcolor="#EEEEFF"><td><em><b>note</b></em></td></tr><tr><td> +<p>The B/W rasterizer only checks bit 2 in the ‘tags’ array for the first point of each contour. The drop-out mode as given with <a href="ft2-outline_processing.html#FT_OUTLINE_FLAGS">FT_OUTLINE_IGNORE_DROPOUTS</a>, <a href="ft2-outline_processing.html#FT_OUTLINE_FLAGS">FT_OUTLINE_SMART_DROPOUTS</a>, and <a href="ft2-outline_processing.html#FT_OUTLINE_FLAGS">FT_OUTLINE_INCLUDE_STUBS</a> in ‘flags’ is then overridden.</p> +</td></tr></table> </td></tr></table> <hr width="75%"> <table align=center width="75%"><tr><td><font size=-2>[<a href="ft2-index.html">Index</a>]</font></td> @@ -146,7 +157,7 @@ Defined in FT_IMAGE_H (freetype/ftimage.h). </td></tr> <tr valign=top><td colspan=0><b>FT_OUTLINE_EVEN_ODD_FILL</b></td></tr> <tr valign=top><td></td><td> -<p>By default, outlines are filled using the non-zero winding rule. If set to 1, the outline will be filled using the even-odd fill rule (only works with the smooth raster).</p> +<p>By default, outlines are filled using the non-zero winding rule. If set to 1, the outline will be filled using the even-odd fill rule (only works with the smooth rasterizer).</p> </td></tr> <tr valign=top><td colspan=0><b>FT_OUTLINE_REVERSE_FILL</b></td></tr> <tr valign=top><td></td><td> @@ -154,15 +165,15 @@ Defined in FT_IMAGE_H (freetype/ftimage.h). </td></tr> <tr valign=top><td colspan=0><b>FT_OUTLINE_IGNORE_DROPOUTS</b></td></tr> <tr valign=top><td></td><td> -<p>By default, the scan converter will try to detect drop-outs in an outline and correct the glyph bitmap to ensure consistent shape continuity. If set, this flag hints the scan-line converter to ignore such cases.</p> +<p>By default, the scan converter will try to detect drop-outs in an outline and correct the glyph bitmap to ensure consistent shape continuity. If set, this flag hints the scan-line converter to ignore such cases. See below for more information.</p> </td></tr> <tr valign=top><td colspan=0><b>FT_OUTLINE_SMART_DROPOUTS</b></td></tr> <tr valign=top><td></td><td> -<p>Select smart dropout control. If unset, use simple dropout control. Ignored if <a href="ft2-outline_processing.html#FT_OUTLINE_FLAGS">FT_OUTLINE_IGNORE_DROPOUTS</a> is set.</p> +<p>Select smart dropout control. If unset, use simple dropout control. Ignored if <a href="ft2-outline_processing.html#FT_OUTLINE_FLAGS">FT_OUTLINE_IGNORE_DROPOUTS</a> is set. See below for more information.</p> </td></tr> <tr valign=top><td colspan=0><b>FT_OUTLINE_INCLUDE_STUBS</b></td></tr> <tr valign=top><td></td><td> -<p>If set, turn pixels on for ‘stubs’, otherwise exclude them. Ignored if <a href="ft2-outline_processing.html#FT_OUTLINE_FLAGS">FT_OUTLINE_IGNORE_DROPOUTS</a> is set.</p> +<p>If set, turn pixels on for ‘stubs’, otherwise exclude them. Ignored if <a href="ft2-outline_processing.html#FT_OUTLINE_FLAGS">FT_OUTLINE_IGNORE_DROPOUTS</a> is set. See below for more information.</p> </td></tr> <tr valign=top><td colspan=0><b>FT_OUTLINE_HIGH_PRECISION</b></td></tr> <tr valign=top><td></td><td> @@ -174,6 +185,8 @@ Defined in FT_IMAGE_H (freetype/ftimage.h). </table> </td></tr></table> <table align=center width="87%" cellpadding=5><tr bgcolor="#EEEEFF"><td><em><b>note</b></em></td></tr><tr><td> +<p>The flags <a href="ft2-outline_processing.html#FT_OUTLINE_FLAGS">FT_OUTLINE_IGNORE_DROPOUTS</a>, <a href="ft2-outline_processing.html#FT_OUTLINE_FLAGS">FT_OUTLINE_SMART_DROPOUTS</a>, and <a href="ft2-outline_processing.html#FT_OUTLINE_FLAGS">FT_OUTLINE_INCLUDE_STUBS</a> are ignored by the smooth rasterizer.</p> +<p>There exists a second mechanism to pass the drop-out mode to the B/W rasterizer; see the ‘tags’ field in <a href="ft2-outline_processing.html#FT_Outline">FT_Outline</a>.</p> <p>Please refer to the description of the ‘SCANTYPE’ instruction in the OpenType specification (in file ‘ttinst1.doc’) how simple drop-outs, smart drop-outs, and stubs are defined.</p> </td></tr></table> </td></tr></table> @@ -706,7 +719,7 @@ Defined in FT_IMAGE_H (freetype/ftimage.h). </pre></table><br> <table align=center width="87%"><tr><td> -<p>A function pointer type use to describe the signature of a ‘conic to’ function during outline walking/decomposition.</p> +<p>A function pointer type used to describe the signature of a ‘conic to’ function during outline walking or decomposition.</p> <p>A ‘conic to’ is emitted to indicate a second-order Bézier arc in the outline.</p> </td></tr></table><br> <table align=center width="87%" cellpadding=5><tr bgcolor="#EEEEFF"><td><em><b>input</b></em></td></tr><tr><td> @@ -749,7 +762,7 @@ Defined in FT_IMAGE_H (freetype/ftimage.h). </pre></table><br> <table align=center width="87%"><tr><td> -<p>A function pointer type used to describe the signature of a ‘cubic to’ function during outline walking/decomposition.</p> +<p>A function pointer type used to describe the signature of a ‘cubic to’ function during outline walking or decomposition.</p> <p>A ‘cubic to’ is emitted to indicate a third-order Bézier arc.</p> </td></tr></table><br> <table align=center width="87%" cellpadding=5><tr bgcolor="#EEEEFF"><td><em><b>input</b></em></td></tr><tr><td> @@ -799,7 +812,7 @@ Defined in FT_IMAGE_H (freetype/ftimage.h). </pre></table><br> <table align=center width="87%"><tr><td> -<p>A structure to hold various function pointers used during outline decomposition in order to emit segments, conic, and cubic Béziers, as well as ‘move to’ and ‘close to’ operations.</p> +<p>A structure to hold various function pointers used during outline decomposition in order to emit segments, conic, and cubic Béziers.</p> </td></tr></table><br> <table align=center width="87%" cellpadding=5><tr bgcolor="#EEEEFF"><td><em><b>fields</b></em></td></tr><tr><td> <p></p> @@ -830,7 +843,7 @@ Defined in FT_IMAGE_H (freetype/ftimage.h). x' = (x << shift) - delta y' = (x << shift) - delta </pre> -<p>Set the value of ‘shift’ and ‘delta’ to 0 to get the original point coordinates.</p> +<p>Set the values of ‘shift’ and ‘delta’ to 0 to get the original point coordinates.</p> </td></tr></table> </td></tr></table> <hr width="75%"> @@ -852,7 +865,7 @@ Defined in FT_OUTLINE_H (freetype/ftoutln.h). </pre></table><br> <table align=center width="87%"><tr><td> -<p>Walk over an outline's structure to decompose it into individual segments and Bézier arcs. This function is also able to emit ‘move to’ and ‘close to’ operations to indicate the start and end of new contours in the outline.</p> +<p>Walk over an outline's structure to decompose it into individual segments and Bézier arcs. This function also emits ‘move to’ operations to indicate the start of new contours in the outline.</p> </td></tr></table><br> <table align=center width="87%" cellpadding=5><tr bgcolor="#EEEEFF"><td><em><b>input</b></em></td></tr><tr><td> <p></p> |