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Merge pull request #598 from jrassa/nanosvg-update
update nanosvg to latest version
This commit is contained in:
Jools Wills
GitHub
commit
4729de9fe9
282
external/nanosvg/nanosvg.h
vendored
282
external/nanosvg/nanosvg.h
vendored
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@ -29,9 +29,11 @@
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#ifndef NANOSVG_H
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#define NANOSVG_H
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#ifndef NANOSVG_CPLUSPLUS
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#ifdef __cplusplus
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extern "C" {
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#endif
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#endif
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// NanoSVG is a simple stupid single-header-file SVG parse. The output of the parser is a list of cubic bezier shapes.
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//
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@ -45,15 +47,15 @@ extern "C" {
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// NanoSVG can return the paths in few different units. For example if you want to render an image, you may choose
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// to get the paths in pixels, or if you are feeding the data into a CNC-cutter, you may want to use millimeters.
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//
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// The units passed to NanoVG should be one of: 'px', 'pt', 'pc' 'mm', 'cm', or 'in'.
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// The units passed to NanoSVG should be one of: 'px', 'pt', 'pc' 'mm', 'cm', or 'in'.
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// DPI (dots-per-inch) controls how the unit conversion is done.
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//
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// If you don't know or care about the units stuff, "px" and 96 should get you going.
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/* Example Usage:
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// Load
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NSVGImage* image;
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// Load SVG
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NSVGimage* image;
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image = nsvgParseFromFile("test.svg", "px", 96);
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printf("size: %f x %f\n", image->width, image->height);
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// Use...
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@ -73,30 +75,30 @@ enum NSVGpaintType {
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NSVG_PAINT_NONE = 0,
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NSVG_PAINT_COLOR = 1,
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NSVG_PAINT_LINEAR_GRADIENT = 2,
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NSVG_PAINT_RADIAL_GRADIENT = 3,
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NSVG_PAINT_RADIAL_GRADIENT = 3
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};
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enum NSVGspreadType {
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NSVG_SPREAD_PAD = 0,
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NSVG_SPREAD_REFLECT = 1,
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NSVG_SPREAD_REPEAT = 2,
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NSVG_SPREAD_REPEAT = 2
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};
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enum NSVGlineJoin {
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NSVG_JOIN_MITER = 0,
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NSVG_JOIN_ROUND = 1,
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NSVG_JOIN_BEVEL = 2,
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NSVG_JOIN_BEVEL = 2
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};
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enum NSVGlineCap {
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NSVG_CAP_BUTT = 0,
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NSVG_CAP_ROUND = 1,
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NSVG_CAP_SQUARE = 2,
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NSVG_CAP_SQUARE = 2
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};
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enum NSVGfillRule {
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NSVG_FILLRULE_NONZERO = 0,
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NSVG_FILLRULE_EVENODD = 1,
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NSVG_FILLRULE_EVENODD = 1
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};
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enum NSVGflags {
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@ -145,6 +147,7 @@ typedef struct NSVGshape
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char strokeDashCount; // Number of dash values in dash array.
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char strokeLineJoin; // Stroke join type.
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char strokeLineCap; // Stroke cap type.
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float miterLimit; // Miter limit
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char fillRule; // Fill rule, see NSVGfillRule.
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unsigned char flags; // Logical or of NSVG_FLAGS_* flags
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float bounds[4]; // Tight bounding box of the shape [minx,miny,maxx,maxy].
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@ -166,11 +169,16 @@ NSVGimage* nsvgParseFromFile(const char* filename, const char* units, float dpi)
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// Important note: changes the string.
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NSVGimage* nsvgParse(char* input, const char* units, float dpi);
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// Deletes list of paths.
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// Duplicates a path.
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NSVGpath* nsvgDuplicatePath(NSVGpath* p);
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// Deletes an image.
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void nsvgDelete(NSVGimage* image);
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#ifndef NANOSVG_CPLUSPLUS
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#ifdef __cplusplus
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};
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}
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#endif
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#endif
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#endif // NANOSVG_H
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@ -182,7 +190,7 @@ void nsvgDelete(NSVGimage* image);
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#include <math.h>
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#define NSVG_PI (3.14159265358979323846264338327f)
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#define NSVG_KAPPA90 (0.5522847493f) // Lenght proportional to radius of a cubic bezier handle for 90deg arcs.
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#define NSVG_KAPPA90 (0.5522847493f) // Length proportional to radius of a cubic bezier handle for 90deg arcs.
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#define NSVG_ALIGN_MIN 0
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#define NSVG_ALIGN_MID 1
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@ -195,7 +203,7 @@ void nsvgDelete(NSVGimage* image);
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#define NSVG_RGB(r, g, b) (((unsigned int)r) | ((unsigned int)g << 8) | ((unsigned int)b << 16))
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#ifdef _MSC_VER
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#pragma warning (disable: 4996) // Switch off security warnings
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#pragma warning (disable: 4996) // Switch off security warnings
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#pragma warning (disable: 4100) // Switch off unreferenced formal parameter warnings
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#ifdef __cplusplus
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#define NSVG_INLINE inline
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@ -203,7 +211,7 @@ void nsvgDelete(NSVGimage* image);
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#define NSVG_INLINE
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#endif
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#else
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#define NSVG_INLINE inline
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#define NSVG_INLINE inline
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#endif
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@ -214,7 +222,7 @@ static int nsvg__isspace(char c)
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static int nsvg__isdigit(char c)
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{
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return strchr("0123456789", c) != 0;
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return c >= '0' && c <= '9';
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}
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static int nsvg__isnum(char c)
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@ -278,6 +286,9 @@ static void nsvg__parseElement(char* s,
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// Get attribs
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while (!end && *s && nattr < NSVG_XML_MAX_ATTRIBS-3) {
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char* name = NULL;
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char* value = NULL;
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// Skip white space before the attrib name
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while (*s && nsvg__isspace(*s)) s++;
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if (!*s) break;
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@ -285,7 +296,7 @@ static void nsvg__parseElement(char* s,
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end = 1;
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break;
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}
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attr[nattr++] = s;
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name = s;
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// Find end of the attrib name.
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while (*s && !nsvg__isspace(*s) && *s != '=') s++;
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if (*s) { *s++ = '\0'; }
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@ -295,9 +306,15 @@ static void nsvg__parseElement(char* s,
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quote = *s;
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s++;
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// Store value and find the end of it.
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attr[nattr++] = s;
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value = s;
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while (*s && *s != quote) s++;
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if (*s) { *s++ = '\0'; }
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// Store only well formed attributes
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if (name && value) {
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attr[nattr++] = name;
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attr[nattr++] = value;
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}
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}
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// List terminator
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@ -348,7 +365,7 @@ int nsvg__parseXML(char* input,
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enum NSVGgradientUnits {
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NSVG_USER_SPACE = 0,
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NSVG_OBJECT_SPACE = 1,
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NSVG_OBJECT_SPACE = 1
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};
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#define NSVG_MAX_DASHES 8
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@ -363,7 +380,7 @@ enum NSVGunits {
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NSVG_UNITS_IN,
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NSVG_UNITS_PERCENT,
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NSVG_UNITS_EM,
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NSVG_UNITS_EX,
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NSVG_UNITS_EX
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};
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typedef struct NSVGcoordinate {
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@ -413,6 +430,7 @@ typedef struct NSVGattrib
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int strokeDashCount;
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char strokeLineJoin;
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char strokeLineCap;
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float miterLimit;
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char fillRule;
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float fontSize;
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unsigned int stopColor;
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@ -433,6 +451,7 @@ typedef struct NSVGparser
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NSVGpath* plist;
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NSVGimage* image;
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NSVGgradientData* gradients;
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NSVGshape* shapesTail;
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float viewMinx, viewMiny, viewWidth, viewHeight;
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int alignX, alignY, alignType;
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float dpi;
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@ -620,13 +639,14 @@ static NSVGparser* nsvg__createParser()
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p->attr[0].strokeWidth = 1;
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p->attr[0].strokeLineJoin = NSVG_JOIN_MITER;
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p->attr[0].strokeLineCap = NSVG_CAP_BUTT;
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p->attr[0].miterLimit = 4;
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p->attr[0].fillRule = NSVG_FILLRULE_NONZERO;
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p->attr[0].hasFill = 1;
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p->attr[0].visible = 1;
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return p;
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error:
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error:
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if (p) {
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if (p->image) free(p->image);
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free(p);
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@ -918,7 +938,7 @@ static void nsvg__addShape(NSVGparser* p)
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{
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NSVGattrib* attr = nsvg__getAttr(p);
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float scale = 1.0f;
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NSVGshape *shape, *cur, *prev;
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NSVGshape* shape;
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NSVGpath* path;
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int i;
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@ -933,11 +953,12 @@ static void nsvg__addShape(NSVGparser* p)
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scale = nsvg__getAverageScale(attr->xform);
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shape->strokeWidth = attr->strokeWidth * scale;
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shape->strokeDashOffset = attr->strokeDashOffset * scale;
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shape->strokeDashCount = attr->strokeDashCount;
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shape->strokeDashCount = (char)attr->strokeDashCount;
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for (i = 0; i < attr->strokeDashCount; i++)
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shape->strokeDashArray[i] = attr->strokeDashArray[i] * scale;
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shape->strokeLineJoin = attr->strokeLineJoin;
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shape->strokeLineCap = attr->strokeLineCap;
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shape->miterLimit = attr->miterLimit;
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shape->fillRule = attr->fillRule;
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shape->opacity = attr->opacity;
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@ -993,20 +1014,15 @@ static void nsvg__addShape(NSVGparser* p)
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shape->flags = (attr->visible ? NSVG_FLAGS_VISIBLE : 0x00);
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// Add to tail
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prev = NULL;
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cur = p->image->shapes;
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while (cur != NULL) {
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prev = cur;
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cur = cur->next;
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}
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if (prev == NULL)
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if (p->image->shapes == NULL)
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p->image->shapes = shape;
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else
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prev->next = shape;
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p->shapesTail->next = shape;
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p->shapesTail = shape;
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return;
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error:
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error:
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if (shape) free(shape);
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}
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@ -1059,13 +1075,73 @@ static void nsvg__addPath(NSVGparser* p, char closed)
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return;
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error:
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error:
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if (path != NULL) {
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if (path->pts != NULL) free(path->pts);
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free(path);
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}
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}
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// We roll our own string to float because the std library one uses locale and messes things up.
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static double nsvg__atof(const char* s)
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{
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char* cur = (char*)s;
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char* end = NULL;
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double res = 0.0, sign = 1.0;
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long long intPart = 0, fracPart = 0;
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char hasIntPart = 0, hasFracPart = 0;
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// Parse optional sign
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if (*cur == '+') {
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cur++;
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} else if (*cur == '-') {
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sign = -1;
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cur++;
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}
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// Parse integer part
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if (nsvg__isdigit(*cur)) {
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// Parse digit sequence
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intPart = strtoll(cur, &end, 10);
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if (cur != end) {
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res = (double)intPart;
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hasIntPart = 1;
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cur = end;
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}
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}
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// Parse fractional part.
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if (*cur == '.') {
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cur++; // Skip '.'
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if (nsvg__isdigit(*cur)) {
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// Parse digit sequence
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fracPart = strtoll(cur, &end, 10);
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if (cur != end) {
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res += (double)fracPart / pow(10.0, (double)(end - cur));
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hasFracPart = 1;
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cur = end;
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}
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}
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}
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// A valid number should have integer or fractional part.
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if (!hasIntPart && !hasFracPart)
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return 0.0;
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// Parse optional exponent
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if (*cur == 'e' || *cur == 'E') {
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long expPart = 0;
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cur++; // skip 'E'
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expPart = strtol(cur, &end, 10); // Parse digit sequence with sign
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if (cur != end) {
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res *= pow(10.0, (double)expPart);
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}
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}
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return res * sign;
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}
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static const char* nsvg__parseNumber(const char* s, char* it, const int size)
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{
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const int last = size-1;
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@ -1092,7 +1168,7 @@ static const char* nsvg__parseNumber(const char* s, char* it, const int size)
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}
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}
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// exponent
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if (*s == 'e' || *s == 'E') {
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if ((*s == 'e' || *s == 'E') && (s[1] != 'm' && s[1] != 'x')) {
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if (i < last) it[i++] = *s;
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s++;
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if (*s == '-' || *s == '+') {
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@ -1167,19 +1243,19 @@ typedef struct NSVGNamedColor {
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NSVGNamedColor nsvg__colors[] = {
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{ "red", NSVG_RGB(255, 0, 0) },
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{ "green", NSVG_RGB( 0, 128, 0) },
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{ "blue", NSVG_RGB( 0, 0, 255) },
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{ "yellow", NSVG_RGB(255, 255, 0) },
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{ "cyan", NSVG_RGB( 0, 255, 255) },
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{ "magenta", NSVG_RGB(255, 0, 255) },
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{ "black", NSVG_RGB( 0, 0, 0) },
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{ "grey", NSVG_RGB(128, 128, 128) },
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{ "gray", NSVG_RGB(128, 128, 128) },
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{ "white", NSVG_RGB(255, 255, 255) },
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{ "red", NSVG_RGB(255, 0, 0) },
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{ "green", NSVG_RGB( 0, 128, 0) },
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{ "blue", NSVG_RGB( 0, 0, 255) },
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{ "yellow", NSVG_RGB(255, 255, 0) },
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{ "cyan", NSVG_RGB( 0, 255, 255) },
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{ "magenta", NSVG_RGB(255, 0, 255) },
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{ "black", NSVG_RGB( 0, 0, 0) },
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{ "grey", NSVG_RGB(128, 128, 128) },
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{ "gray", NSVG_RGB(128, 128, 128) },
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{ "white", NSVG_RGB(255, 255, 255) },
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#ifdef NANOSVG_ALL_COLOR_KEYWORDS
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{ "aliceblue", NSVG_RGB(240, 248, 255) },
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{ "aliceblue", NSVG_RGB(240, 248, 255) },
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{ "antiquewhite", NSVG_RGB(250, 235, 215) },
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{ "aqua", NSVG_RGB( 0, 255, 255) },
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{ "aquamarine", NSVG_RGB(127, 255, 212) },
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@ -1346,13 +1422,19 @@ static unsigned int nsvg__parseColor(const char* str)
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static float nsvg__parseOpacity(const char* str)
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{
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float val = 0;
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sscanf(str, "%f", &val);
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float val = nsvg__atof(str);
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if (val < 0.0f) val = 0.0f;
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if (val > 1.0f) val = 1.0f;
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return val;
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}
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static float nsvg__parseMiterLimit(const char* str)
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{
|
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float val = nsvg__atof(str);
|
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if (val < 0.0f) val = 0.0f;
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return val;
|
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}
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static int nsvg__parseUnits(const char* units)
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{
|
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if (units[0] == 'p' && units[1] == 'x')
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@ -1379,9 +1461,9 @@ static int nsvg__parseUnits(const char* units)
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static NSVGcoordinate nsvg__parseCoordinateRaw(const char* str)
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{
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NSVGcoordinate coord = {0, NSVG_UNITS_USER};
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char units[32]="";
|
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sscanf(str, "%f%s", &coord.value, units);
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coord.units = nsvg__parseUnits(units);
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char buf[64];
|
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coord.units = nsvg__parseUnits(nsvg__parseNumber(str, buf, 64));
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coord.value = nsvg__atof(buf);
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return coord;
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}
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@ -1417,7 +1499,7 @@ static int nsvg__parseTransformArgs(const char* str, float* args, int maxNa, int
|
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if (*ptr == '-' || *ptr == '+' || *ptr == '.' || nsvg__isdigit(*ptr)) {
|
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if (*na >= maxNa) return 0;
|
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ptr = nsvg__parseNumber(ptr, it, 64);
|
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args[(*na)++] = (float)atof(it);
|
||||
args[(*na)++] = (float)nsvg__atof(it);
|
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} else {
|
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++ptr;
|
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}
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||||
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@ -1573,7 +1655,7 @@ static char nsvg__parseLineJoin(const char* str)
|
|||
else if (strcmp(str, "bevel") == 0)
|
||||
return NSVG_JOIN_BEVEL;
|
||||
// TODO: handle inherit.
|
||||
return NSVG_CAP_BUTT;
|
||||
return NSVG_JOIN_MITER;
|
||||
}
|
||||
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static char nsvg__parseFillRule(const char* str)
|
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|
|
@ -1679,6 +1761,8 @@ static int nsvg__parseAttr(NSVGparser* p, const char* name, const char* value)
|
|||
attr->strokeLineCap = nsvg__parseLineCap(value);
|
||||
} else if (strcmp(name, "stroke-linejoin") == 0) {
|
||||
attr->strokeLineJoin = nsvg__parseLineJoin(value);
|
||||
} else if (strcmp(name, "stroke-miterlimit") == 0) {
|
||||
attr->miterLimit = nsvg__parseMiterLimit(value);
|
||||
} else if (strcmp(name, "fill-rule") == 0) {
|
||||
attr->fillRule = nsvg__parseFillRule(value);
|
||||
} else if (strcmp(name, "font-size") == 0) {
|
||||
|
|
@ -1995,7 +2079,7 @@ static void nsvg__pathArcTo(NSVGparser* p, float* cpx, float* cpy, float* args,
|
|||
|
||||
rx = fabsf(args[0]); // y radius
|
||||
ry = fabsf(args[1]); // x radius
|
||||
rotx = args[2] / 180.0f * NSVG_PI; // x rotation engle
|
||||
rotx = args[2] / 180.0f * NSVG_PI; // x rotation angle
|
||||
fa = fabsf(args[3]) > 1e-6 ? 1 : 0; // Large arc
|
||||
fs = fabsf(args[4]) > 1e-6 ? 1 : 0; // Sweep direction
|
||||
x1 = *cpx; // start point
|
||||
|
|
@ -2060,13 +2144,10 @@ static void nsvg__pathArcTo(NSVGparser* p, float* cpx, float* cpy, float* args,
|
|||
// if (vecrat(ux,uy,vx,vy) <= -1.0f) da = NSVG_PI;
|
||||
// if (vecrat(ux,uy,vx,vy) >= 1.0f) da = 0;
|
||||
|
||||
if (fa) {
|
||||
// Choose large arc
|
||||
if (da > 0.0f)
|
||||
da = da - 2*NSVG_PI;
|
||||
else
|
||||
da = 2*NSVG_PI + da;
|
||||
}
|
||||
if (fs == 0 && da > 0)
|
||||
da -= 2 * NSVG_PI;
|
||||
else if (fs == 1 && da < 0)
|
||||
da += 2 * NSVG_PI;
|
||||
|
||||
// Approximate the arc using cubic spline segments.
|
||||
t[0] = cosrx; t[1] = sinrx;
|
||||
|
|
@ -2082,7 +2163,7 @@ static void nsvg__pathArcTo(NSVGparser* p, float* cpx, float* cpy, float* args,
|
|||
kappa = -kappa;
|
||||
|
||||
for (i = 0; i <= ndivs; i++) {
|
||||
a = a1 + da * (i/(float)ndivs);
|
||||
a = a1 + da * ((float)i/(float)ndivs);
|
||||
dx = cosf(a);
|
||||
dy = sinf(a);
|
||||
nsvg__xformPoint(&x, &y, dx*rx, dy*ry, t); // position
|
||||
|
|
@ -2136,7 +2217,7 @@ static void nsvg__parsePath(NSVGparser* p, const char** attr)
|
|||
if (!*item) break;
|
||||
if (nsvg__isnum(item[0])) {
|
||||
if (nargs < 10)
|
||||
args[nargs++] = (float)atof(item);
|
||||
args[nargs++] = (float)nsvg__atof(item);
|
||||
if (nargs >= rargs) {
|
||||
switch (cmd) {
|
||||
case 'm':
|
||||
|
|
@ -2145,23 +2226,23 @@ static void nsvg__parsePath(NSVGparser* p, const char** attr)
|
|||
// Moveto can be followed by multiple coordinate pairs,
|
||||
// which should be treated as linetos.
|
||||
cmd = (cmd == 'm') ? 'l' : 'L';
|
||||
rargs = nsvg__getArgsPerElement(cmd);
|
||||
cpx2 = cpx; cpy2 = cpy;
|
||||
rargs = nsvg__getArgsPerElement(cmd);
|
||||
cpx2 = cpx; cpy2 = cpy;
|
||||
break;
|
||||
case 'l':
|
||||
case 'L':
|
||||
nsvg__pathLineTo(p, &cpx, &cpy, args, cmd == 'l' ? 1 : 0);
|
||||
cpx2 = cpx; cpy2 = cpy;
|
||||
cpx2 = cpx; cpy2 = cpy;
|
||||
break;
|
||||
case 'H':
|
||||
case 'h':
|
||||
nsvg__pathHLineTo(p, &cpx, &cpy, args, cmd == 'h' ? 1 : 0);
|
||||
cpx2 = cpx; cpy2 = cpy;
|
||||
cpx2 = cpx; cpy2 = cpy;
|
||||
break;
|
||||
case 'V':
|
||||
case 'v':
|
||||
nsvg__pathVLineTo(p, &cpx, &cpy, args, cmd == 'v' ? 1 : 0);
|
||||
cpx2 = cpx; cpy2 = cpy;
|
||||
cpx2 = cpx; cpy2 = cpy;
|
||||
break;
|
||||
case 'C':
|
||||
case 'c':
|
||||
|
|
@ -2182,13 +2263,13 @@ static void nsvg__parsePath(NSVGparser* p, const char** attr)
|
|||
case 'A':
|
||||
case 'a':
|
||||
nsvg__pathArcTo(p, &cpx, &cpy, args, cmd == 'a' ? 1 : 0);
|
||||
cpx2 = cpx; cpy2 = cpy;
|
||||
cpx2 = cpx; cpy2 = cpy;
|
||||
break;
|
||||
default:
|
||||
if (nargs >= 2) {
|
||||
cpx = args[nargs-2];
|
||||
cpy = args[nargs-1];
|
||||
cpx2 = cpx; cpy2 = cpy;
|
||||
cpx2 = cpx; cpy2 = cpy;
|
||||
}
|
||||
break;
|
||||
}
|
||||
|
|
@ -2393,7 +2474,7 @@ static void nsvg__parsePoly(NSVGparser* p, const char** attr, int closeFlag)
|
|||
nargs = 0;
|
||||
while (*s) {
|
||||
s = nsvg__getNextPathItem(s, item);
|
||||
args[nargs++] = (float)atof(item);
|
||||
args[nargs++] = (float)nsvg__atof(item);
|
||||
if (nargs >= 2) {
|
||||
if (npts == 0)
|
||||
nsvg__moveTo(p, args[0], args[1]);
|
||||
|
|
@ -2418,11 +2499,26 @@ static void nsvg__parseSVG(NSVGparser* p, const char** attr)
|
|||
for (i = 0; attr[i]; i += 2) {
|
||||
if (!nsvg__parseAttr(p, attr[i], attr[i + 1])) {
|
||||
if (strcmp(attr[i], "width") == 0) {
|
||||
p->image->width = nsvg__parseCoordinate(p, attr[i + 1], 0.0f, 1.0f);
|
||||
p->image->width = nsvg__parseCoordinate(p, attr[i + 1], 0.0f, 0.0f);
|
||||
} else if (strcmp(attr[i], "height") == 0) {
|
||||
p->image->height = nsvg__parseCoordinate(p, attr[i + 1], 0.0f, 1.0f);
|
||||
p->image->height = nsvg__parseCoordinate(p, attr[i + 1], 0.0f, 0.0f);
|
||||
} else if (strcmp(attr[i], "viewBox") == 0) {
|
||||
sscanf(attr[i + 1], "%f%*[%%, \t]%f%*[%%, \t]%f%*[%%, \t]%f", &p->viewMinx, &p->viewMiny, &p->viewWidth, &p->viewHeight);
|
||||
const char *s = attr[i + 1];
|
||||
char buf[64];
|
||||
s = nsvg__parseNumber(s, buf, 64);
|
||||
p->viewMinx = nsvg__atof(buf);
|
||||
while (*s && (nsvg__isspace(*s) || *s == '%' || *s == ',')) s++;
|
||||
if (!*s) return;
|
||||
s = nsvg__parseNumber(s, buf, 64);
|
||||
p->viewMiny = nsvg__atof(buf);
|
||||
while (*s && (nsvg__isspace(*s) || *s == '%' || *s == ',')) s++;
|
||||
if (!*s) return;
|
||||
s = nsvg__parseNumber(s, buf, 64);
|
||||
p->viewWidth = nsvg__atof(buf);
|
||||
while (*s && (nsvg__isspace(*s) || *s == '%' || *s == ',')) s++;
|
||||
if (!*s) return;
|
||||
s = nsvg__parseNumber(s, buf, 64);
|
||||
p->viewHeight = nsvg__atof(buf);
|
||||
} else if (strcmp(attr[i], "preserveAspectRatio") == 0) {
|
||||
if (strstr(attr[i + 1], "none") != 0) {
|
||||
// No uniform scaling
|
||||
|
|
@ -2678,12 +2774,12 @@ static float nsvg__viewAlign(float content, float container, int type)
|
|||
|
||||
static void nsvg__scaleGradient(NSVGgradient* grad, float tx, float ty, float sx, float sy)
|
||||
{
|
||||
grad->xform[0] *= sx;
|
||||
grad->xform[1] *= sx;
|
||||
grad->xform[2] *= sy;
|
||||
grad->xform[3] *= sy;
|
||||
grad->xform[4] += tx*sx;
|
||||
grad->xform[5] += ty*sx;
|
||||
float t[6];
|
||||
nsvg__xformSetTranslation(t, tx, ty);
|
||||
nsvg__xformMultiply (grad->xform, t);
|
||||
|
||||
nsvg__xformSetScale(t, sx, sy);
|
||||
nsvg__xformMultiply (grad->xform, t);
|
||||
}
|
||||
|
||||
static void nsvg__scaleToViewbox(NSVGparser* p, const char* units)
|
||||
|
|
@ -2823,13 +2919,43 @@ NSVGimage* nsvgParseFromFile(const char* filename, const char* units, float dpi)
|
|||
|
||||
return image;
|
||||
|
||||
error:
|
||||
error:
|
||||
if (fp) fclose(fp);
|
||||
if (data) free(data);
|
||||
if (image) nsvgDelete(image);
|
||||
return NULL;
|
||||
}
|
||||
|
||||
NSVGpath* nsvgDuplicatePath(NSVGpath* p)
|
||||
{
|
||||
NSVGpath* res = NULL;
|
||||
|
||||
if (p == NULL)
|
||||
return NULL;
|
||||
|
||||
res = (NSVGpath*)malloc(sizeof(NSVGpath));
|
||||
if (res == NULL) goto error;
|
||||
memset(res, 0, sizeof(NSVGpath));
|
||||
|
||||
res->pts = (float*)malloc(p->npts*2*sizeof(float));
|
||||
if (res->pts == NULL) goto error;
|
||||
memcpy(res->pts, p->pts, p->npts * sizeof(float) * 2);
|
||||
res->npts = p->npts;
|
||||
|
||||
memcpy(res->bounds, p->bounds, sizeof(p->bounds));
|
||||
|
||||
res->closed = p->closed;
|
||||
|
||||
return res;
|
||||
|
||||
error:
|
||||
if (res != NULL) {
|
||||
free(res->pts);
|
||||
free(res);
|
||||
}
|
||||
return NULL;
|
||||
}
|
||||
|
||||
void nsvgDelete(NSVGimage* image)
|
||||
{
|
||||
NSVGshape *snext, *shape;
|
||||
|
|
|
|||
57
external/nanosvg/nanosvgrast.h
vendored
57
external/nanosvg/nanosvgrast.h
vendored
|
|
@ -25,15 +25,19 @@
|
|||
#ifndef NANOSVGRAST_H
|
||||
#define NANOSVGRAST_H
|
||||
|
||||
#ifndef NANOSVGRAST_CPLUSPLUS
|
||||
#ifdef __cplusplus
|
||||
extern "C" {
|
||||
#endif
|
||||
#endif
|
||||
|
||||
typedef struct NSVGrasterizer NSVGrasterizer;
|
||||
|
||||
/* Example Usage:
|
||||
// Load SVG
|
||||
struct SNVGImage* image = nsvgParseFromFile("test.svg.");
|
||||
NSVGimage* image;
|
||||
image = nsvgParseFromFile("test.svg", "px", 96);
|
||||
|
||||
// Create rasterizer (can be used to render multiple images).
|
||||
struct NSVGrasterizer* rast = nsvgCreateRasterizer();
|
||||
// Allocate memory for image
|
||||
|
|
@ -62,8 +66,10 @@ void nsvgRasterize(NSVGrasterizer* r,
|
|||
void nsvgDeleteRasterizer(NSVGrasterizer*);
|
||||
|
||||
|
||||
#ifndef NANOSVGRAST_CPLUSPLUS
|
||||
#ifdef __cplusplus
|
||||
};
|
||||
}
|
||||
#endif
|
||||
#endif
|
||||
|
||||
#endif // NANOSVGRAST_H
|
||||
|
|
@ -153,7 +159,7 @@ NSVGrasterizer* nsvgCreateRasterizer()
|
|||
|
||||
return r;
|
||||
|
||||
error:
|
||||
error:
|
||||
nsvgDeleteRasterizer(r);
|
||||
return NULL;
|
||||
}
|
||||
|
|
@ -238,7 +244,7 @@ static void nsvg__addPathPoint(NSVGrasterizer* r, float x, float y, int flags)
|
|||
if (r->npoints > 0) {
|
||||
pt = &r->points[r->npoints-1];
|
||||
if (nsvg__ptEquals(pt->x,pt->y, x,y, r->distTol)) {
|
||||
pt->flags |= flags;
|
||||
pt->flags = (unsigned char)(pt->flags | flags);
|
||||
return;
|
||||
}
|
||||
}
|
||||
|
|
@ -387,7 +393,7 @@ enum NSVGpointFlags
|
|||
{
|
||||
NSVG_PT_CORNER = 0x01,
|
||||
NSVG_PT_BEVEL = 0x02,
|
||||
NSVG_PT_LEFT = 0x04,
|
||||
NSVG_PT_LEFT = 0x04
|
||||
};
|
||||
|
||||
static void nsvg__initClosed(NSVGpoint* left, NSVGpoint* right, NSVGpoint* p0, NSVGpoint* p1, float lineWidth)
|
||||
|
|
@ -453,7 +459,7 @@ static void nsvg__roundCap(NSVGrasterizer* r, NSVGpoint* left, NSVGpoint* right,
|
|||
float lx = 0, ly = 0, rx = 0, ry = 0, prevx = 0, prevy = 0;
|
||||
|
||||
for (i = 0; i < ncap; i++) {
|
||||
float a = i/(float)(ncap-1)*NSVG_PI;
|
||||
float a = (float)i/(float)(ncap-1)*NSVG_PI;
|
||||
float ax = cosf(a) * w, ay = sinf(a) * w;
|
||||
float x = px - dlx*ax - dx*ay;
|
||||
float y = py - dly*ax - dy*ay;
|
||||
|
|
@ -550,7 +556,7 @@ static void nsvg__roundJoin(NSVGrasterizer* r, NSVGpoint* left, NSVGpoint* right
|
|||
if (da < NSVG_PI) da += NSVG_PI*2;
|
||||
if (da > NSVG_PI) da -= NSVG_PI*2;
|
||||
|
||||
n = (int)ceilf((nsvg__absf(da) / NSVG_PI) * ncap);
|
||||
n = (int)ceilf((nsvg__absf(da) / NSVG_PI) * (float)ncap);
|
||||
if (n < 2) n = 2;
|
||||
if (n > ncap) n = ncap;
|
||||
|
||||
|
|
@ -560,7 +566,7 @@ static void nsvg__roundJoin(NSVGrasterizer* r, NSVGpoint* left, NSVGpoint* right
|
|||
ry = right->y;
|
||||
|
||||
for (i = 0; i < n; i++) {
|
||||
float u = i/(float)(n-1);
|
||||
float u = (float)i/(float)(n-1);
|
||||
float a = a0 + u*da;
|
||||
float ax = cosf(a) * w, ay = sinf(a) * w;
|
||||
float lx1 = p1->x - ax, ly1 = p1->y - ay;
|
||||
|
|
@ -731,7 +737,7 @@ static void nsvg__flattenShapeStroke(NSVGrasterizer* r, NSVGshape* shape, float
|
|||
int i, j, closed;
|
||||
NSVGpath* path;
|
||||
NSVGpoint* p0, *p1;
|
||||
float miterLimit = 4;
|
||||
float miterLimit = shape->miterLimit;
|
||||
int lineJoin = shape->strokeLineJoin;
|
||||
int lineCap = shape->strokeLineCap;
|
||||
float lineWidth = shape->strokeWidth * scale;
|
||||
|
|
@ -770,7 +776,7 @@ static void nsvg__flattenShapeStroke(NSVGrasterizer* r, NSVGshape* shape, float
|
|||
nsvg__duplicatePoints(r);
|
||||
|
||||
r->npoints = 0;
|
||||
cur = r->points2[0];
|
||||
cur = r->points2[0];
|
||||
nsvg__appendPathPoint(r, cur);
|
||||
|
||||
// Figure out dash offset.
|
||||
|
|
@ -837,8 +843,8 @@ static void nsvg__flattenShapeStroke(NSVGrasterizer* r, NSVGshape* shape, float
|
|||
|
||||
static int nsvg__cmpEdge(const void *p, const void *q)
|
||||
{
|
||||
NSVGedge* a = (NSVGedge*)p;
|
||||
NSVGedge* b = (NSVGedge*)q;
|
||||
const NSVGedge* a = (const NSVGedge*)p;
|
||||
const NSVGedge* b = (const NSVGedge*)q;
|
||||
|
||||
if (a->y0 < b->y0) return -1;
|
||||
if (a->y0 > b->y0) return 1;
|
||||
|
|
@ -848,7 +854,7 @@ static int nsvg__cmpEdge(const void *p, const void *q)
|
|||
|
||||
static NSVGactiveEdge* nsvg__addActive(NSVGrasterizer* r, NSVGedge* e, float startPoint)
|
||||
{
|
||||
NSVGactiveEdge* z;
|
||||
NSVGactiveEdge* z;
|
||||
|
||||
if (r->freelist != NULL) {
|
||||
// Restore from freelist.
|
||||
|
|
@ -891,20 +897,20 @@ static void nsvg__fillScanline(unsigned char* scanline, int len, int x0, int x1,
|
|||
if (i < len && j >= 0) {
|
||||
if (i == j) {
|
||||
// x0,x1 are the same pixel, so compute combined coverage
|
||||
scanline[i] += (unsigned char)((x1 - x0) * maxWeight >> NSVG__FIXSHIFT);
|
||||
scanline[i] = (unsigned char)(scanline[i] + ((x1 - x0) * maxWeight >> NSVG__FIXSHIFT));
|
||||
} else {
|
||||
if (i >= 0) // add antialiasing for x0
|
||||
scanline[i] += (unsigned char)(((NSVG__FIX - (x0 & NSVG__FIXMASK)) * maxWeight) >> NSVG__FIXSHIFT);
|
||||
scanline[i] = (unsigned char)(scanline[i] + (((NSVG__FIX - (x0 & NSVG__FIXMASK)) * maxWeight) >> NSVG__FIXSHIFT));
|
||||
else
|
||||
i = -1; // clip
|
||||
|
||||
if (j < len) // add antialiasing for x1
|
||||
scanline[j] += (unsigned char)(((x1 & NSVG__FIXMASK) * maxWeight) >> NSVG__FIXSHIFT);
|
||||
scanline[j] = (unsigned char)(scanline[j] + (((x1 & NSVG__FIXMASK) * maxWeight) >> NSVG__FIXSHIFT));
|
||||
else
|
||||
j = len; // clip
|
||||
|
||||
for (++i; i < j; ++i) // fill pixels between x0 and x1
|
||||
scanline[i] += (unsigned char)maxWeight;
|
||||
scanline[i] = (unsigned char)(scanline[i] + maxWeight);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
@ -975,7 +981,7 @@ static unsigned int nsvg__applyOpacity(unsigned int c, float u)
|
|||
|
||||
static inline int nsvg__div255(int x)
|
||||
{
|
||||
return ((x+1) * 257) >> 16;
|
||||
return ((x+1) * 257) >> 16;
|
||||
}
|
||||
|
||||
static void nsvg__scanlineSolid(unsigned char* dst, int count, unsigned char* cover, int x, int y,
|
||||
|
|
@ -1020,8 +1026,8 @@ static void nsvg__scanlineSolid(unsigned char* dst, int count, unsigned char* co
|
|||
int i, cr, cg, cb, ca;
|
||||
unsigned int c;
|
||||
|
||||
fx = (x - tx) / scale;
|
||||
fy = (y - ty) / scale;
|
||||
fx = ((float)x - tx) / scale;
|
||||
fy = ((float)y - ty) / scale;
|
||||
dx = 1.0f / scale;
|
||||
|
||||
for (i = 0; i < count; i++) {
|
||||
|
|
@ -1065,8 +1071,8 @@ static void nsvg__scanlineSolid(unsigned char* dst, int count, unsigned char* co
|
|||
int i, cr, cg, cb, ca;
|
||||
unsigned int c;
|
||||
|
||||
fx = (x - tx) / scale;
|
||||
fy = (y - ty) / scale;
|
||||
fx = ((float)x - tx) / scale;
|
||||
fy = ((float)y - ty) / scale;
|
||||
dx = 1.0f / scale;
|
||||
|
||||
for (i = 0; i < count; i++) {
|
||||
|
|
@ -1120,7 +1126,7 @@ static void nsvg__rasterizeSortedEdges(NSVGrasterizer *r, float tx, float ty, fl
|
|||
xmax = 0;
|
||||
for (s = 0; s < NSVG__SUBSAMPLES; ++s) {
|
||||
// find center of pixel for this scanline
|
||||
float scany = y*NSVG__SUBSAMPLES + s + 0.5f;
|
||||
float scany = (float)(y*NSVG__SUBSAMPLES + s) + 0.5f;
|
||||
NSVGactiveEdge **step = &active;
|
||||
|
||||
// update all active edges;
|
||||
|
|
@ -1323,6 +1329,7 @@ static void dumpEdges(NSVGrasterizer* r, const char* name)
|
|||
if (r->nedges == 0) return;
|
||||
FILE* fp = fopen(name, "w");
|
||||
if (fp == NULL) return;
|
||||
|
||||
xmin = xmax = r->edges[0].x0;
|
||||
ymin = ymax = r->edges[0].y0;
|
||||
for (i = 0; i < r->nedges; i++) {
|
||||
|
|
@ -1336,16 +1343,20 @@ static void dumpEdges(NSVGrasterizer* r, const char* name)
|
|||
ymax = nsvg__maxf(ymax, e->y0);
|
||||
ymax = nsvg__maxf(ymax, e->y1);
|
||||
}
|
||||
|
||||
fprintf(fp, "<svg viewBox=\"%f %f %f %f\" xmlns=\"http://www.w3.org/2000/svg\">", xmin, ymin, (xmax - xmin), (ymax - ymin));
|
||||
|
||||
for (i = 0; i < r->nedges; i++) {
|
||||
e = &r->edges[i];
|
||||
fprintf(fp ,"<line x1=\"%f\" y1=\"%f\" x2=\"%f\" y2=\"%f\" style=\"stroke:#000;\" />", e->x0,e->y0, e->x1,e->y1);
|
||||
}
|
||||
|
||||
for (i = 0; i < r->npoints; i++) {
|
||||
if (i+1 < r->npoints)
|
||||
fprintf(fp ,"<line x1=\"%f\" y1=\"%f\" x2=\"%f\" y2=\"%f\" style=\"stroke:#f00;\" />", r->points[i].x, r->points[i].y, r->points[i+1].x, r->points[i+1].y);
|
||||
fprintf(fp ,"<circle cx=\"%f\" cy=\"%f\" r=\"1\" style=\"fill:%s;\" />", r->points[i].x, r->points[i].y, r->points[i].flags == 0 ? "#f00" : "#0f0");
|
||||
}
|
||||
|
||||
fprintf(fp, "</svg>");
|
||||
fclose(fp);
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in a new issue