#include "../gfxdevice.h"
#include "../mem.h"
#include "poly.h"
+#include "convert.h"
/* factor that determines into how many line fragments a spline is converted */
#define SUBFRACTION (2.4)
-static edge_t*edge_new(int x1, int y1, int x2, int y2)
-{
- edge_t*s = rfx_calloc(sizeof(edge_t));
- s->a.x = x1;
- s->a.y = y1;
- s->b.x = x2;
- s->b.y = y2;
- return s;
-}
-
-static inline int32_t convert_coord(double x)
+static inline int32_t convert_coord(double x, double z)
{
/* we clamp to 31 bit instead of 32 bit because we use
a (x1-x2) shortcut when comparing coordinates
*/
+ x *= z;
if(x < -0x40000000) x = -0x40000000;
if(x > 0x3fffffff) x = 0x3fffffff;
return ceil(x);
}
-static inline void gfxpoly_add_edge(gfxpoly_t*poly, double _x1, double _y1, double _x2, double _y2)
-{
- int x1 = convert_coord(_x1);
- int y1 = convert_coord(_y1);
- int x2 = convert_coord(_x2);
- int y2 = convert_coord(_y2);
-
- if(x1!=x2 || y1!=y2) {
- edge_t*s = edge_new(x1, y1, x2, y2);
- s->next = poly->edges;
- poly->edges = s;
- }
-}
-
-static void convert_gfxline(gfxline_t*line, void*data, void(*moveto)(void*data, double x, double y), void(*lineto)(void*data, double x, double y), void(*setgridsize)(void*data, double g))
+static void convert_gfxline(gfxline_t*line, polywriter_t*w, double gridsize)
{
assert(!line || line[0].type == gfx_moveTo);
double lastx=0,lasty=0;
+ double z = 1.0 / gridsize;
while(line) {
if(line->type == gfx_moveTo) {
if(line->next && line->next->type != gfx_moveTo && (line->x!=lastx || line->y!=lasty)) {
- moveto(data, line->x, line->y);
+ w->moveto(w, convert_coord(line->x,z), convert_coord(line->y,z));
}
} else if(line->type == gfx_lineTo) {
- lineto(data, line->x, line->y);
+ w->lineto(w, convert_coord(line->x,z), convert_coord(line->y,z));
} else if(line->type == gfx_splineTo) {
int parts = (int)(sqrt(fabs(line->x-2*line->sx+lastx) +
fabs(line->y-2*line->sy+lasty))*SUBFRACTION);
double t = (double)i*stepsize;
double sx = (line->x*t*t + 2*line->sx*t*(1-t) + lastx*(1-t)*(1-t));
double sy = (line->y*t*t + 2*line->sy*t*(1-t) + lasty*(1-t)*(1-t));
- lineto(data, sx, sy);
+ w->lineto(w, convert_coord(sx,z), convert_coord(sy,z));
}
- lineto(data, line->x, line->y);
+ w->lineto(w, convert_coord(line->x,z), convert_coord(line->y,z));
}
lastx = line->x;
lasty = line->y;
}
}
-static void convert_file(const char*filename, void*data, void(*moveto)(void*data, double x, double y), void(*lineto)(void*data, double x, double y),void(*setgridsize)(void*data, double gridsize))
+static void convert_file(const char*filename, polywriter_t*w, double gridsize)
{
FILE*fi = fopen(filename, "rb");
if(!fi) {
perror(filename);
}
+ double z = 1.0 / gridsize;
int count = 0;
double g = 0;
double lastx=0,lasty=0;
char s[256];
if(sscanf(line, "%lf %lf %s", &x, &y, &s) == 3) {
if(s && !strcmp(s,"moveto")) {
- moveto(data, x, y);
+ w->moveto(w, convert_coord(x,z), convert_coord(y,z));
count++;
} else if(s && !strcmp(s,"lineto")) {
- lineto(data, x, y);
+ w->lineto(w, convert_coord(x,z), convert_coord(y,z));
count++;
} else {
fprintf(stderr, "invalid command: %s\n", s);
}
} else if(sscanf(line, "%% gridsize %lf", &g) == 1) {
- setgridsize(data, g);
+ gridsize = g;
+ z = 1.0 / gridsize;
+ w->setgridsize(w, g);
}
free(line);
}
}
}
-typedef struct _stdpoly {
- gfxpoly_t*poly;
- double lastx,lasty;
- double z;
-} stdpoly_t;
-static void stdmoveto(void*data, double x, double y)
-{
- stdpoly_t*d = (stdpoly_t*)data;
- x *= d->z;
- y *= d->z;
- d->lastx = x;d->lasty = y;
-}
-static void stdlineto(void*data, double x, double y)
-{
- stdpoly_t*d = (stdpoly_t*)data;
- x *= d->z;
- y *= d->z;
- gfxpoly_add_edge(d->poly, d->lastx, d->lasty, x, y);
- d->lastx = x;d->lasty = y;
-}
-static void stdsetgridsize(void*data, double gridsize)
-{
- stdpoly_t*d = (stdpoly_t*)data;
- d->poly->gridsize = gridsize;
-}
-gfxpoly_t* gfxpoly_from_gfxline(gfxline_t*line, double gridsize)
-{
- stdpoly_t data;
- data.poly = gfxpoly_new(gridsize);
- data.z = 1.0 / gridsize;
- data.lastx = data.lasty = 0;
- convert_gfxline(line, &data, stdmoveto, stdlineto, stdsetgridsize);
- return data.poly;
-}
-gfxpoly_t* gfxpoly_from_file(const char*filename, double gridsize)
-{
- stdpoly_t data;
- data.poly = gfxpoly_new(gridsize);
- data.z = 1.0 / gridsize;
- data.lastx = data.lasty = 0;
- convert_file(filename, &data, stdmoveto, stdlineto, stdsetgridsize);
- return data.poly;
-}
-
typedef struct _compactpoly {
- gfxcompactpoly_t*poly;
+ gfxpoly_t*poly;
point_t last;
- double z;
int strokes_size;
point_t*points;
int num_points;
int points_size;
segment_dir_t dir;
+ char new;
} compactpoly_t;
-void add_segment(compactpoly_t*data, point_t start, segment_dir_t dir)
+void finish_segment(compactpoly_t*data)
{
+ if(data->num_points <= 1)
+ return;
if(data->poly->num_strokes == data->strokes_size) {
data->strokes_size <<= 1;
assert(data->strokes_size > data->poly->num_strokes);
- data->poly->strokes = rfx_realloc(data->poly->strokes, data->strokes_size);
+ data->poly->strokes = rfx_realloc(data->poly->strokes, sizeof(gfxpolystroke_t)*data->strokes_size);
}
- data->poly->strokes[data->poly->num_strokes].dir = dir;
- data->points[0] = start;
- data->num_points = 1;
- data->dir = dir;
-}
-void finish_segment(compactpoly_t*data)
-{
- if(data->num_points <= 1)
- return;
point_t*p = malloc(sizeof(point_t)*data->num_points);
- data->poly->strokes[data->poly->num_strokes-1].points = p;
+ gfxpolystroke_t*s = &data->poly->strokes[data->poly->num_strokes];
+ s->num_points = data->num_points;
+ s->dir = data->dir;
+ s->points = p;
+ assert(data->dir != DIR_UNKNOWN);
if(data->dir == DIR_UP) {
int t;
int s = data->num_points;
} else {
memcpy(p, data->points, sizeof(point_t)*data->num_points);
}
+#ifdef CHECKS
+ int t;
+ for(t=0;t<data->num_points-1;t++) {
+ assert(p[t].y<=p[t+1].y);
+ }
+#endif
data->poly->num_strokes++;
}
-static void compactmoveto(void*_data, double _x, double _y)
+static void compactmoveto(polywriter_t*w, int32_t x, int32_t y)
{
- compactpoly_t*data = (compactpoly_t*)_data;
- data->dir = DIR_UNKNOWN;
+ compactpoly_t*data = (compactpoly_t*)w->internal;
point_t p;
- p.x = convert_coord(_x);
- p.y = convert_coord(_y);
+ p.x = x;
+ p.y = y;
+ if(p.x != data->last.x || p.y != data->last.y) {
+ data->new = 1;
+ }
data->last = p;
}
-static void compactlineto(void*_data, double _x, double _y)
+static void compactlineto(polywriter_t*w, int32_t x, int32_t y)
{
- compactpoly_t*data = (compactpoly_t*)_data;
+ compactpoly_t*data = (compactpoly_t*)w->internal;
point_t p;
- p.x = convert_coord(_x);
- p.y = convert_coord(_y);
+ p.x = x;
+ p.y = y;
+ if(p.x == data->last.x && p.y == data->last.y)
+ return;
+
if(p.y < data->last.y && data->dir != DIR_UP ||
- p.y > data->last.y && data->dir != DIR_DOWN) {
- data->dir = p.y > data->last.y ? DIR_DOWN : DIR_UP;
+ p.y > data->last.y && data->dir != DIR_DOWN ||
+ data->new) {
finish_segment(data);
- add_segment(data, data->last, data->dir);
+ data->dir = p.y > data->last.y ? DIR_DOWN : DIR_UP;
+ data->points[0] = data->last;
+ data->num_points = 1;
}
+
if(data->points_size == data->num_points) {
data->points_size <<= 1;
assert(data->points_size > data->num_points);
- data->points = rfx_realloc(data->points, data->points_size);
+ data->points = rfx_realloc(data->points, sizeof(point_t)*data->points_size);
}
data->points[data->num_points++] = p;
+ data->last = p;
}
-static void compactsetgridsize(void*data, double gridsize)
+static void compactsetgridsize(polywriter_t*w, double gridsize)
{
- compactpoly_t*d = (compactpoly_t*)data;
+ compactpoly_t*d = (compactpoly_t*)w->internal;
d->poly->gridsize = gridsize;
}
-static void compactinit(compactpoly_t*data, double gridsize)
+/*static int compare_stroke(const void*_s1, const void*_s2)
{
- data->poly = rfx_calloc(sizeof(gfxcompactpoly_t));
- data->poly->gridsize = gridsize;
- data->z = 1.0 / gridsize;
+ gfxpolystroke_t*s1 = (gfxpolystroke_t*)_s1;
+ gfxpolystroke_t*s2 = (gfxpolystroke_t*)_s2;
+ return s1->points[0].y - s2->points[0].y;
+}*/
+static void*compactfinish(polywriter_t*w)
+{
+ compactpoly_t*data = (compactpoly_t*)w->internal;
+ finish_segment(data);
+ data->poly->strokes = (gfxpolystroke_t*)rfx_realloc(data->poly->strokes, sizeof(gfxpolystroke_t)*data->poly->num_strokes);
+ //qsort(data->poly->strokes, data->poly->num_strokes, sizeof(gfxpolystroke_t), compare_stroke);
+ free(data->points);
+ gfxpoly_t*poly = data->poly;
+ free(w->internal);w->internal = 0;
+ return (void*)poly;
+}
+void gfxpolywriter_init(polywriter_t*w)
+{
+ w->moveto = compactmoveto;
+ w->lineto = compactlineto;
+ w->setgridsize = compactsetgridsize;
+ w->finish = compactfinish;
+ compactpoly_t*data = w->internal = rfx_calloc(sizeof(compactpoly_t));
+ data->poly = rfx_calloc(sizeof(gfxpoly_t));
+ data->poly->gridsize = 1.0;
data->last.x = data->last.y = 0;
data->strokes_size = 16;
data->num_points = 0;
data->points_size = 16;
+ data->new = 1;
+ data->dir = DIR_UNKNOWN;
data->points = (point_t*)rfx_alloc(sizeof(point_t)*data->points_size);
- data->poly->strokes = (gfxstroke_t*)rfx_alloc(sizeof(gfxstroke_t)*data->strokes_size);
+ data->poly->strokes = (gfxpolystroke_t*)rfx_alloc(sizeof(gfxpolystroke_t)*data->strokes_size);
}
-static gfxcompactpoly_t*compactfinish(compactpoly_t*data)
-{
- finish_segment(data);
- data->poly->strokes = rfx_realloc(data->poly->strokes, sizeof(gfxstroke_t)*data->poly->num_strokes);
- free(data->points);
- return data->poly;
-}
-gfxcompactpoly_t* gfxcompactpoly_from_gfxline(gfxline_t*line, double gridsize)
+
+gfxpoly_t* gfxpoly_from_gfxline(gfxline_t*line, double gridsize)
{
- compactpoly_t data;
- compactinit(&data, gridsize);
- data.poly->gridsize = gridsize;
- convert_gfxline(line, &data, compactmoveto, compactlineto, compactsetgridsize);
- return compactfinish(&data);
+ polywriter_t writer;
+ gfxpolywriter_init(&writer);
+ writer.setgridsize(&writer, gridsize);
+ convert_gfxline(line, &writer, gridsize);
+ return (gfxpoly_t*)writer.finish(&writer);
}
-gfxcompactpoly_t* gfxcompactpoly_from_file(const char*filename, double gridsize)
+gfxpoly_t* gfxpoly_from_file(const char*filename, double gridsize)
{
- compactpoly_t data;
- compactinit(&data, gridsize);
- data.poly->gridsize = gridsize;
- convert_file(filename, &data, compactmoveto, compactlineto, compactsetgridsize);
- return compactfinish(&data);
+ polywriter_t writer;
+ gfxpolywriter_init(&writer);
+ writer.setgridsize(&writer, gridsize);
+ convert_file(filename, &writer, gridsize);
+ return (gfxpoly_t*)writer.finish(&writer);
}
-void gfxcompactpoly_free(gfxcompactpoly_t*poly)
+void gfxpoly_destroy(gfxpoly_t*poly)
{
int t;
for(t=0;t<poly->num_strokes;t++) {
free(poly->strokes[t].points);
+ poly->strokes[t].points = 0;
}
free(poly->strokes);
free(poly);
git.asbjorn.biz / swftools.git / blobdiff