Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
#include <stdio.h>
+#include <stdlib.h>
#include <memory.h>
#include <math.h>
+#include <string.h>
#include <assert.h>
#include "gfxtools.h"
+#include "gfxfont.h"
typedef struct _linedraw_internal
{
static void linedraw_moveTo(gfxdrawer_t*d, gfxcoord_t x, gfxcoord_t y)
{
linedraw_internal_t*i = (linedraw_internal_t*)d->internal;
- gfxline_t*l = rfx_alloc(sizeof(gfxline_t));
+ gfxline_t*l = (gfxline_t*)rfx_alloc(sizeof(gfxline_t));
l->type = gfx_moveTo;
if((int)((d->x * 5120) == (int)(x * 5120)) &&
(int)((d->y * 5120) == (int)(y * 5120))) {
return;
}
+ l->sx = l->sy = 0;
d->x = l->x = x;
d->y = l->y = y;
l->next = 0;
static void linedraw_lineTo(gfxdrawer_t*d, gfxcoord_t x, gfxcoord_t y)
{
linedraw_internal_t*i = (linedraw_internal_t*)d->internal;
- gfxline_t*l = rfx_alloc(sizeof(gfxline_t));
+ gfxline_t*l = (gfxline_t*)rfx_alloc(sizeof(gfxline_t));
+
+ if(!i->start) {
+ /* starts with a line, not with a moveto. That needs we first
+ need an explicit moveto to (0,0) */
+ linedraw_moveTo(d, 0, 0);
+ }
+
l->type = gfx_lineTo;
d->x = l->x = x;
d->y = l->y = y;
+
l->next = 0;
if(i->next)
i->next->next = l;
static void linedraw_splineTo(gfxdrawer_t*d, gfxcoord_t sx, gfxcoord_t sy, gfxcoord_t x, gfxcoord_t y)
{
linedraw_internal_t*i = (linedraw_internal_t*)d->internal;
- gfxline_t*l = rfx_alloc(sizeof(gfxline_t));
+ gfxline_t*l = (gfxline_t*)rfx_alloc(sizeof(gfxline_t));
+
+ if(!i->start) {
+ /* starts with a line, not with a moveto. That needs we first
+ need an explicit moveto to (0,0) */
+ linedraw_moveTo(d, 0, 0);
+ }
+
l->type = gfx_splineTo;
d->x = l->x = x;
d->y = l->y = y;
void gfxdrawer_target_gfxline(gfxdrawer_t*d)
{
linedraw_internal_t*i = (linedraw_internal_t*)rfx_calloc(sizeof(linedraw_internal_t));
+ d->x = 0x7fffffff;
+ d->y = 0x7fffffff;
d->internal = i;
d->moveTo = linedraw_moveTo;
d->lineTo = linedraw_lineTo;
double x=0,y=0;
double linepos,nextpos;
char on;
- int apos;
+ int apos=0;
if(line && line->type != gfx_moveTo) {
fprintf(stderr, "gfxtool: outline doesn't start with a moveTo");
return;
}
- if(!r || r[0]<0 || phase<0) {
- fprintf(stderr, "gfxtool: invalid dashes");
+ if(!r || (r[0]<=0 && r[0]>-0.01)) {
+ // no dashing. just draw the thing
+ while(line) {
+ if(line->type == gfx_moveTo) {
+ d->moveTo(d, line->x, line->y);
+ } else if(line->type == gfx_lineTo) {
+ d->lineTo(d, line->x, line->y);
+ } else if(line->type == gfx_splineTo) {
+ d->splineTo(d, line->sx, line->sy, line->x, line->y);
+ }
+ line = line->next;
+ }
+ return;
+ }
+ if(r[0]<0 || phase<0) {
+ fprintf(stderr, "gfxtool: invalid (negative) dashes: %f, phase=%f", r[0], phase);
return;
}
+
for(;line;line=line->next) {
if(line->type == gfx_moveTo) {
d->moveTo(d, line->x, line->y);
gfxline_t*dest = 0;
gfxline_t*pos = 0;
while(line) {
- gfxline_t*n = rfx_calloc(sizeof(gfxline_t));
+ gfxline_t*n = (gfxline_t*)rfx_calloc(sizeof(gfxline_t));
*n = *line;
n->next = 0;
if(!pos) {
}
return dest;
}
+void gfxline_optimize(gfxline_t*line)
+{
+ gfxline_t*l = line;
+ /* step 1: convert splines to lines, where possible */
+ double x=0,y=0;
+ while(l) {
+ if(l->type == gfx_splineTo) {
+ double dx = l->x-x;
+ double dy = l->y-y;
+ double sx = l->sx-x;
+ double sy = l->sy-y;
+ if(fabs(dx*sy - dy*sx) < 0.000001 && (dx*sx + dy*sy) >= 0) {
+ l->type = gfx_lineTo;
+ }
+ }
+ x = l->x;
+ y = l->y;
+ l = l->next;
+ }
+ /* step 2: combine adjacent lines and splines, where possible */
+ l = line;
+ while(l && l->next) {
+ gfxline_t*next = l->next;
+ char combine = 0;
+ double sx=0,sy=0;
+ if(l->type == gfx_lineTo && next->type == gfx_lineTo) {
+ double dx = l->x-x;
+ double dy = l->y-y;
+ double nx = next->x-l->x;
+ double ny = next->y-l->y;
+ if(fabs(dx*ny - dy*nx) < 0.000001 && (dx*nx + dy*ny) >= 0) {
+ combine = 1;
+ }
+ } else if(l->type == gfx_splineTo && next->type == gfx_splineTo) {
+ /* TODO */
+ }
+ if(combine) {
+ l->next = next->next;
+ next->next = 0;
+ l->x = next->x;
+ l->y = next->y;
+ l->sx = sx;
+ l->sy = sy;
+ rfx_free(next);
+ } else {
+ x = l->x;
+ y = l->y;
+ l = l->next;
+ }
+ }
+}
gfxline_t* gfxtool_dash_line(gfxline_t*line, float*dashes, float phase)
{
void gfxline_show(gfxline_t*l, FILE*fi)
{
while(l) {
- if(l->type == moveTo) {
+ if(l->type == gfx_moveTo) {
fprintf(fi, "moveTo %.2f,%.2f\n", l->x, l->y);
}
- if(l->type == lineTo) {
+ if(l->type == gfx_lineTo) {
fprintf(fi, "lineTo %.2f,%.2f\n", l->x, l->y);
}
- if(l->type == splineTo) {
+ if(l->type == gfx_splineTo) {
fprintf(fi, "splineTo %.2f,%.2f %.2f,%.2f\n", l->sx, l->sy, l->x, l->y);
}
l = l->next;
void gfxline_free(gfxline_t*l)
{
- gfxline_t*next;
- while(l) {
- next = l->next;
- l->next = 0;
+ if(l && (l+1) == l->next) {
+ /* flattened */
rfx_free(l);
- l = next;
+ } else {
+ gfxline_t*next;
+ while(l) {
+ next = l->next;
+ l->next = 0;
+ rfx_free(l);
+ l = next;
+ }
}
}
return box;
}
+void gfxbbox_intersect(gfxbbox_t*box1, gfxbbox_t*box2)
+{
+ if(box2->xmin > box1->xmin)
+ box1->xmin = box2->xmin;
+ if(box2->ymin > box1->ymin)
+ box1->ymin = box2->ymin;
+ if(box2->xmax < box1->xmax)
+ box1->xmax = box2->xmax;
+ if(box2->ymax > box1->ymax)
+ box1->ymax = box2->ymax;
+ if(box1->xmin > box1->xmax)
+ box1->xmax = box1->xmin;
+ if(box1->ymin > box1->ymax)
+ box1->ymax = box1->ymin;
+}
+
gfxbbox_t gfxline_getbbox(gfxline_t*line)
{
gfxcoord_t x=0,y=0;
fprintf(fi, "%f %f | %f\n", m->m00, m->m10, m->tx);
fprintf(fi, "%f %f | %f\n", m->m01, m->m11, m->ty);
}
+
+void gfxmatrix_transform(gfxmatrix_t*m, double* v, double*dest)
+{
+ dest[0] = m->m00*v[0] + m->m10*v[1] + m->tx;
+ dest[1] = m->m01*v[0] + m->m11*v[1] + m->ty;
+}
+void gfxmatrix_invert(gfxmatrix_t*m, gfxmatrix_t*dest)
+{
+ double det = m->m00 * m->m11 - m->m10 * m->m01;
+ if(!det) {
+ memset(dest, 0, sizeof(gfxmatrix_t));
+ return;
+ }
+ det = 1/det;
+ dest->m00 = m->m11 * det;
+ dest->m01 = -m->m01 * det;
+ dest->m10 = -m->m10 * det;
+ dest->m11 = m->m00 * det;
+ dest->tx = -(dest->m00 * m->tx + dest->m10 * m->ty);
+ dest->ty = -(dest->m01 * m->tx + dest->m11 * m->ty);
+}
+void gfxmatrix_unit(gfxmatrix_t*m)
+{
+ memset(m, 0, sizeof(gfxmatrix_t));
+ m->m00 = 1.0;
+ m->m11 = 1.0;
+}
+void gfxmatrix_multiply(gfxmatrix_t*m1, gfxmatrix_t*m2, gfxmatrix_t*dest)
+{
+ dest->m00 = m1->m00*m2->m00 + m1->m10*m2->m01;
+ dest->m01 = m1->m01*m2->m00 + m1->m11*m2->m01;
+ dest->m10 = m1->m00*m2->m10 + m1->m10*m2->m11;
+ dest->m11 = m1->m01*m2->m10 + m1->m11*m2->m11;
+ dest->tx = m1->m00*m2->tx + m1->m10*m2->ty + m1->tx;
+ dest->ty = m1->m01*m2->tx + m1->m11*m2->ty + m1->ty;
+}
+
+gfxfontlist_t* gfxfontlist_create()
+{
+ /* Initial list ist empty */
+ return 0;
+}
+
+gfxfont_t*gfxfontlist_findfont(gfxfontlist_t*list, char*id)
+{
+ gfxfontlist_t*l = list;
+ while(l) {
+ if(!strcmp((char*)l->font->id, id)) {
+ return l->font;
+ }
+ l = l->next;
+ }
+ return 0;
+}
+char gfxfontlist_hasfont(gfxfontlist_t*list, gfxfont_t*font)
+{
+ gfxfontlist_t*l = list;
+ while(l) {
+ if(!strcmp((char*)l->font->id, font->id)) {
+ return 1;
+ }
+ l = l->next;
+ }
+ return 0;
+}
+gfxfontlist_t*gfxfontlist_addfont(gfxfontlist_t*list, gfxfont_t*font)
+{
+ gfxfontlist_t*last=0,*l = list;
+ while(l) {
+ last = l;
+ if(l->font == font) {
+ return list; // we already know this font
+ }
+ l = l->next;
+ }
+ if(!font) {
+ fprintf(stderr, "Tried to add zero font\n");
+ }
+ l = (gfxfontlist_t*)rfx_calloc(sizeof(gfxfontlist_t));
+ l->font = font;
+ l->next = 0;
+ if(last) {
+ last->next = l;
+ return list;
+ } else {
+ return l;
+ }
+}
+void gfxfontlist_free(gfxfontlist_t*list, char deletefonts)
+{
+ gfxfontlist_t*l = list;
+ while(l) {
+ gfxfontlist_t*next = l->next;
+ if(deletefonts && l->font) {
+ gfxfont_free(l->font);l->font=0;
+ }
+ l->next = 0;
+ free(l);
+ l = next;
+ }
+}
+
+gfxline_t*gfxline_makerectangle(int x1,int y1,int x2, int y2)
+{
+ gfxline_t* line = (gfxline_t*)rfx_calloc(sizeof(gfxline_t)*5);
+ line[0].x = x1;line[0].y = y1;line[0].type = gfx_moveTo;line[0].next = &line[1];
+ line[1].x = x2;line[1].y = y1;line[1].type = gfx_lineTo;line[1].next = &line[2];
+ line[2].x = x2;line[2].y = y2;line[2].type = gfx_lineTo;line[2].next = &line[3];
+ line[3].x = x1;line[3].y = y2;line[3].type = gfx_lineTo;line[3].next = &line[4];
+ line[4].x = x1;line[4].y = y1;line[4].type = gfx_lineTo;
+ return line;
+}
+
+void gfximage_transform(gfximage_t*img, gfxcxform_t*cxform)
+{
+ int t;
+ int size = img->width*img->height;
+
+ int rr,rg,rb,ra, tr;
+ int gr,gg,gb,ga, tg;
+ int br,bg,bb,ba, tb;
+ int ar,ag,ab,aa, ta;
+ rr = (int)(cxform->rr*256);gr = (int)(cxform->gr*256);
+ rg = (int)(cxform->rg*256);gg = (int)(cxform->gg*256);
+ rb = (int)(cxform->rb*256);gb = (int)(cxform->gb*256);
+ ra = (int)(cxform->ra*256);ga = (int)(cxform->ga*256);
+ br = (int)(cxform->br*256);ar = (int)(cxform->ar*256);tr = (int)(cxform->tr*256);
+ bg = (int)(cxform->bg*256);ag = (int)(cxform->ag*256);tg = (int)(cxform->tg*256);
+ bb = (int)(cxform->bb*256);ab = (int)(cxform->ab*256);tb = (int)(cxform->tb*256);
+ ba = (int)(cxform->ba*256);aa = (int)(cxform->aa*256);ta = (int)(cxform->ta*256);
+
+ for(t=0;t<size;t++) {
+ gfxcolor_t*pixel = &img->data[t];
+ unsigned char r = (pixel->r * rr + pixel->g * rg + pixel->b * rb + pixel->a * ra + tr) / 256;
+ unsigned char g = (pixel->r * gr + pixel->g * gg + pixel->b * gb + pixel->a * ga + tg) / 256;
+ unsigned char b = (pixel->r * br + pixel->g * bg + pixel->b * bb + pixel->a * ba + tb) / 256;
+ unsigned char a = (pixel->r * ar + pixel->g * ag + pixel->b * ab + pixel->a * aa + ta) / 256;
+ pixel->r = r;
+ pixel->g = g;
+ pixel->b = b;
+ pixel->a = a;
+ }
+}