static void
fz_process_mesh_type3(fz_context *ctx, fz_shade *shade, const fz_matrix *ctm, fz_mesh_processor *painter)
{
fz_point p0, p1;
float r0, r1;
fz_point e;
float er, rs;
int count;
p0.x = shade->u.l_or_r.coords[0][0];
p0.y = shade->u.l_or_r.coords[0][1];
r0 = shade->u.l_or_r.coords[0][2];
p1.x = shade->u.l_or_r.coords[1][0];
p1.y = shade->u.l_or_r.coords[1][1];
r1 = shade->u.l_or_r.coords[1][2];
/* number of segments for a half-circle */
count = 4 * sqrtf(fz_matrix_expansion(ctm) * fz_max(r0, r1));
if (count < 3)
count = 3;
if (count > 1024)
count = 1024;
if (shade->u.l_or_r.extend[0])
{
if (r0 < r1)
rs = r0 / (r0 - r1);
else
rs = -HUGENUM;
e.x = p0.x + (p1.x - p0.x) * rs;
e.y = p0.y + (p1.y - p0.y) * rs;
er = r0 + (r1 - r0) * rs;
fz_paint_annulus(ctx, ctm, e, er, 0, p0, r0, 0, count, painter);
}
fz_paint_annulus(ctx, ctm, p0, r0, 0, p1, r1, 1, count, painter);
if (shade->u.l_or_r.extend[1])
{
if (r0 > r1)
rs = r1 / (r1 - r0);
else
rs = -HUGENUM;
e.x = p1.x + (p0.x - p1.x) * rs;
e.y = p1.y + (p0.y - p1.y) * rs;
er = r1 + (r0 - r1) * rs;
fz_paint_annulus(ctx, ctm, p1, r1, 1, e, er, 1, count, painter);
}
}
static void
fz_mesh_type3_process(fz_context *ctx, fz_shade *shade, const fz_matrix *ctm, fz_mesh_processor *painter)
{
fz_point p0, p1;
float r0, r1;
fz_point e;
float er, rs;
p0.x = shade->u.l_or_r.coords[0][0];
p0.y = shade->u.l_or_r.coords[0][1];
r0 = shade->u.l_or_r.coords[0][2];
p1.x = shade->u.l_or_r.coords[1][0];
p1.y = shade->u.l_or_r.coords[1][1];
r1 = shade->u.l_or_r.coords[1][2];
if (shade->u.l_or_r.extend[0])
{
if (r0 < r1)
rs = r0 / (r0 - r1);
else
rs = -HUGENUM;
e.x = p0.x + (p1.x - p0.x) * rs;
e.y = p0.y + (p1.y - p0.y) * rs;
er = r0 + (r1 - r0) * rs;
fz_paint_annulus(ctm, e, er, 0, p0, r0, 0, painter);
}
fz_paint_annulus(ctm, p0, r0, 0, p1, r1, 1, painter);
if (shade->u.l_or_r.extend[1])
{
if (r0 > r1)
rs = r1 / (r1 - r0);
else
rs = -HUGENUM;
e.x = p1.x + (p0.x - p1.x) * rs;
e.y = p1.y + (p0.y - p1.y) * rs;
er = r1 + (r0 - r1) * rs;
fz_paint_annulus(ctm, p1, r1, 1, e, er, 1, painter);
}
}
static void
fz_paint_radial(fz_shade *shade, fz_matrix ctm, fz_pixmap *dest, fz_bbox bbox)
{
fz_point p0, p1;
float r0, r1;
fz_point e;
float er, rs;
p0.x = shade->mesh[0];
p0.y = shade->mesh[1];
r0 = shade->mesh[2];
p1.x = shade->mesh[3];
p1.y = shade->mesh[4];
r1 = shade->mesh[5];
if (shade->extend[0])
{
if (r0 < r1)
rs = r0 / (r0 - r1);
else
rs = -HUGENUM;
e.x = p0.x + (p1.x - p0.x) * rs;
e.y = p0.y + (p1.y - p0.y) * rs;
er = r0 + (r1 - r0) * rs;
fz_paint_annulus(ctm, e, er, 0, p0, r0, 0, dest, bbox);
}
fz_paint_annulus(ctm, p0, r0, 0, p1, r1, 255, dest, bbox);
if (shade->extend[1])
{
if (r0 > r1)
rs = r1 / (r1 - r0);
else
rs = -HUGENUM;
e.x = p1.x + (p0.x - p1.x) * rs;
e.y = p1.y + (p0.y - p1.y) * rs;
er = r1 + (r0 - r1) * rs;
fz_paint_annulus(ctm, p1, r1, 255, e, er, 255, dest, bbox);
}
}
