static void
fz_mesh_type4_process(fz_context *ctx, fz_shade *shade, const fz_matrix *ctm, fz_mesh_processor *painter)
{
fz_stream *stream = fz_open_compressed_buffer(ctx, shade->buffer);
fz_vertex v[4];
fz_vertex *va = &v[0];
fz_vertex *vb = &v[1];
fz_vertex *vc = &v[2];
fz_vertex *vd = &v[3];
int flag, i, ncomp;
int bpflag = shade->u.m.bpflag;
int bpcoord = shade->u.m.bpcoord;
int bpcomp = shade->u.m.bpcomp;
float x0 = shade->u.m.x0;
float x1 = shade->u.m.x1;
float y0 = shade->u.m.y0;
float y1 = shade->u.m.y1;
float *c0 = shade->u.m.c0;
float *c1 = shade->u.m.c1;
fz_try(ctx)
{
ncomp = (shade->use_function > 0 ? 1 : shade->colorspace->n);
while (!fz_is_eof_bits(stream))
{
flag = fz_read_bits(stream, bpflag);
vd->p.x = read_sample(stream, bpcoord, x0, x1);
vd->p.y = read_sample(stream, bpcoord, y0, y1);
fz_transform_point(&vd->p, ctm);
for (i = 0; i < ncomp; i++)
vd->c[i] = read_sample(stream, bpcomp, c0[i], c1[i]);
switch (flag)
{
case 0: /* start new triangle */
SWAP(va, vd);
fz_read_bits(stream, bpflag);
vb->p.x = read_sample(stream, bpcoord, x0, x1);
vb->p.y = read_sample(stream, bpcoord, y0, y1);
fz_transform_point(&vb->p, ctm);
for (i = 0; i < ncomp; i++)
vb->c[i] = read_sample(stream, bpcomp, c0[i], c1[i]);
fz_read_bits(stream, bpflag);
vc->p.x = read_sample(stream, bpcoord, x0, x1);
vc->p.y = read_sample(stream, bpcoord, y0, y1);
fz_transform_point(&vc->p, ctm);
for (i = 0; i < ncomp; i++)
vc->c[i] = read_sample(stream, bpcomp, c0[i], c1[i]);
paint_tri(painter, va, vb, vc);
break;
case 1: /* Vb, Vc, Vd */
SWAP(va, vb);
SWAP(vb, vc);
SWAP(vc, vd);
paint_tri(painter, va, vb, vc);
break;
case 2: /* Va, Vc, Vd */
SWAP(vb, vc);
SWAP(vc, vd);
paint_tri(painter, va, vb, vc);
break;
}
}
}
fz_always(ctx)
{
fz_close(stream);
}
fz_catch(ctx)
{
fz_rethrow(ctx);
}
}
static void
fz_process_mesh_type4(fz_context *ctx, fz_shade *shade, const fz_matrix *ctm, fz_mesh_processor *painter)
{
fz_stream *stream = fz_open_compressed_buffer(ctx, shade->buffer);
fz_vertex v[4];
fz_vertex *va = &v[0];
fz_vertex *vb = &v[1];
fz_vertex *vc = &v[2];
fz_vertex *vd = &v[3];
int flag, i, ncomp = painter->ncomp;
int bpflag = shade->u.m.bpflag;
int bpcoord = shade->u.m.bpcoord;
int bpcomp = shade->u.m.bpcomp;
float x0 = shade->u.m.x0;
float x1 = shade->u.m.x1;
float y0 = shade->u.m.y0;
float y1 = shade->u.m.y1;
float *c0 = shade->u.m.c0;
float *c1 = shade->u.m.c1;
float x, y, c[FZ_MAX_COLORS];
fz_try(ctx)
{
while (!fz_is_eof_bits(ctx, stream))
{
flag = fz_read_bits(ctx, stream, bpflag);
x = read_sample(ctx, stream, bpcoord, x0, x1);
y = read_sample(ctx, stream, bpcoord, y0, y1);
for (i = 0; i < ncomp; i++)
c[i] = read_sample(ctx, stream, bpcomp, c0[i], c1[i]);
fz_prepare_vertex(ctx, painter, vd, ctm, x, y, c);
switch (flag)
{
case 0: /* start new triangle */
SWAP(va, vd);
fz_read_bits(ctx, stream, bpflag);
x = read_sample(ctx, stream, bpcoord, x0, x1);
y = read_sample(ctx, stream, bpcoord, y0, y1);
for (i = 0; i < ncomp; i++)
c[i] = read_sample(ctx, stream, bpcomp, c0[i], c1[i]);
fz_prepare_vertex(ctx, painter, vb, ctm, x, y, c);
fz_read_bits(ctx, stream, bpflag);
x = read_sample(ctx, stream, bpcoord, x0, x1);
y = read_sample(ctx, stream, bpcoord, y0, y1);
for (i = 0; i < ncomp; i++)
c[i] = read_sample(ctx, stream, bpcomp, c0[i], c1[i]);
fz_prepare_vertex(ctx, painter, vc, ctm, x, y, c);
paint_tri(ctx, painter, va, vb, vc);
break;
case 1: /* Vb, Vc, Vd */
SWAP(va, vb);
SWAP(vb, vc);
SWAP(vc, vd);
paint_tri(ctx, painter, va, vb, vc);
break;
case 2: /* Va, Vc, Vd */
SWAP(vb, vc);
SWAP(vc, vd);
paint_tri(ctx, painter, va, vb, vc);
break;
}
}
}
fz_always(ctx)
{
fz_drop_stream(ctx, stream);
}
fz_catch(ctx)
{
fz_rethrow(ctx);
}
}
