static void
pdf_add_triangle(fz_context *ctx, fz_shade *shade,
struct vertex *v0,
struct vertex *v1,
struct vertex *v2)
{
pdf_add_vertex(ctx, shade, v0);
pdf_add_vertex(ctx, shade, v1);
pdf_add_vertex(ctx, shade, v2);
}
static void
pdf_load_radial_shading(fz_shade *shade, pdf_document *xref, pdf_obj *dict, int funcs, pdf_function **func)
{
pdf_obj *obj;
float d0, d1;
int e0, e1;
float x0, y0, r0, x1, y1, r1;
struct vertex p1, p2;
fz_context *ctx = xref->ctx;
obj = pdf_dict_gets(dict, "Coords");
x0 = pdf_to_real(pdf_array_get(obj, 0));
y0 = pdf_to_real(pdf_array_get(obj, 1));
r0 = pdf_to_real(pdf_array_get(obj, 2));
x1 = pdf_to_real(pdf_array_get(obj, 3));
y1 = pdf_to_real(pdf_array_get(obj, 4));
r1 = pdf_to_real(pdf_array_get(obj, 5));
d0 = 0;
d1 = 1;
obj = pdf_dict_gets(dict, "Domain");
if (pdf_array_len(obj) == 2)
{
d0 = pdf_to_real(pdf_array_get(obj, 0));
d1 = pdf_to_real(pdf_array_get(obj, 1));
}
e0 = e1 = 0;
obj = pdf_dict_gets(dict, "Extend");
if (pdf_array_len(obj) == 2)
{
e0 = pdf_to_bool(pdf_array_get(obj, 0));
e1 = pdf_to_bool(pdf_array_get(obj, 1));
}
pdf_sample_shade_function(ctx, shade, funcs, func, d0, d1);
shade->type = FZ_RADIAL;
shade->extend[0] = e0;
shade->extend[1] = e1;
p1.x = x0;
p1.y = y0;
p1.c[0] = r0;
pdf_add_vertex(ctx, shade, &p1);
p2.x = x1;
p2.y = y1;
p2.c[0] = r1;
pdf_add_vertex(ctx, shade, &p2);
}
static void
pdf_load_axial_shading(fz_shade *shade, pdf_xref *xref, fz_obj *dict, int funcs, pdf_function **func)
{
fz_obj *obj;
float d0, d1;
int e0, e1;
float x0, y0, x1, y1;
struct vertex p1, p2;
fz_context *ctx = xref->ctx;
obj = fz_dict_gets(ctx, dict, "Coords");
x0 = fz_to_real(ctx, fz_array_get(ctx, obj, 0));
y0 = fz_to_real(ctx, fz_array_get(ctx, obj, 1));
x1 = fz_to_real(ctx, fz_array_get(ctx, obj, 2));
y1 = fz_to_real(ctx, fz_array_get(ctx, obj, 3));
d0 = 0;
d1 = 1;
obj = fz_dict_gets(ctx, dict, "Domain");
if (fz_array_len(ctx, obj) == 2)
{
d0 = fz_to_real(ctx, fz_array_get(ctx, obj, 0));
d1 = fz_to_real(ctx, fz_array_get(ctx, obj, 1));
}
e0 = e1 = 0;
obj = fz_dict_gets(ctx, dict, "Extend");
if (fz_array_len(ctx, obj) == 2)
{
e0 = fz_to_bool(ctx, fz_array_get(ctx, obj, 0));
e1 = fz_to_bool(ctx, fz_array_get(ctx, obj, 1));
}
pdf_sample_shade_function(ctx, shade, funcs, func, d0, d1);
shade->type = FZ_LINEAR;
shade->extend[0] = e0;
shade->extend[1] = e1;
p1.x = x0;
p1.y = y0;
p1.c[0] = 0;
pdf_add_vertex(ctx, shade, &p1);
p2.x = x1;
p2.y = y1;
p2.c[0] = 0;
pdf_add_vertex(ctx, shade, &p2);
}
