/*
Makes mapping from real 3D coordinates, passed as coords array,
to 2D terminal coordinates, then draws filled polygon
*/
void
filled_polygon_common(int points, struct coordinate GPHUGE * coords, TBOOLEAN fixed, double z)
{
int i;
double x, y;
gpiPoint *icorners;
icorners = gp_alloc(points * sizeof(gpiPoint), "filled_polygon3d corners");
for (i = 0; i < points; i++) {
if (fixed)
z = coords[i].z;
map3d_xy_double(coords[i].x, coords[i].y, z, &x, &y);
icorners[i].x = x;
icorners[i].y = y;
}
#ifdef EXTENDED_COLOR_SPECS
if ((term->flags & TERM_EXTENDED_COLOR)) {
icorners[0].spec.gray = -1; /* force solid color */
}
#endif
if (default_fillstyle.fillstyle == FS_EMPTY)
icorners->style = FS_OPAQUE;
else
icorners->style = style_from_fill(&default_fillstyle);
term->filled_polygon(points, icorners);
free(icorners);
}
void ifilled_quadrangle(gpiPoint* icorners)
{
if (default_fillstyle.fillstyle == FS_EMPTY)
icorners->style = FS_OPAQUE;
else
icorners->style = style_from_fill(&default_fillstyle);
term->filled_polygon(4, icorners);
if (pm3d.hidden3d_tag) {
int i;
apply_pm3dcolor(&pm3d_border_lp.pm3d_color, term);
term->move(icorners[0].x, icorners[0].y);
for (i = 3; i >= 0; i--) {
term->vector(icorners[i].x, icorners[i].y);
}
}
}
void
ifilled_quadrangle(gpiPoint* icorners)
{
if (default_fillstyle.fillstyle == FS_EMPTY)
icorners->style = FS_OPAQUE;
else
icorners->style = style_from_fill(&default_fillstyle);
term->filled_polygon(4, icorners);
if (pm3d.border.l_type != LT_NODRAW) {
int i;
/* It should be sufficient to set only the color, but for some */
/* reason this causes the svg terminal to lose the fill type. */
term_apply_lp_properties(&pm3d_border_lp);
term->move(icorners[0].x, icorners[0].y);
for (i = 3; i >= 0; i--) {
term->vector(icorners[i].x, icorners[i].y);
}
}
}
/*
Makes mapping from real 3D coordinates, passed as coords array, but at z coordinate
fixed (base_z, for instance) to 2D terminal coordinates, then draws filled polygon
*/
void
filled_polygon_3dcoords_zfixed(int points, struct coordinate GPHUGE * coords, double z)
{
int i;
double x, y;
gpiPoint *icorners;
icorners = gp_alloc(points * sizeof(gpiPoint), "filled_polygon_zfix corners");
for (i = 0; i < points; i++) {
map3d_xy_double(coords[i].x, coords[i].y, z, &x, &y);
icorners[i].x = x;
icorners[i].y = y;
}
#ifdef EXTENDED_COLOR_SPECS
if (supply_extended_color_specs) {
icorners[0].spec.gray = -1; /* force solid color */
}
#endif
if (default_fillstyle.fillstyle == FS_EMPTY)
icorners->style = FS_OPAQUE;
else
icorners->style = style_from_fill(&default_fillstyle);
term->filled_polygon(points, icorners);
free(icorners);
}
/* plot a colour smooth box bounded by the terminal's integer coordinates
[x_from,y_from] to [x_to,y_to].
This routine is for non-postscript files, as it does an explicit loop
over all thin rectangles
*/
static void
draw_inside_color_smooth_box_bitmap(FILE * out)
{
int steps = 128; /* I think that nobody can distinguish more colours drawn in the palette */
int i, j, xy, xy2, xy_from, xy_to;
int jmin = 0;
double xy_step, gray, range;
gpiPoint corners[4];
(void) out; /* to avoid "unused parameter" warning */
if (color_box.rotation == 'v') {
corners[0].x = corners[3].x = color_box.bounds.xleft;
corners[1].x = corners[2].x = color_box.bounds.xright;
xy_from = color_box.bounds.ybot;
xy_to = color_box.bounds.ytop;
xy_step = (color_box.bounds.ytop - color_box.bounds.ybot) / (double)steps;
} else {
corners[0].y = corners[1].y = color_box.bounds.ybot;
corners[2].y = corners[3].y = color_box.bounds.ytop;
xy_from = color_box.bounds.xleft;
xy_to = color_box.bounds.xright;
xy_step = (color_box.bounds.xright - color_box.bounds.xleft) / (double)steps;
}
range = (xy_to - xy_from);
for (i = 0, xy2 = xy_from; i < steps; i++) {
/* Start from one pixel beyond the previous box */
xy = xy2;
xy2 = xy_from + (int) (xy_step * (i + 1));
/* Set the colour for the next range increment */
/* FIXME - The "1 +" seems wrong, yet it improves the placement in gd */
gray = (double)(1 + xy - xy_from) / range;
if (sm_palette.positive == SMPAL_NEGATIVE)
gray = 1 - gray;
set_color(gray);
/* If this is a defined palette, make sure that the range increment */
/* does not straddle a palette segment boundary. If it does, split */
/* it into two parts. */
if (sm_palette.colorMode == SMPAL_COLOR_MODE_GRADIENT)
for (j=jmin; j<sm_palette.gradient_num; j++) {
int boundary = xy_from + (int)(sm_palette.gradient[j].pos * range);
if (xy >= boundary) {
jmin = j;
} else {
if (xy2 > boundary) {
xy2 = boundary;
i--;
break;
}
}
if (xy2 < boundary)
break;
}
if (color_box.rotation == 'v') {
corners[0].y = corners[1].y = xy;
corners[2].y = corners[3].y = GPMIN(xy_to,xy2+1);
} else {
corners[0].x = corners[3].x = xy;
corners[1].x = corners[2].x = GPMIN(xy_to,xy2+1);
}
#ifdef EXTENDED_COLOR_SPECS
if (supply_extended_color_specs)
corners[0].spec.gray = -1; /* force solid color */
#endif
/* print the rectangle with the given colour */
if (default_fillstyle.fillstyle == FS_EMPTY)
corners->style = FS_OPAQUE;
else
corners->style = style_from_fill(&default_fillstyle);
term->filled_polygon(4, corners);
}
}
