mhu/gds-render
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Implement full path support with correct line caps (rounded|flat|squared)

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This commit is contained in:
Mario Hüttel
2018-06-02 02:54:38 +02:00
parent 0f4de608a2
commit 690c1cb5ae
4 changed files with 36 additions and 5 deletions
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21
latex-output/latex-output.c
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@@ -18,6 +18,7 @@
*/
#include "latex-output.h"
#include <math.h>
#define WRITEOUT_BUFFER(buff) fwrite((buff)->str, sizeof(char), (buff)->len, tex_file)
@@ -87,8 +88,7 @@ static void generate_graphics(FILE *tex_file, GList *graphics, GList *linfo, GSt
struct gds_graphics *gfx;
struct gds_point *pt;
GdkRGBA color;
int width;
gchar *red, *green, *blue, *opacity;
static const char *line_caps[] = {"butt", "round", "rect"};
for (temp = graphics; temp != NULL; temp = temp->next) {
gfx = (struct gds_graphics *)temp->data;
@@ -108,9 +108,22 @@ static void generate_graphics(FILE *tex_file, GList *graphics, GList *linfo, GSt
g_string_printf(buffer, "cycle;\n");
WRITEOUT_BUFFER(buffer);
} else if(gfx->gfx_type == GRAPHIC_PATH) {
g_string_printf(buffer, "\\draw[line width=%lf pt, draw={c%d}, opacity={%lf}] ",
gfx->width_absolute/1000.0, gfx->layer, gfx->layer, color.alpha);
if (g_list_length(gfx->vertices) < 2) {
printf("Cannot write path with less than 2 points\n");
break;
}
if (gfx->path_render_type < 0 || gfx->path_render_type > 2) {
printf("Path type unrecognized. Setting to 'flushed'\n");
gfx->path_render_type = 0;
}
g_string_printf(buffer, "\\draw[line width=%lf pt, draw={c%d}, opacity={%lf}, cap=%s] ",
gfx->width_absolute/1000.0, gfx->layer, color.alpha,
line_caps[gfx->path_render_type]);
WRITEOUT_BUFFER(buffer);
/* Append vertices */
for (temp_vertex = gfx->vertices; temp_vertex != NULL; temp_vertex = temp_vertex->next) {
pt = (struct gds_point *)temp_vertex->data;