/**********************************************************************
* render_outline
*
* Create a list of line segments that represent the expanded outline
* that was supplied as input.
**********************************************************************/
void render_outline(void *window,
TESSLINE *outline,
C_COL color) {
/* No outline */
if (!outline)
return;
/* Draw Compact outline */
if (outline->loop)
render_edgepts (window, outline->loop, color);
/* Add on next outlines */
render_outline (window, outline->next, color);
/* Add on child outlines */
render_outline(window, outline->child, Grey);
}
/**********************************************************************
* render_segmentation
*
* Create a list of line segments that represent the list of chunks
* using the correct segmentation that was supplied as input.
**********************************************************************/
void render_segmentation(ScrollView *window,
TBLOB *chunks,
SEARCH_STATE segmentation) {
TBLOB *blob;
C_COL color = Black;
int char_num = -1;
int chunks_left = 0;
TBOX bbox;
if (chunks) bbox = chunks->bounding_box();
for (blob = chunks; blob != NULL; blob = blob->next) {
bbox += blob->bounding_box();
if (chunks_left-- == 0) {
color = color_list[++char_num % NUM_COLORS];
if (char_num < segmentation[0])
chunks_left = segmentation[char_num + 1];
else
chunks_left = MAX_INT32;
}
render_outline(window, blob->outlines, color);
}
window->ZoomToRectangle(bbox.left(), bbox.top(),
bbox.right(), bbox.bottom());
}
/**********************************************************************
* render_blob
*
* Create a list of line segments that represent the expanded outline
* that was supplied as input.
**********************************************************************/
void render_blob(void *window, TBLOB *blob, C_COL color) {
/* No outline */
if (!blob)
return;
render_outline (window, blob->outlines, color);
}
