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-rw-r--r--gsk/gskcontour.c240
1 files changed, 46 insertions, 194 deletions
diff --git a/gsk/gskcontour.c b/gsk/gskcontour.c
index 359356d838..528540d2ad 100644
--- a/gsk/gskcontour.c
+++ b/gsk/gskcontour.c
@@ -21,6 +21,7 @@
#include "gskcontourprivate.h"
+#include "gskcurveprivate.h"
#include "gskpathbuilder.h"
#include "gskpathprivate.h"
#include "gsksplineprivate.h"
@@ -1047,7 +1048,7 @@ typedef struct
GskStandardContourMeasure measure;
} LengthDecompose;
-static void
+static gboolean
gsk_standard_contour_measure_add_point (const graphene_point_t *from,
const graphene_point_t *to,
float from_progress,
@@ -1058,6 +1059,9 @@ gsk_standard_contour_measure_add_point (const graphene_point_t *from,
float seg_length;
seg_length = graphene_point_distance (from, to, NULL, NULL);
+ if (seg_length == 0)
+ return TRUE;
+
decomp->measure.end += seg_length;
decomp->measure.start_progress = from_progress;
decomp->measure.end_progress = to_progress;
@@ -1066,6 +1070,8 @@ gsk_standard_contour_measure_add_point (const graphene_point_t *from,
g_array_append_val (decomp->array, decomp->measure);
decomp->measure.start += seg_length;
+
+ return TRUE;
}
static gpointer
@@ -1075,7 +1081,7 @@ gsk_standard_contour_init_measure (const GskContour *contour,
{
const GskStandardContour *self = (const GskStandardContour *) contour;
gsize i;
- float length, seg_length;
+ float length;
GArray *array;
array = g_array_new (FALSE, FALSE, sizeof (GskStandardContourMeasure));
@@ -1083,50 +1089,12 @@ gsk_standard_contour_init_measure (const GskContour *contour,
for (i = 1; i < self->n_ops; i ++)
{
- const graphene_point_t *pt = gsk_pathop_points (self->ops[i]);
-
- switch (gsk_pathop_op (self->ops[i]))
- {
- case GSK_PATH_MOVE:
- break;
+ GskCurve curve;
+ LengthDecompose decomp = { array, { length, length, 0, 0, { }, i } };
- case GSK_PATH_CLOSE:
- case GSK_PATH_LINE:
- seg_length = graphene_point_distance (&pt[0], &pt[1], NULL, NULL);
- if (seg_length > 0)
- {
- g_array_append_vals (array,
- &(GskStandardContourMeasure) {
- length,
- length + seg_length,
- 0, 1,
- pt[1],
- i,
- }, 1);
- length += seg_length;
- }
- break;
-
- case GSK_PATH_CURVE:
- {
- LengthDecompose decomp = { array, { length, length, 0, 0, pt[0], i } };
- gsk_spline_decompose_cubic (pt, tolerance, gsk_standard_contour_measure_add_point, &decomp);
- length = decomp.measure.start;
- }
- break;
-
- case GSK_PATH_CONIC:
- {
- LengthDecompose decomp = { array, { length, length, 0, 0, pt[0], i } };
- gsk_spline_decompose_conic (pt, tolerance, gsk_standard_contour_measure_add_point, &decomp);
- length = decomp.measure.start;
- }
- break;
-
- default:
- g_assert_not_reached();
- return NULL;
- }
+ gsk_curve_init (&curve, self->ops[i]);
+ gsk_curve_decompose (&curve, tolerance, gsk_standard_contour_measure_add_point, &decomp);
+ length = decomp.measure.start;
}
*out_length = length;
@@ -1163,35 +1131,11 @@ gsk_standard_contour_measure_get_point (GskStandardContour *self,
graphene_point_t *pos,
graphene_vec2_t *tangent)
{
- const graphene_point_t *pts;
+ GskCurve curve;
- pts = gsk_pathop_points (self->ops[op]);
- switch (gsk_pathop_op (self->ops[op]))
- {
- case GSK_PATH_LINE:
- case GSK_PATH_CLOSE:
- if (pos)
- graphene_point_interpolate (&pts[0], &pts[1], progress, pos);
- if (tangent)
- {
- graphene_vec2_init (tangent, pts[1].x - pts[0].x, pts[1].y - pts[0].y);
- graphene_vec2_normalize (tangent, tangent);
- }
- break;
-
- case GSK_PATH_CURVE:
- gsk_spline_get_point_cubic (pts, progress, pos, tangent);
- break;
-
- case GSK_PATH_CONIC:
- gsk_spline_get_point_conic (pts, progress, pos, tangent);
- break;
-
- case GSK_PATH_MOVE:
- default:
- g_assert_not_reached ();
- return;
- }
+ gsk_curve_init (&curve, self->ops[op]);
+
+ gsk_curve_eval (&curve, progress, pos, tangent);
}
static void
@@ -1382,144 +1326,52 @@ gsk_standard_contour_add_segment (const GskContour *contour,
* taking care that first and last operation might be identical */
if (start_measure)
{
- switch (gsk_pathop_op (self->ops[start_measure->op]))
- {
- case GSK_PATH_CLOSE:
- case GSK_PATH_LINE:
- {
- const graphene_point_t *pts = gsk_pathop_points (self->ops[start_measure->op]);
- graphene_point_t point;
-
- graphene_point_interpolate (&pts[0], &pts[1], start_progress, &point);
- gsk_path_builder_move_to (builder, point.x, point.y);
- if (end_measure && end_measure->op == start_measure->op)
- {
- graphene_point_interpolate (&pts[0], &pts[1], end_progress, &point);
- gsk_path_builder_line_to (builder, point.x, point.y);
- return;
- }
- gsk_path_builder_line_to (builder, pts[1].x, pts[1].y);
- }
- break;
+ GskCurve curve, cut;
+ const graphene_point_t *start_point;
- case GSK_PATH_CURVE:
- {
- const graphene_point_t *pts = gsk_pathop_points (self->ops[start_measure->op]);
- graphene_point_t curve[4], discard[4];
-
- gsk_spline_split_cubic (pts, discard, curve, start_progress);
- if (end_measure && end_measure->op == start_measure->op)
- {
- graphene_point_t tiny[4];
- gsk_spline_split_cubic (curve, tiny, discard, (end_progress - start_progress) / (1 - start_progress));
- gsk_path_builder_move_to (builder, tiny[0].x, tiny[0].y);
- gsk_path_builder_curve_to (builder, tiny[1].x, tiny[1].y, tiny[2].x, tiny[2].y, tiny[3].x, tiny[3].y);
- return;
- }
- gsk_path_builder_move_to (builder, curve[0].x, curve[0].y);
- gsk_path_builder_curve_to (builder, curve[1].x, curve[1].y, curve[2].x, curve[2].y, curve[3].x, curve[3].y);
- }
- break;
+ gsk_curve_init (&curve, self->ops[start_measure->op]);
- case GSK_PATH_CONIC:
- {
- const graphene_point_t *pts = gsk_pathop_points (self->ops[start_measure->op]);
- graphene_point_t curve[4], discard[4];
-
- gsk_spline_split_conic (pts, discard, curve, start_progress);
- if (end_measure && end_measure->op == start_measure->op)
- {
- graphene_point_t tiny[4];
- gsk_spline_split_conic (curve, tiny, discard, (end_progress - start_progress) / (1 - start_progress));
- gsk_path_builder_move_to (builder, tiny[0].x, tiny[0].y);
- gsk_path_builder_conic_to (builder, tiny[1].x, tiny[1].y, tiny[3].x, tiny[3].y, tiny[2].x);
- return;
- }
- gsk_path_builder_move_to (builder, curve[0].x, curve[0].y);
- gsk_path_builder_conic_to (builder, curve[1].x, curve[1].y, curve[3].x, curve[3].y, curve[2].x);
- }
- break;
+ gsk_curve_split (&curve, start_progress, NULL, &cut);
+ start_point = gsk_curve_get_start_point (&cut);
+ gsk_path_builder_move_to (builder, start_point->x, start_point->y);
- case GSK_PATH_MOVE:
- default:
- g_assert_not_reached();
+ if (end_measure && end_measure->op == start_measure->op)
+ {
+ GskCurve cut2;
+
+ gsk_curve_split (&cut, (end_progress - start_progress) / (1 - start_progress), &cut2, NULL);
+ gsk_curve_builder_to (&cut2, builder);
return;
- }
+ }
+
+ gsk_curve_builder_to (&cut, builder);
i = start_measure->op + 1;
}
else
i = 0;
- for (; i < (end_measure ? end_measure->op : self->n_ops); i++)
+ for (; i < (end_measure ? end_measure->op : self->n_ops - 1); i++)
{
- const graphene_point_t *pt = gsk_pathop_points (self->ops[i]);
-
- switch (gsk_pathop_op (self->ops[i]))
- {
- case GSK_PATH_MOVE:
- gsk_path_builder_move_to (builder, pt[0].x, pt[0].y);
- break;
-
- case GSK_PATH_LINE:
- case GSK_PATH_CLOSE:
- gsk_path_builder_line_to (builder, pt[1].x, pt[1].y);
- break;
-
- case GSK_PATH_CURVE:
- gsk_path_builder_curve_to (builder, pt[1].x, pt[1].y, pt[2].x, pt[2].y, pt[3].x, pt[3].y);
- break;
-
- case GSK_PATH_CONIC:
- gsk_path_builder_conic_to (builder, pt[1].x, pt[1].y, pt[3].x, pt[3].y, pt[2].x);
- break;
-
- default:
- g_assert_not_reached();
- return;
- }
+ gsk_path_builder_pathop_to (builder, self->ops[i]);
}
/* Add the last partial operation */
if (end_measure)
{
- switch (gsk_pathop_op (self->ops[end_measure->op]))
- {
- case GSK_PATH_CLOSE:
- case GSK_PATH_LINE:
- {
- const graphene_point_t *pts = gsk_pathop_points (self->ops[end_measure->op]);
- graphene_point_t point;
-
- graphene_point_interpolate (&pts[0], &pts[1], end_progress, &point);
- gsk_path_builder_line_to (builder, point.x, point.y);
- }
- break;
+ GskCurve curve, cut;
- case GSK_PATH_CURVE:
- {
- const graphene_point_t *pts = gsk_pathop_points (self->ops[end_measure->op]);
- graphene_point_t curve[4], discard[4];
-
- gsk_spline_split_cubic (pts, curve, discard, end_progress);
- gsk_path_builder_curve_to (builder, curve[1].x, curve[1].y, curve[2].x, curve[2].y, curve[3].x, curve[3].y);
- }
- break;
-
- case GSK_PATH_CONIC:
- {
- const graphene_point_t *pts = gsk_pathop_points (self->ops[end_measure->op]);
- graphene_point_t curve[4], discard[4];
+ gsk_curve_init (&curve, self->ops[end_measure->op]);
- gsk_spline_split_conic (pts, curve, discard, end_progress);
- gsk_path_builder_conic_to (builder, curve[1].x, curve[1].y, curve[3].x, curve[3].y, curve[2].x);
- }
- break;
-
- case GSK_PATH_MOVE:
- default:
- g_assert_not_reached();
- return;
- }
+ gsk_curve_split (&curve, end_progress, &cut, NULL);
+ gsk_curve_builder_to (&cut, builder);
+ }
+ else if (i == self->n_ops - 1)
+ {
+ gskpathop op = self->ops[i];
+ if (gsk_pathop_op (op) == GSK_PATH_CLOSE)
+ gsk_path_builder_pathop_to (builder, gsk_pathop_encode (GSK_PATH_LINE, gsk_pathop_points (op)));
+ else
+ gsk_path_builder_pathop_to (builder, op);
}
}
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