From dea01a0928b82f63a86cbdaec6132e94fafda571 Mon Sep 17 00:00:00 2001 From: Campbell Barton Date: Wed, 13 Aug 2014 08:27:50 +1000 Subject: Compare squared distances for tracking selection --- source/blender/editors/space_clip/clip_graph_ops.c | 18 +++++++++--------- 1 file changed, 9 insertions(+), 9 deletions(-) (limited to 'source/blender/editors/space_clip/clip_graph_ops.c') diff --git a/source/blender/editors/space_clip/clip_graph_ops.c b/source/blender/editors/space_clip/clip_graph_ops.c index 95f59e79c08..d1e2c770ade 100644 --- a/source/blender/editors/space_clip/clip_graph_ops.c +++ b/source/blender/editors/space_clip/clip_graph_ops.c @@ -104,7 +104,7 @@ typedef struct { int coord; /* coordinate index of found entuty (0 = X-axis, 1 = Y-axis) */ bool has_prev; /* if there's valid coordinate of previous point of curve segment */ - float min_dist, /* minimal distance between mouse and currently found entuty */ + float min_dist_sq, /* minimal distance between mouse and currently found entity */ mouse_co[2], /* mouse coordinate */ prev_co[2], /* coordinate of previeous point of segment */ min_co[2]; /* coordinate of entity with minimal distance */ @@ -121,11 +121,11 @@ static void find_nearest_tracking_segment_cb(void *userdata, MovieTrackingTrack float co[2] = {scene_framenr, val}; if (data->has_prev) { - float d = dist_to_line_segment_v2(data->mouse_co, data->prev_co, co); + float dist_sq = dist_squared_to_line_segment_v2(data->mouse_co, data->prev_co, co); - if (data->track == NULL || d < data->min_dist) { + if (data->track == NULL || dist_sq < data->min_dist_sq) { data->track = track; - data->min_dist = d; + data->min_dist_sq = dist_sq; data->coord = coord; copy_v2_v2(data->min_co, co); } @@ -146,15 +146,15 @@ static void find_nearest_tracking_knot_cb(void *userdata, MovieTrackingTrack *tr MovieTrackingMarker *marker, int coord, int scene_framenr, float val) { MouseSelectUserData *data = userdata; - float dx = scene_framenr - data->mouse_co[0], dy = val - data->mouse_co[1]; - float d = dx * dx + dy * dy; + float mdiff[2] = {scene_framenr - data->mouse_co[0], val - data->mouse_co[1]}; + float dist_sq = len_squared_v2(mdiff); - if (data->marker == NULL || d < data->min_dist) { + if (data->marker == NULL || dist_sq < data->min_dist_sq) { float co[2] = {scene_framenr, val}; data->track = track; data->marker = marker; - data->min_dist = d; + data->min_dist_sq = dist_sq; data->coord = coord; copy_v2_v2(data->min_co, co); } @@ -164,7 +164,7 @@ static void find_nearest_tracking_knot_cb(void *userdata, MovieTrackingTrack *tr static void mouse_select_init_data(MouseSelectUserData *userdata, const float co[2]) { memset(userdata, 0, sizeof(MouseSelectUserData)); - userdata->min_dist = FLT_MAX; + userdata->min_dist_sq = FLT_MAX; copy_v2_v2(userdata->mouse_co, co); } -- cgit v1.2.3