diff options
Diffstat (limited to 'source/blender/blenkernel/intern/tracking.c')
| -rw-r--r-- | source/blender/blenkernel/intern/tracking.c | 90 |
1 files changed, 90 insertions, 0 deletions
diff --git a/source/blender/blenkernel/intern/tracking.c b/source/blender/blenkernel/intern/tracking.c index 8b462cba7ed..cd1af5a8de4 100644 --- a/source/blender/blenkernel/intern/tracking.c +++ b/source/blender/blenkernel/intern/tracking.c @@ -2798,6 +2798,96 @@ ImBuf *BKE_tracking_get_search_imbuf(ImBuf *ibuf, return searchibuf; } +BLI_INLINE int plane_marker_size_len_in_pixels(const float a[2], + const float b[2], + const int frame_width, + const int frame_height) +{ + const float a_px[2] = {a[0] * frame_width, a[1] * frame_height}; + const float b_px[2] = {b[0] * frame_width, b[1] * frame_height}; + + return ceilf(len_v2v2(a_px, b_px)); +} + +ImBuf *BKE_tracking_get_plane_imbuf(const ImBuf *frame_ibuf, + const MovieTrackingPlaneMarker *plane_marker) +{ + /* Alias for corners, allowing shorter access to coordinates. */ + const float(*corners)[2] = plane_marker->corners; + + /* Dimensions of the frame image in pixels. */ + const int frame_width = frame_ibuf->x; + const int frame_height = frame_ibuf->y; + + /* Lengths of left and right edges of the plane marker, in pixels. */ + const int left_side_len_px = plane_marker_size_len_in_pixels( + corners[0], corners[3], frame_width, frame_height); + const int right_side_len_px = plane_marker_size_len_in_pixels( + corners[1], corners[2], frame_width, frame_height); + + /* Lengths of top and bottom edges of the plane marker, in pixels. */ + const int top_side_len_px = plane_marker_size_len_in_pixels( + corners[3], corners[2], frame_width, frame_height); + const int bottom_side_len_px = plane_marker_size_len_in_pixels( + corners[0], corners[1], frame_width, frame_height); + + /* Choose the number of samples as a maximum of the corresponding sides in pixels. */ + const int num_samples_x = max_ii(top_side_len_px, bottom_side_len_px); + const int num_samples_y = max_ii(left_side_len_px, right_side_len_px); + + /* Create new result image with the same type of content as the original. */ + ImBuf *plane_ibuf = IMB_allocImBuf( + num_samples_x, num_samples_y, 32, frame_ibuf->rect_float ? IB_rectfloat : IB_rect); + + /* Calculate corner coordinates in pixel space, as separate X/Y arrays. */ + const double src_pixel_x[4] = {corners[0][0] * frame_width, + corners[1][0] * frame_width, + corners[2][0] * frame_width, + corners[3][0] * frame_width}; + const double src_pixel_y[4] = {corners[0][1] * frame_height, + corners[1][1] * frame_height, + corners[2][1] * frame_height, + corners[3][1] * frame_height}; + + /* Warped Position is unused but is expected to be provided by the API. */ + double warped_position_x, warped_position_y; + + /* Actual sampling. */ + if (frame_ibuf->rect_float != NULL) { + libmv_samplePlanarPatchFloat(frame_ibuf->rect_float, + frame_ibuf->x, + frame_ibuf->y, + 4, + src_pixel_x, + src_pixel_y, + num_samples_x, + num_samples_y, + NULL, + plane_ibuf->rect_float, + &warped_position_x, + &warped_position_y); + } + else { + libmv_samplePlanarPatchByte((unsigned char *)frame_ibuf->rect, + frame_ibuf->x, + frame_ibuf->y, + 4, + src_pixel_x, + src_pixel_y, + num_samples_x, + num_samples_y, + NULL, + (unsigned char *)plane_ibuf->rect, + &warped_position_x, + &warped_position_y); + } + + plane_ibuf->rect_colorspace = frame_ibuf->rect_colorspace; + plane_ibuf->float_colorspace = frame_ibuf->float_colorspace; + + return plane_ibuf; +} + void BKE_tracking_disable_channels( ImBuf *ibuf, bool disable_red, bool disable_green, bool disable_blue, bool grayscale) { |