From 91781c76c4b1bb3eecd31a2b482a4c87754cd2a7 Mon Sep 17 00:00:00 2001 From: Campbell Barton Date: Wed, 13 Jun 2012 12:58:01 +0000 Subject: framing options for camera background image: stretch/fit/crop --- source/blender/editors/space_view3d/view3d_draw.c | 40 +++++++++++++++++++++++ 1 file changed, 40 insertions(+) (limited to 'source/blender/editors/space_view3d/view3d_draw.c') diff --git a/source/blender/editors/space_view3d/view3d_draw.c b/source/blender/editors/space_view3d/view3d_draw.c index 6d9507ebff1..6ef5d538b24 100644 --- a/source/blender/editors/space_view3d/view3d_draw.c +++ b/source/blender/editors/space_view3d/view3d_draw.c @@ -1547,6 +1547,8 @@ static void view3d_draw_bgpic(Scene *scene, ARegion *ar, View3D *v3d, (bgpic->view & (1 << rv3d->view)) || /* check agaist flags */ (rv3d->persp == RV3D_CAMOB && bgpic->view == (1 << RV3D_VIEW_CAMERA))) { + float image_aspect[2]; + /* disable individual images */ if ((bgpic->flag & V3D_BGPIC_DISABLED)) continue; @@ -1558,6 +1560,9 @@ static void view3d_draw_bgpic(Scene *scene, ARegion *ar, View3D *v3d, continue; BKE_image_user_frame_calc(&bgpic->iuser, CFRA, 0); ibuf = BKE_image_get_ibuf(ima, &bgpic->iuser); + + image_aspect[0] = ima->aspx; + image_aspect[1] = ima->aspx; } else if (bgpic->source == V3D_BGPIC_MOVIE) { clip = NULL; @@ -1574,6 +1579,9 @@ static void view3d_draw_bgpic(Scene *scene, ARegion *ar, View3D *v3d, BKE_movieclip_user_set_frame(&bgpic->cuser, CFRA); ibuf = BKE_movieclip_get_ibuf(clip, &bgpic->cuser); + image_aspect[0] = clip->aspx; + image_aspect[1] = clip->aspx; + /* working with ibuf from image and clip has got different workflow now. * ibuf acquired from clip is referenced by cache system and should * be dereferenced after usage. */ @@ -1609,6 +1617,38 @@ static void view3d_draw_bgpic(Scene *scene, ARegion *ar, View3D *v3d, x2 = ar->winrct.xmax; y2 = ar->winrct.ymax; } + + /* aspect correction */ + if (bgpic->flag & V3D_BGPIC_CAMERA_ASPECT) + { + /* apply aspect from clip */ + const float w_src = ibuf->x * image_aspect[0]; + const float h_src = ibuf->y * image_aspect[1]; + + /* destination aspect is already applied from the camera frame */ + const float w_dst = x1 - x2; + const float h_dst = y1 - y2; + + const float asp_src = w_src / h_src; + const float asp_dst = w_dst / h_dst; + + if (fabsf(asp_src - asp_dst) >= FLT_EPSILON) { + if ((asp_src > asp_dst) == ((bgpic->flag & V3D_BGPIC_CAMERA_CROP) != 0)) { + /* fit X */ + const float div = asp_src / asp_dst; + const float cent = (x1 + x2) / 2.0f; + x1 = ((x1 - cent) * div) + cent; + x2 = ((x2 - cent) * div) + cent; + } + else { + /* fit Y */ + const float div = asp_dst / asp_src; + const float cent = (y1 + y2) / 2.0f; + y1 = ((y1 - cent) * div) + cent; + y2 = ((y2 - cent) * div) + cent; + } + } + } } else { float sco[2]; -- cgit v1.2.3