diff options
author | Robert Holcomb <bob_holcomb@hotmail.com> | 2007-03-24 09:57:29 +0300 |
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committer | Robert Holcomb <bob_holcomb@hotmail.com> | 2007-03-24 09:57:29 +0300 |
commit | 611d1c523c6872e048ba0f379d116d727a756e1e (patch) | |
tree | f6624b8fd1d4d9bb4cef9da2710dfc1ec6bce67a /source/blender/nodes/intern/CMP_nodes/CMP_alphaOver.c | |
parent | f4c816869c8a9240eb6ed9abef194c4887256df2 (diff) |
Initial commit. Not in build system so shouldn't interfere with anything at this point. Will commit modified versions of existing files once build system is tested.
Diffstat (limited to 'source/blender/nodes/intern/CMP_nodes/CMP_alphaOver.c')
-rw-r--r-- | source/blender/nodes/intern/CMP_nodes/CMP_alphaOver.c | 133 |
1 files changed, 133 insertions, 0 deletions
diff --git a/source/blender/nodes/intern/CMP_nodes/CMP_alphaOver.c b/source/blender/nodes/intern/CMP_nodes/CMP_alphaOver.c new file mode 100644 index 00000000000..5bf193b604c --- /dev/null +++ b/source/blender/nodes/intern/CMP_nodes/CMP_alphaOver.c @@ -0,0 +1,133 @@ +/** + * $Id$ + * + * ***** BEGIN GPL LICENSE BLOCK ***** + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software Foundation, + * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + * + * The Original Code is Copyright (C) 2006 Blender Foundation. + * All rights reserved. + * + * The Original Code is: all of this file. + * + * Contributor(s): none yet. + * + * ***** END GPL LICENSE BLOCK ***** + */ + +#include "../CMP_util.h" + +/* **************** ALPHAOVER ******************** */ +static bNodeSocketType cmp_node_alphaover_in[]= { + { SOCK_VALUE, 1, "Fac", 1.0f, 0.0f, 1.0f, 1.0f, 0.0f, 1.0f}, + { SOCK_RGBA, 1, "Image", 0.8f, 0.8f, 0.8f, 1.0f, 0.0f, 1.0f}, + { SOCK_RGBA, 1, "Image", 0.8f, 0.8f, 0.8f, 1.0f, 0.0f, 1.0f}, + { -1, 0, "" } +}; +static bNodeSocketType cmp_node_alphaover_out[]= { + { SOCK_RGBA, 0, "Image", 0.0f, 0.0f, 0.0f, 1.0f, 0.0f, 1.0f}, + { -1, 0, "" } +}; + +static void do_alphaover_premul(bNode *node, float *out, float *src, float *over, float *fac) +{ + + if(over[3]<=0.0f) { + QUATCOPY(out, src); + } + else if(*fac==1.0f && over[3]>=1.0f) { + QUATCOPY(out, over); + } + else { + float mul= 1.0f - *fac*over[3]; + + out[0]= (mul*src[0]) + *fac*over[0]; + out[1]= (mul*src[1]) + *fac*over[1]; + out[2]= (mul*src[2]) + *fac*over[2]; + out[3]= (mul*src[3]) + *fac*over[3]; + } +} + +/* result will be still premul, but the over part is premulled */ +static void do_alphaover_key(bNode *node, float *out, float *src, float *over, float *fac) +{ + + if(over[3]<=0.0f) { + QUATCOPY(out, src); + } + else if(*fac==1.0f && over[3]>=1.0f) { + QUATCOPY(out, over); + } + else { + float premul= fac[0]*over[3]; + float mul= 1.0f - premul; + + out[0]= (mul*src[0]) + premul*over[0]; + out[1]= (mul*src[1]) + premul*over[1]; + out[2]= (mul*src[2]) + premul*over[2]; + out[3]= (mul*src[3]) + fac[0]*over[3]; + } +} + + +static void node_composit_exec_alphaover(void *data, bNode *node, bNodeStack **in, bNodeStack **out) +{ + /* stack order in: col col */ + /* stack order out: col */ + if(out[0]->hasoutput==0) + return; + + /* input no image? then only color operation */ + if(in[1]->data==NULL) { + do_alphaover_premul(node, out[0]->vec, in[1]->vec, in[2]->vec, in[0]->vec); + } + else { + /* make output size of input image */ + CompBuf *cbuf= in[1]->data; + CompBuf *stackbuf= alloc_compbuf(cbuf->x, cbuf->y, CB_RGBA, 1); /* allocs */ + + if(node->custom1) + composit3_pixel_processor(node, stackbuf, in[1]->data, in[1]->vec, in[2]->data, in[2]->vec, in[0]->data, in[0]->vec, do_alphaover_key, CB_RGBA, CB_RGBA, CB_VAL); + else + composit3_pixel_processor(node, stackbuf, in[1]->data, in[1]->vec, in[2]->data, in[2]->vec, in[0]->data, in[0]->vec, do_alphaover_premul, CB_RGBA, CB_RGBA, CB_VAL); + + out[0]->data= stackbuf; + } +} + +static int node_composit_buts_alphaover(uiBlock *block, bNodeTree *ntree, bNode *node, rctf *butr) +{ + if(block) { + + /* alpha type */ + uiDefButS(block, TOG, B_NODE_EXEC+node->nr, "ConvertPremul", + butr->xmin, butr->ymin, butr->xmax-butr->xmin, 19, + &node->custom1, 0, 0, 0, 0, ""); + } + return 19; +} + +bNodeType cmp_node_alphaover= { + /* type code */ CMP_NODE_ALPHAOVER, + /* name */ "AlphaOver", + /* width+range */ 80, 40, 120, + /* class+opts */ NODE_CLASS_OP_COLOR, NODE_OPTIONS, + /* input sock */ cmp_node_alphaover_in, + /* output sock */ cmp_node_alphaover_out, + /* storage */ "", + /* execfunc */ node_composit_exec_alphaover, + /* butfunc */ node_composit_buts_alphaover + +};
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