Campbell Barton
2a2453d3e2
* glare * tonemap * lense distort * fast gauss blur http://projects.blender.org/tracker/?func=detail&atid=127&aid=7505&group_id=9 made fast gauss blur an option for the blur node rather then a separate node.
193 lines
6.5 KiB
C
193 lines
6.5 KiB
C
/**
|
|
*
|
|
* ***** 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): Alfredo de Greef (eeshlo)
|
|
*
|
|
* ***** END GPL LICENSE BLOCK *****
|
|
*/
|
|
|
|
#include "../CMP_util.h"
|
|
|
|
static bNodeSocketType cmp_node_lensdist_in[]= {
|
|
{ SOCK_RGBA, 1, "Image", 0.8f, 0.8f, 0.8f, 1.0f, 0.0f, 1.0f},
|
|
{ SOCK_VALUE, 1, "Distort", 0.f, 0.f, 0.f, 0.f, -0.999f, 1.f},
|
|
{ SOCK_VALUE, 1, "Dispersion", 0.f, 0.f, 0.f, 0.f, 0.f, 1.f},
|
|
{ -1, 0, "" }
|
|
};
|
|
static bNodeSocketType cmp_node_lensdist_out[]= {
|
|
{ SOCK_RGBA, 0, "Image", 0.0f, 0.0f, 0.0f, 1.0f, 0.0f, 1.0f},
|
|
{ -1, 0, "" }
|
|
};
|
|
|
|
|
|
static void lensDistort(CompBuf* dst, CompBuf* src, float kr, float kg, float kb, int jit, int proj, int fit)
|
|
{
|
|
int x, y, z;
|
|
const float cx = 0.5f*(float)dst->x, cy = 0.5f*(float)dst->y;
|
|
|
|
if (proj) {
|
|
// shift
|
|
CompBuf* tsrc = dupalloc_compbuf(src);
|
|
for (z=0; z<tsrc->type; ++z)
|
|
IIR_gauss(tsrc, (kr+0.5f)*(kr+0.5f), z, 1);
|
|
kr *= 20.f;
|
|
for (y=0; y<dst->y; y++) {
|
|
fRGB* colp = (fRGB*)&dst->rect[y*dst->x*dst->type];
|
|
const float v = (y + 0.5f)/(float)dst->y;
|
|
for (x=0; x<dst->x; x++) {
|
|
const float u = (x + 0.5f)/(float)dst->x;
|
|
qd_getPixelLerpChan(tsrc, (u*dst->x + kr) - 0.5f, v*dst->y - 0.5f, 0, colp[x]);
|
|
if (tsrc->type == CB_VAL)
|
|
colp[x][1] = tsrc->rect[x + y*tsrc->x];
|
|
else
|
|
colp[x][1] = tsrc->rect[(x + y*tsrc->x)*tsrc->type + 1];
|
|
qd_getPixelLerpChan(tsrc, (u*dst->x - kr) - 0.5f, v*dst->y - 0.5f, 2, colp[x]+2);
|
|
}
|
|
}
|
|
free_compbuf(tsrc);
|
|
}
|
|
else {
|
|
// Spherical
|
|
// Scale factor to make bottom/top & right/left sides fit in window after deform
|
|
// so in the case of pincushion (kn < 0), corners will be outside window.
|
|
// Now also optionally scales image such that black areas are not visible when distort factor is positive
|
|
// (makes distorted corners match window corners, but really only valid if mk<=0.5)
|
|
const float mk = MAX3(kr, kg, kb);
|
|
const float sc = (fit && (mk > 0.f)) ? (1.f/(1.f + 2.f*mk)) : (1.f/(1.f + mk));
|
|
const float drg = 4.f*(kg - kr), dgb = 4.f*(kb - kg);
|
|
kr *= 4.f, kg *= 4.f, kb *= 4.f;
|
|
|
|
for (y=0; y<dst->y; y++) {
|
|
fRGB* colp = (fRGB*)&dst->rect[y*dst->x*dst->type];
|
|
const float v = sc*((y + 0.5f) - cy)/cy;
|
|
for (x=0; x<dst->x; x++) {
|
|
int dr = 0, dg = 0, db = 0;
|
|
float d, t, ln[6] = {0, 0, 0, 0, 0, 0};
|
|
fRGB c1, tc = {0, 0, 0, 0};
|
|
const float u = sc*((x + 0.5f) - cx)/cx;
|
|
int sta = 0, mid = 0, end = 0;
|
|
if ((t = 1.f - kr*(u*u + v*v)) >= 0.f) {
|
|
d = 1.f/(1.f + sqrtf(t));
|
|
ln[0] = (u*d + 0.5f)*dst->x - 0.5f, ln[1] = (v*d + 0.5f)*dst->y - 0.5f;
|
|
sta = 1;
|
|
}
|
|
if ((t = 1.f - kg*(u*u + v*v)) >= 0.f) {
|
|
d = 1.f/(1.f + sqrtf(t));
|
|
ln[2] = (u*d + 0.5f)*dst->x - 0.5f, ln[3] = (v*d + 0.5f)*dst->y - 0.5f;
|
|
mid = 1;
|
|
}
|
|
if ((t = 1.f - kb*(u*u + v*v)) >= 0.f) {
|
|
d = 1.f/(1.f + sqrtf(t));
|
|
ln[4] = (u*d + 0.5f)*dst->x - 0.5f, ln[5] = (v*d + 0.5f)*dst->y - 0.5f;
|
|
end = 1;
|
|
}
|
|
|
|
if (sta && mid && end) {
|
|
// RG
|
|
const int dx = ln[2] - ln[0], dy = ln[3] - ln[1];
|
|
const float dsf = sqrtf(dx*dx + dy*dy) + 1.f;
|
|
const int ds = (int)(jit ? ((dsf < 4.f) ? 2.f : sqrtf(dsf)) : dsf);
|
|
const float sd = 1.f/(float)ds;
|
|
for (z=0; z<ds; ++z) {
|
|
const float tz = ((float)z + (jit ? BLI_frand() : 0.5f))*sd;
|
|
t = 1.f - (kr + tz*drg)*(u*u + v*v);
|
|
d = 1.f / (1.f + sqrtf(t));
|
|
qd_getPixelLerp(src, (u*d + 0.5f)*dst->x - 0.5f, (v*d + 0.5f)*dst->y - 0.5f, c1);
|
|
if (src->type == CB_VAL) c1[1] = c1[2] = c1[0];
|
|
tc[0] += (1.f-tz)*c1[0], tc[1] += tz*c1[1];
|
|
dr++, dg++;
|
|
}
|
|
// GB
|
|
{
|
|
const int dx = ln[4] - ln[2], dy = ln[5] - ln[3];
|
|
const float dsf = sqrtf(dx*dx + dy*dy) + 1.f;
|
|
const int ds = (int)(jit ? ((dsf < 4.f) ? 2.f : sqrtf(dsf)) : dsf);
|
|
const float sd = 1.f/(float)ds;
|
|
for (z=0; z<ds; ++z) {
|
|
const float tz = ((float)z + (jit ? BLI_frand() : 0.5f))*sd;
|
|
t = 1.f - (kg + tz*dgb)*(u*u + v*v);
|
|
d = 1.f / (1.f + sqrtf(t));
|
|
qd_getPixelLerp(src, (u*d + 0.5f)*dst->x - 0.5f, (v*d + 0.5f)*dst->y - 0.5f, c1);
|
|
if (src->type == CB_VAL) c1[1] = c1[2] = c1[0];
|
|
tc[1] += (1.f-tz)*c1[1], tc[2] += tz*c1[2];
|
|
dg++, db++;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (dr) colp[x][0] = 2.f*tc[0] / (float)dr;
|
|
if (dg) colp[x][1] = 2.f*tc[1] / (float)dg;
|
|
if (db) colp[x][2] = 2.f*tc[2] / (float)db;
|
|
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
static void node_composit_exec_lensdist(void *data, bNode *node, bNodeStack **in, bNodeStack **out)
|
|
{
|
|
CompBuf *new, *img = in[0]->data;
|
|
NodeLensDist* nld = node->storage;
|
|
const float k = MAX2(MIN2(in[1]->vec[0], 1.f), -0.999f);
|
|
// smaller dispersion range for somewhat more control
|
|
const float d = 0.25f*MAX2(MIN2(in[2]->vec[0], 1.f), 0.f);
|
|
const float kr = MAX2(MIN2((k+d), 1.f), -0.999f), kb = MAX2(MIN2((k-d), 1.f), -0.999f);
|
|
|
|
if ((img==NULL) || (out[0]->hasoutput==0)) return;
|
|
|
|
new = alloc_compbuf(img->x, img->y, CB_RGBA, 1);
|
|
|
|
lensDistort(new, img, (nld->proj ? d : kr), k, kb, nld->jit, nld->proj, nld->fit);
|
|
|
|
out[0]->data = new;
|
|
}
|
|
|
|
|
|
static void node_composit_init_lensdist(bNode* node)
|
|
{
|
|
NodeLensDist *nld = MEM_callocN(sizeof(NodeLensDist), "node lensdist data");
|
|
nld->jit = nld->proj = nld->fit = 0;
|
|
node->storage = nld;
|
|
}
|
|
|
|
|
|
bNodeType cmp_node_lensdist = {
|
|
/* *next,*prev */ NULL, NULL,
|
|
/* type code */ CMP_NODE_LENSDIST,
|
|
/* name */ "Lens Distortion",
|
|
/* width+range */ 150, 120, 200,
|
|
/* class+opts */ NODE_CLASS_DISTORT, NODE_OPTIONS,
|
|
/* input sock */ cmp_node_lensdist_in,
|
|
/* output sock */ cmp_node_lensdist_out,
|
|
/* storage */ "NodeLensDist",
|
|
/* execfunc */ node_composit_exec_lensdist,
|
|
/* butfunc */ NULL,
|
|
/* initfunc */ node_composit_init_lensdist,
|
|
/* freestoragefunc */ node_free_standard_storage,
|
|
/* copystoragefunc */ node_copy_standard_storage,
|
|
/* id */ NULL
|
|
};
|