diff options
Diffstat (limited to 'src/cmssm.c')
| -rw-r--r-- | src/cmssm.c | 186 |
1 files changed, 93 insertions, 93 deletions
diff --git a/src/cmssm.c b/src/cmssm.c index 5fdc62e..0eaa9a8 100644 --- a/src/cmssm.c +++ b/src/cmssm.c @@ -3,22 +3,22 @@ // Little Color Management System // Copyright (c) 1998-2011 Marti Maria Saguer // -// Permission is hereby granted, free of charge, to any person obtaining -// a copy of this software and associated documentation files (the "Software"), -// to deal in the Software without restriction, including without limitation -// the rights to use, copy, modify, merge, publish, distribute, sublicense, -// and/or sell copies of the Software, and to permit persons to whom the Software +// Permission is hereby granted, free of charge, to any person obtaining +// a copy of this software and associated documentation files (the "Software"), +// to deal in the Software without restriction, including without limitation +// the rights to use, copy, modify, merge, publish, distribute, sublicense, +// and/or sell copies of the Software, and to permit persons to whom the Software // is furnished to do so, subject to the following conditions: // -// The above copyright notice and this permission notice shall be included in +// The above copyright notice and this permission notice shall be included in // all copies or substantial portions of the Software. // -// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, -// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO -// THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND -// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE -// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION -// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION +// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, +// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO +// THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND +// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE +// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION +// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. // //--------------------------------------------------------------------------------- @@ -36,7 +36,7 @@ // alpha = Hab // theta = L* -#define SECTORS 16 // number of divisions in alpha and theta +#define SECTORS 16 // number of divisions in alpha and theta // Spherical coordinates typedef struct { @@ -47,7 +47,7 @@ typedef struct { } cmsSpherical; -typedef enum { +typedef enum { GP_EMPTY, GP_SPECIFIED, GP_MODELED @@ -101,7 +101,7 @@ static cmsFloat64Number _cmsAtan2(cmsFloat64Number y, cmsFloat64Number x) { cmsFloat64Number a; - + // Deal with undefined case if (x == 0.0 && y == 0.0) return 0; @@ -120,20 +120,20 @@ void ToSpherical(cmsSpherical* sp, const cmsVEC3* v) { cmsFloat64Number L, a, b; - + L = v ->n[VX]; a = v ->n[VY]; b = v ->n[VZ]; - + sp ->r = sqrt( L*L + a*a + b*b ); if (sp ->r == 0) { sp ->alpha = sp ->theta = 0; return; } - - sp ->alpha = _cmsAtan2(a, b); - sp ->theta = _cmsAtan2(sqrt(a*a + b*b), L); + + sp ->alpha = _cmsAtan2(a, b); + sp ->theta = _cmsAtan2(sqrt(a*a + b*b), L); } @@ -153,7 +153,7 @@ void ToCartesian(cmsVEC3* v, const cmsSpherical* sp) cos_theta = cos((M_PI * sp ->theta) / 180.0); a = sp ->r * sin_theta * sin_alpha; - b = sp ->r * sin_theta * cos_alpha; + b = sp ->r * sin_theta * cos_alpha; L = sp ->r * cos_theta; v ->n[VX] = L; @@ -166,9 +166,9 @@ void ToCartesian(cmsVEC3* v, const cmsSpherical* sp) // The limits are the centers of each sector, so static void QuantizeToSector(const cmsSpherical* sp, int* alpha, int* theta) -{ - *alpha = (int) floor(((sp->alpha * (SECTORS)) / 360.0) ); - *theta = (int) floor(((sp->theta * (SECTORS)) / 180.0) ); +{ + *alpha = (int) floor(((sp->alpha * (SECTORS)) / 360.0) ); + *theta = (int) floor(((sp->theta * (SECTORS)) / 180.0) ); if (*alpha >= SECTORS) *alpha = SECTORS-1; @@ -183,19 +183,19 @@ void LineOf2Points(cmsLine* line, cmsVEC3* a, cmsVEC3* b) { _cmsVEC3init(&line ->a, a ->n[VX], a ->n[VY], a ->n[VZ]); - _cmsVEC3init(&line ->u, b ->n[VX] - a ->n[VX], - b ->n[VY] - a ->n[VY], - b ->n[VZ] - a ->n[VZ]); + _cmsVEC3init(&line ->u, b ->n[VX] - a ->n[VX], + b ->n[VY] - a ->n[VY], + b ->n[VZ] - a ->n[VZ]); } -// Evaluate parametric line +// Evaluate parametric line static void GetPointOfLine(cmsVEC3* p, const cmsLine* line, cmsFloat64Number t) { p ->n[VX] = line ->a.n[VX] + t * line->u.n[VX]; p ->n[VY] = line ->a.n[VY] + t * line->u.n[VY]; - p ->n[VZ] = line ->a.n[VZ] + t * line->u.n[VZ]; + p ->n[VZ] = line ->a.n[VZ] + t * line->u.n[VZ]; } @@ -217,7 +217,7 @@ static cmsBool ClosestLineToLine(cmsVEC3* r, const cmsLine* line1, const cmsLine* line2) { cmsFloat64Number a, b, c, d, e, D; - cmsFloat64Number sc, sN, sD; + cmsFloat64Number sc, sN, sD; cmsFloat64Number tc, tN, tD; cmsVEC3 w0; @@ -271,9 +271,9 @@ cmsBool ClosestLineToLine(cmsVEC3* r, const cmsLine* line1, const cmsLine* line2 } } else if (tN > tD) { // tc > 1 => the t=1 edge is visible - + tN = tD; - + // recompute sc for this edge if ((-d + b) < 0.0) sN = 0; @@ -302,7 +302,7 @@ cmsHANDLE CMSEXPORT cmsGBDAlloc(cmsContext ContextID) { cmsGDB* gbd = (cmsGDB*) _cmsMallocZero(ContextID, sizeof(cmsGDB)); if (gbd == NULL) return NULL; - + gbd -> ContextID = ContextID; return (cmsHANDLE) gbd; @@ -310,9 +310,9 @@ cmsHANDLE CMSEXPORT cmsGBDAlloc(cmsContext ContextID) void CMSEXPORT cmsGBDFree(cmsHANDLE hGBD) -{ +{ cmsGDB* gbd = (cmsGDB*) hGBD; - if (hGBD != NULL) + if (hGBD != NULL) _cmsFree(gbd->ContextID, (void*) gbd); } @@ -321,7 +321,7 @@ void CMSEXPORT cmsGBDFree(cmsHANDLE hGBD) static cmsGDBPoint* GetPoint(cmsGDB* gbd, const cmsCIELab* Lab, cmsSpherical* sp) { - cmsVEC3 v; + cmsVEC3 v; int alpha, theta; // Housekeeping @@ -329,12 +329,12 @@ cmsGDBPoint* GetPoint(cmsGDB* gbd, const cmsCIELab* Lab, cmsSpherical* sp) _cmsAssert(Lab != NULL); _cmsAssert(sp != NULL); - // Center L* by substracting half of its domain, that's 50 + // Center L* by substracting half of its domain, that's 50 _cmsVEC3init(&v, Lab ->L - 50.0, Lab ->a, Lab ->b); - + // Convert to spherical coordinates ToSpherical(sp, &v); - + if (sp ->r < 0 || sp ->alpha < 0 || sp->theta < 0) { cmsSignalError(gbd ->ContextID, cmsERROR_RANGE, "spherical value out of range"); return NULL; @@ -342,7 +342,7 @@ cmsGDBPoint* GetPoint(cmsGDB* gbd, const cmsCIELab* Lab, cmsSpherical* sp) // On which sector it falls? QuantizeToSector(sp, &alpha, &theta); - + if (alpha < 0 || theta < 0 || alpha >= SECTORS || theta >= SECTORS) { cmsSignalError(gbd ->ContextID, cmsERROR_RANGE, " quadrant out of range"); return NULL; @@ -352,7 +352,7 @@ cmsGDBPoint* GetPoint(cmsGDB* gbd, const cmsCIELab* Lab, cmsSpherical* sp) return &gbd ->Gamut[theta][alpha]; } -// Add a point to gamut descriptor. Point to add is in Lab color space. +// Add a point to gamut descriptor. Point to add is in Lab color space. // GBD is centered on a=b=0 and L*=50 cmsBool CMSEXPORT cmsGDBAddPoint(cmsHANDLE hGBD, const cmsCIELab* Lab) { @@ -388,7 +388,7 @@ cmsBool CMSEXPORT cmsGDBAddPoint(cmsHANDLE hGBD, const cmsCIELab* Lab) // Check if a given point falls inside gamut cmsBool CMSEXPORT cmsGDBCheckPoint(cmsHANDLE hGBD, const cmsCIELab* Lab) { - cmsGDB* gbd = (cmsGDB*) hGBD; + cmsGDB* gbd = (cmsGDB*) hGBD; cmsGDBPoint* ptr; cmsSpherical sp; @@ -406,7 +406,7 @@ cmsBool CMSEXPORT cmsGDBCheckPoint(cmsHANDLE hGBD, const cmsCIELab* Lab) // ----------------------------------------------------------------------------------------------------------------------- -// Find near sectors. The list of sectors found is returned on Close[]. +// Find near sectors. The list of sectors found is returned on Close[]. // The function returns the number of sectors as well. // 24 9 10 11 12 @@ -416,21 +416,21 @@ cmsBool CMSEXPORT cmsGDBCheckPoint(cmsHANDLE hGBD, const cmsCIELab* Lab) // 20 19 18 17 16 // // Those are the relative movements -// {-2,-2}, {-1, -2}, {0, -2}, {+1, -2}, {+2, -2}, +// {-2,-2}, {-1, -2}, {0, -2}, {+1, -2}, {+2, -2}, // {-2,-1}, {-1, -1}, {0, -1}, {+1, -1}, {+2, -1}, // {-2, 0}, {-1, 0}, {0, 0}, {+1, 0}, {+2, 0}, // {-2,+1}, {-1, +1}, {0, +1}, {+1, +1}, {+2, +1}, // {-2,+2}, {-1, +2}, {0, +2}, {+1, +2}, {+2, +2}}; -static -const struct _spiral { - +static +const struct _spiral { + int AdvX, AdvY; - - } Spiral[] = { {0, -1}, {+1, -1}, {+1, 0}, {+1, +1}, {0, +1}, {-1, +1}, - {-1, 0}, {-1, -1}, {-1, -2}, {0, -2}, {+1, -2}, {+2, -2}, - {+2, -1}, {+2, 0}, {+2, +1}, {+2, +2}, {+1, +2}, {0, +2}, + + } Spiral[] = { {0, -1}, {+1, -1}, {+1, 0}, {+1, +1}, {0, +1}, {-1, +1}, + {-1, 0}, {-1, -1}, {-1, -2}, {0, -2}, {+1, -2}, {+2, -2}, + {+2, -1}, {+2, 0}, {+2, +1}, {+2, +2}, {+1, +2}, {0, +2}, {-1, +2}, {-2, +2}, {-2, +1}, {-2, 0}, {-2, -1}, {-2, -2} }; #define NSTEPS (sizeof(Spiral) / sizeof(struct _spiral)) @@ -454,14 +454,14 @@ int FindNearSectors(cmsGDB* gbd, int alpha, int theta, cmsGDBPoint* Close[]) // Cycle at the begin if (a < 0) a = SECTORS + a; - if (t < 0) t = SECTORS + t; + if (t < 0) t = SECTORS + t; pt = &gbd ->Gamut[t][a]; - + if (pt -> Type != GP_EMPTY) { Close[nSectors++] = pt; - } + } } return nSectors; @@ -471,17 +471,17 @@ int FindNearSectors(cmsGDB* gbd, int alpha, int theta, cmsGDBPoint* Close[]) // Interpolate a missing sector. Method identifies whatever this is top, bottom or mid static cmsBool InterpolateMissingSector(cmsGDB* gbd, int alpha, int theta) -{ +{ cmsSpherical sp; cmsVEC3 Lab; cmsVEC3 Centre; cmsLine ray; int nCloseSectors; - cmsGDBPoint* Close[NSTEPS + 1]; + cmsGDBPoint* Close[NSTEPS + 1]; cmsSpherical closel, templ; cmsLine edge; int k, m; - + // Is that point already specified? if (gbd ->Gamut[theta][alpha].Type != GP_EMPTY) return TRUE; @@ -489,10 +489,10 @@ cmsBool InterpolateMissingSector(cmsGDB* gbd, int alpha, int theta) nCloseSectors = FindNearSectors(gbd, alpha, theta, Close); - // Find a central point on the sector + // Find a central point on the sector sp.alpha = (cmsFloat64Number) ((alpha + 0.5) * 360.0) / (SECTORS); sp.theta = (cmsFloat64Number) ((theta + 0.5) * 180.0) / (SECTORS); - sp.r = 50.0; + sp.r = 50.0; // Convert to Cartesian ToCartesian(&Lab, &sp); @@ -511,28 +511,28 @@ cmsBool InterpolateMissingSector(cmsGDB* gbd, int alpha, int theta) for(m = k+1; m < nCloseSectors; m++) { cmsVEC3 temp, a1, a2; - + // A line from sector to sector ToCartesian(&a1, &Close[k]->p); ToCartesian(&a2, &Close[m]->p); LineOf2Points(&edge, &a1, &a2); - // Find a line + // Find a line ClosestLineToLine(&temp, &ray, &edge); // Convert to spherical ToSpherical(&templ, &temp); - - if ( templ.r > closel.r && - templ.theta >= (theta*180.0/SECTORS) && + + if ( templ.r > closel.r && + templ.theta >= (theta*180.0/SECTORS) && templ.theta <= ((theta+1)*180.0/SECTORS) && templ.alpha >= (alpha*360.0/SECTORS) && templ.alpha <= ((alpha+1)*360.0/SECTORS)) { - closel = templ; - } + closel = templ; + } } } @@ -601,34 +601,34 @@ cmsBool cmsGBDdumpVRML(cmsHANDLE hGBD, const char* fname) fprintf (fp, "#VRML V2.0 utf8\n"); - // set the viewing orientation and distance + // set the viewing orientation and distance fprintf (fp, "DEF CamTest Group {\n"); - fprintf (fp, "\tchildren [\n"); - fprintf (fp, "\t\tDEF Cameras Group {\n"); - fprintf (fp, "\t\t\tchildren [\n"); - fprintf (fp, "\t\t\t\tDEF DefaultView Viewpoint {\n"); - fprintf (fp, "\t\t\t\t\tposition 0 0 340\n"); - fprintf (fp, "\t\t\t\t\torientation 0 0 1 0\n"); - fprintf (fp, "\t\t\t\t\tdescription \"default view\"\n"); - fprintf (fp, "\t\t\t\t}\n"); - fprintf (fp, "\t\t\t]\n"); - fprintf (fp, "\t\t},\n"); - fprintf (fp, "\t]\n"); - fprintf (fp, "}\n"); - - // Output the background stuff + fprintf (fp, "\tchildren [\n"); + fprintf (fp, "\t\tDEF Cameras Group {\n"); + fprintf (fp, "\t\t\tchildren [\n"); + fprintf (fp, "\t\t\t\tDEF DefaultView Viewpoint {\n"); + fprintf (fp, "\t\t\t\t\tposition 0 0 340\n"); + fprintf (fp, "\t\t\t\t\torientation 0 0 1 0\n"); + fprintf (fp, "\t\t\t\t\tdescription \"default view\"\n"); + fprintf (fp, "\t\t\t\t}\n"); + fprintf (fp, "\t\t\t]\n"); + fprintf (fp, "\t\t},\n"); + fprintf (fp, "\t]\n"); + fprintf (fp, "}\n"); + + // Output the background stuff fprintf (fp, "Background {\n"); fprintf (fp, "\tskyColor [\n"); fprintf (fp, "\t\t.5 .5 .5\n"); fprintf (fp, "\t]\n"); fprintf (fp, "}\n"); - // Output the shape stuff + // Output the shape stuff fprintf (fp, "Transform {\n"); fprintf (fp, "\tscale .3 .3 .3\n"); fprintf (fp, "\tchildren [\n"); - // Draw the axes as a shape: + // Draw the axes as a shape: fprintf (fp, "\t\tShape {\n"); fprintf (fp, "\t\t\tappearance Appearance {\n"); fprintf (fp, "\t\t\t\tmaterial Material {\n"); @@ -652,7 +652,7 @@ cmsBool cmsGBDdumpVRML(cmsHANDLE hGBD, const char* fname) fprintf (fp, "\t\t\t}\n"); fprintf (fp, "\t\t}\n"); - + fprintf (fp, "\t\tShape {\n"); fprintf (fp, "\t\t\tappearance Appearance {\n"); fprintf (fp, "\t\t\t\tmaterial Material {\n"); @@ -662,8 +662,8 @@ cmsBool cmsGBDdumpVRML(cmsHANDLE hGBD, const char* fname) fprintf (fp, "\t\t\t\t}\n"); fprintf (fp, "\t\t\t}\n"); fprintf (fp, "\t\t\tgeometry PointSet {\n"); - - // fill in the points here + + // fill in the points here fprintf (fp, "\t\t\t\tcoord Coordinate {\n"); fprintf (fp, "\t\t\t\t\tpoint [\n"); @@ -678,7 +678,7 @@ cmsBool cmsGBDdumpVRML(cmsHANDLE hGBD, const char* fname) fprintf (fp, "\t\t\t\t\t%g %g %g", v.n[0]+50, v.n[1], v.n[2]); - if ((j == SECTORS - 1) && (i == SECTORS - 1)) + if ((j == SECTORS - 1) && (i == SECTORS - 1)) fprintf (fp, "]\n"); else fprintf (fp, ",\n"); @@ -689,7 +689,7 @@ cmsBool cmsGBDdumpVRML(cmsHANDLE hGBD, const char* fname) - // fill in the face colors + // fill in the face colors fprintf (fp, "\t\t\t\tcolor Color {\n"); fprintf (fp, "\t\t\t\t\tcolor [\n"); @@ -697,14 +697,14 @@ cmsBool cmsGBDdumpVRML(cmsHANDLE hGBD, const char* fname) for (j=0; j < SECTORS; j++) { cmsVEC3 v; - + pt = &gbd ->Gamut[i][j]; - + ToCartesian(&v, &pt ->p); - if (pt ->Type == GP_EMPTY) + if (pt ->Type == GP_EMPTY) fprintf (fp, "\t\t\t\t\t%g %g %g", 0.0, 0.0, 0.0); else if (pt ->Type == GP_MODELED) @@ -714,13 +714,13 @@ cmsBool cmsGBDdumpVRML(cmsHANDLE hGBD, const char* fname) } - if ((j == SECTORS - 1) && (i == SECTORS - 1)) + if ((j == SECTORS - 1) && (i == SECTORS - 1)) fprintf (fp, "]\n"); else fprintf (fp, ",\n"); } fprintf (fp, "\t\t\t}\n"); - + fprintf (fp, "\t\t\t}\n"); fprintf (fp, "\t\t}\n"); |