16 PetscErrorCode PetscDrawUtilitySetGamma(PetscReal g)  in PetscDrawUtilitySetGamma()  argument
19   Gamma = g;  in PetscDrawUtilitySetGamma()
33 static inline void PetscHlsToRgb(double h, double l, double s, double *r, double *g, double *b)  in PetscHlsToRgb()  argument
39     *g        = PetscHlsHelper(m1, m2, h);  in PetscHlsToRgb()
43     *r = *g = *b = l;  in PetscHlsToRgb()
47 static inline void PetscGammaCorrect(double *r, double *g, double *b)  in PetscGammaCorrect()  argument
51   *g               = (double)PetscPowReal((PetscReal)*g, igamma);  in PetscGammaCorrect()
62     double hue = maxhue * (double)i / (mapsize - 1), r, g, b;  in PetscDrawCmap_Hue()  local
63     PetscHlsToRgb(hue, lightness, saturation, &r, &g, &b);  in PetscDrawCmap_Hue()
64     PetscGammaCorrect(&r, &g, &b);  in PetscDrawCmap_Hue()
66     G[i] = (unsigned char)(255 * PetscMin(g, 1.0));  in PetscDrawCmap_Hue()
87     double m, r = 0, g = 0, b = 0;  in PetscDrawCmap_Jet()  local
94       g = 0;  in PetscDrawCmap_Jet()
99       g = m;  in PetscDrawCmap_Jet()
104       g = 1;  in PetscDrawCmap_Jet()
109       g = 1 - m;  in PetscDrawCmap_Jet()
114       g = 0;  in PetscDrawCmap_Jet()
119     G[i] = (unsigned char)(255 * PetscMin(g, 1.0));  in PetscDrawCmap_Jet()
133     double m, r = 0, g = 0, b = 0;  in PetscDrawCmap_Hot()  local
140       g = 0;  in PetscDrawCmap_Hot()
145       g = m;  in PetscDrawCmap_Hot()
150       g = 1;  in PetscDrawCmap_Hot()
155     G[i] = (unsigned char)(255 * PetscMin(g, 1.0));  in PetscDrawCmap_Hot()
168     double g = (7 * u + G[i] / 255.0) / 8;  in PetscDrawCmap_Bone()  local
171     G[i]     = (unsigned char)(255 * PetscMin(g, 1.0));  in PetscDrawCmap_Bone()
257       PetscReal g = PetscPowReal((PetscReal)G[i] / 255, gamma);  in PetscDrawUtilitySetCmap()  local
260       G[i]        = (unsigned char)(255 * PetscMin(g, (PetscReal)1.0));  in PetscDrawUtilitySetCmap()