diff options
| -rw-r--r-- | tests/png.c | 88 |
1 files changed, 59 insertions, 29 deletions
diff --git a/tests/png.c b/tests/png.c index 5b3f8c9..2b3bf5b 100644 --- a/tests/png.c +++ b/tests/png.c @@ -26,14 +26,18 @@ int main() { dmnsn_canvas *canvas; - dmnsn_sRGB sRGB; dmnsn_color color; + dmnsn_CIE_xyY xyY; + dmnsn_CIE_Lab Lab; + dmnsn_CIE_Luv Luv; + dmnsn_sRGB sRGB; FILE *ofile, *ifile; - unsigned int x, y; + unsigned int i, j; + const unsigned int x = 300, y = 300; dmnsn_set_resilience(DMNSN_SEVERITY_LOW); - canvas = dmnsn_new_canvas(333, 300); + canvas = dmnsn_new_canvas(3*x, y); if (!canvas) { fprintf(stderr, "--- Allocation of canvas failed! ---\n"); return EXIT_FAILURE; @@ -45,35 +49,61 @@ int main() { return EXIT_FAILURE; } - for (x = 0; x < canvas->x; ++x) { - for (y = 0; y < canvas->y; ++y) { - if (x < canvas->x/3) { - sRGB.R = 1.0; - sRGB.G = 0.0; - sRGB.B = 0.0; - } else if (x < 2*canvas->x/3) { - sRGB.R = 0.0; - sRGB.G = 1.0; - sRGB.B = 0.0; - } else { - sRGB.R = 0.0; - sRGB.G = 0.0; - sRGB.B = 1.0; + for (i = 0; i < x; ++i) { + for (j = 0; j < y; ++j) { + /* + * CIE xyY colorspace + */ + xyY.Y = 0.5; + xyY.x = ((double)i)/(x - 1); + xyY.y = ((double)j)/(y - 1); + + color = dmnsn_color_from_xyY(xyY); + sRGB = dmnsn_sRGB_from_color(color); + + if (sRGB.R > 1.0 || sRGB.G > 1.0 || sRGB.B > 1.0 + || sRGB.R < 0.0 || sRGB.G < 0.0 || sRGB.B < 0.0) { + /* Out of sRGB gamut */ + color.trans = 0.5; } - color = dmnsn_color_from_sRGB(sRGB); - - if (y < canvas->y/3) { - color.filter = 0.0; - color.trans = 0.0; - } else if (y < 2*canvas->y/3) { - color.filter = 1.0/3.0; - color.trans = 0.0; - } else { - color.filter = 1.0/3.0; - color.trans = 1.0/3.0; + + dmnsn_set_pixel(canvas, color, i, j); + + /* + * CIE Lab colorspace + */ + Lab.L = 75.0; + Lab.a = 200.0*(((double)i)/(x - 1) - 0.5); + Lab.b = 200.0*(((double)j)/(y - 1) - 0.5); + + color = dmnsn_color_from_Lab(Lab, dmnsn_whitepoint); + sRGB = dmnsn_sRGB_from_color(color); + + if (sRGB.R > 1.0 || sRGB.G > 1.0 || sRGB.B > 1.0 + || sRGB.R < 0.0 || sRGB.G < 0.0 || sRGB.B < 0.0) { + /* Out of sRGB gamut */ + color.trans = 0.5; + } + + dmnsn_set_pixel(canvas, color, i + x, j); + + /* + * CIE Luv colorspace + */ + Luv.L = 75.0; + Luv.u = 200.0*(((double)i)/(x - 1) - 0.5); + Luv.v = 200.0*(((double)j)/(y - 1) - 0.5); + + color = dmnsn_color_from_Luv(Luv, dmnsn_whitepoint); + sRGB = dmnsn_sRGB_from_color(color); + + if (sRGB.R > 1.0 || sRGB.G > 1.0 || sRGB.B > 1.0 + || sRGB.R < 0.0 || sRGB.G < 0.0 || sRGB.B < 0.0) { + /* Out of sRGB gamut */ + color.trans = 0.5; } - dmnsn_set_pixel(canvas, color, x, y); + dmnsn_set_pixel(canvas, color, i + 2*x, j); } } |