POINTS = 2000
DPI = 600
CVoigt[1, 1:7] = [153, -4.9, 1.9, 0, 0, 0]
CVoigt[2, 2:7] = [267, 1.42, 0, 0, 0]
CVoigt[3, 3:7] = [6.4, 0, 0, 0]
CVoigt[4, 4:7] = [2.34, 0, 0]
CVoigt[5, 5:7] = [2.35, 0]
CVoigt[6, 6] = 28
POINTS: How many points will be drawn.
DPI: The DPI of output figure.
Cvoigt: 7X7 matrix, but actually only (1-6, 1-6) will work.
Young_color = (55 / 255., 126 / 255., 184 / 255.)
LC_color = (50 / 255., 177 / 255., 101 / 255.)
shear_color_positive = (76 / 255., 114 / 255., 176 / 255.)
shear_color_negative = (228 / 255., 26 / 255., 28 / 255.)
Poisson_color_positive = (76 / 255., 114 / 255., 176 / 255.)
Poisson_color_negative = (228 / 255., 26 / 255., 28 / 255.)
color in RGB mode or RGBA mode, you can rewrite into (R,G,B,A) like (55 / 255., 126 / 255., 184 / 255., 0.5)