常量本版本新增

NGraphics|SECONDARY_STRIPE_SMOOTH_MIN

NGraphics|SECONDARY_STRIPE_SMOOTH_MINloading_screen/common/defines/graphic/00_graphics.txt:82

diagonal stripe smoothstep window for secondary country colour (cos threshold where transition begins)

定义loading_screen/common/defines/graphic/00_graphics.txt:82

0.55;