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package main
type Color struct {
r, g, b float64
}
func (color Color) ToPixel() Pixel {
return Pixel{int(color.r * 255), int(color.g * 255), int(color.b * 255)}
}
func LinearBlend(color1 Color, color2 Color, param float64) Color {
return Color{
param*color1.r + (1.0-param)*color2.r,
param*color1.g + (1.0-param)*color2.g,
param*color1.b + (1.0-param)*color2.b,
}
}
func RayColor(ray Ray, hitable Hitable) Color {
if hitable.Hit(ray) {
return Color{1.0, 0.0, 0.0}
}
param := 0.5 * (ray.direction.Unit().y + 1)
return LinearBlend(Color{0.5, 0.7, 1.0}, Color{1.0, 1.0, 1.0}, param)
}
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