blendHardMix: Absolute Binary Separation

Threshold-Based Color Posterization

Hard Mix blending creates absolute binary separation through threshold-based posterization. This function processes vivid light blend results and converts them to pure black or white values, eliminating all intermediate tones to produce stark graphic separations.

The mathematical definition applies binary thresholding:

$$C_{result} = \begin{cases} 0 & \text{if } \text{vividLight}(C_{base}, C_{blend}) < 0.5 \\ 1 & \text{if } \text{vividLight}(C_{base}, C_{blend}) \geq 0.5 \end{cases}$$

This process creates maximum contrast by eliminating midtones, resulting in pure graphic separation between black and white regions based on the underlying vivid light calculation.

Binary Separation Properties

Property	Description	Mathematical Expression
Threshold Function	Binary decision at 0.5 threshold	$f(x) = x < 0.5 ? 0 : 1$
Vivid Light Basis	Uses vivid light as input calculation	$\text{input} = \text{vividLight}(base, blend)$
Absolute Values	Output restricted to pure black/white	$C_{out} \in \{0, 1\}$
Graphic Separation	Creates stark poster-like divisions	$\Delta C = 1$

ライブエディター

const fragment = () => {
      const rings = uv.sub(0.5).length().mul(8)
      const spiralBase = rings.sin().mul(0.4).add(0.6)
      const anglePattern = uv.y.sub(0.5).atan2(uv.x.sub(0.5)).mul(3)
      const blendValue = anglePattern.cos().mul(0.3).add(0.5)
      const baseColor = vec3(0.7, 0.5, 0.3).mul(spiralBase)
      const blendColor = vec3(blendValue)
      const result = blendHardMixVec3(baseColor, blendColor)
      return vec4(result, 1)
}

The demonstration shows Hard Mix's binary nature through spiral patterns. The base creates concentric variations while the blend provides angular thresholding. The function converts complex color relationships into stark black-white separations, revealing how Hard Mix eliminates gradual transitions to create absolute graphic boundaries that define pure contrast zones.