Function applyColorModifiers

apps/sim/lib/pptx-renderer/utils/color.ts:162–218

(
  hex: string,
  modifiers: ColorModifier[]
)

 * Returns the final hex color and alpha value.
 */
export function applyColorModifiers(
  hex: string,
  modifiers: ColorModifier[]
): { color: string; alpha: number } {
  let color = hex
  let alpha = 1

  for (const mod of modifiers) {
    switch (mod.name) {
      case 'tint':
      case 'a:tint':
        color = applyTint(color, mod.val)
        break
      case 'shade':
      case 'a:shade':
        color = applyShade(color, mod.val)
        break
      case 'lumMod':
      case 'a:lumMod':
        color = applyLumMod(color, mod.val)
        break
      case 'lumOff':
      case 'a:lumOff':
        color = applyLumOff(color, mod.val)
        break
      case 'satMod':
      case 'a:satMod':
        color = applySatMod(color, mod.val)
        break
      case 'hueMod':
      case 'a:hueMod':
        color = applyHueMod(color, mod.val)
        break
      case 'hueOff':
      case 'a:hueOff':
        color = applyHueOff(color, mod.val)
        break
      case 'satOff':
      case 'a:satOff':
        color = applySatOff(color, mod.val)
        break
      case 'alpha':
      case 'a:alpha':
        alpha = applyAlpha(mod.val)
        break
      case 'alphaOff':
      case 'a:alphaOff':
        alpha = Math.max(0, Math.min(1, alpha + mod.val / 100000))
        break
      default:
        // Unknown modifier - skip silently
        break
    }
  }

  return { color, alpha }
}