Function RadialCode

src/pdf/PDFGradientShader.cpp:366–383

}

void RadialCode(const GradientInfo& info, const Matrix& /*perspectiveRemover*/,
                const std::shared_ptr<MemoryWriteStream>& function) {
  function->writeText("{");

  // Find the distance from the origin.
  function->writeText(
      "dup "      // x y y
      "mul "      // x y^2
      "exch "     // y^2 x
      "dup "      // y^2 x x
      "mul "      // y^2 x^2
      "add "      // y^2+x^2
      "sqrt\n");  // sqrt(y^2+x^2)

  TileModeCode(TileMode::Clamp, function);
  GradientFunctionCode(info, function);
  function->writeText("}");
}

/**  
 * Conical gradient shader, based on the Canvas spec for radial gradients