void VideoFrameTransform::transformCubeFacePos()

in Transform360/Library/VideoFrameTransform.cpp [835:901]

• 65 lines of code
• 25 McCabe index (conditional complexity)

void VideoFrameTransform::transformCubeFacePos(
  float tx,
  float ty,
  float tz,
  float *outX,
  float *outY
) {
  float x, y;

  if (tz <= -kCubemapSideDistance) {
    x = tx / tz;
    y = ty / tz;
    if (x >= -1.0 && x <= 1.0 && y >= -1.0 && y <= 1.0) {
      *outX = (5.0f + x / ctx_.input_expand_coef) / 6.0f;
      *outY = (3.0f + y / ctx_.input_expand_coef) / 4.0f;
      return;
    }
  }
  if (tz >= kCubemapSideDistance) {
    x = tx / tz;
    y = ty / tz;
    if (x >= -1.0 && x <= 1.0 && y >= -1.0 && y <= 1.0) {
      *outX = (3.0f + x / ctx_.input_expand_coef) / 6.0f;
      *outY = (3.0f - y / ctx_.input_expand_coef) / 4.0f;
      return;
    }
  }
  if (tx <= -kCubemapSideDistance) {
    x = tz / tx;
    y = ty / tx;
    if (x >= -1.0 && x <= 1.0 && y >= -1.0 && y <= 1.0) {
      *outX = (3.0f - x / ctx_.input_expand_coef) / 6.0f;
      *outY = (1.0f + y / ctx_.input_expand_coef) / 4.0f;
      return;
    }
  }
  if (tx >= kCubemapSideDistance) {
    x = tz / tx;
    y = ty / tx;
    if (x >= -1.0 && x <= 1.0 && y >= -1.0 && y <= 1.0) {
      *outX = (1.0f - x / ctx_.input_expand_coef) / 6.0f;
      *outY = (1.0f - y / ctx_.input_expand_coef) / 4.0f;
      return;
    }
  }
  if (ty <= -kCubemapSideDistance) {
    x = tx / ty;
    y = tz / ty;
    if (x >= -1.0 && x <= 1.0 && y >= -1.0 && y <= 1.0) {
      *outX = (1.0f - x / ctx_.input_expand_coef) / 6.0f;
      *outY = (3.0f + y / ctx_.input_expand_coef) / 4.0f;
      return;
    }
  }
  if (ty >= kCubemapSideDistance) {
    x = tx / ty;
    y = tz / ty;
    if (x >= -1.0 && x <= 1.0 && y >= -1.0 && y <= 1.0) {
      *outX = (5.0f + x / ctx_.input_expand_coef) / 6.0f;
      *outY = (1.0f + y / ctx_.input_expand_coef) / 4.0f;
      return;
    }
  }
  // Return outside coordinates.
  *outX = -1.0f;
  *outY = 0.0f;
}