export function getCenterByAngle()

in src/core/prototypes/plot_segments/region_2d/utils.ts [22:196]

• 154 lines of code
• 38 McCabe index (conditional complexity)

export function getCenterByAngle(
  properties: PolarProperties,
  attrs: PolarAttributes
): CenterType {
  const isAutoMargin = properties.autoAlignment ?? false;
  const { angle1, angle2, x1, y1, x2, y2 } = attrs;
  let cx;
  let cy;
  let isHalf = false;
  let side = SIDE.NONE;
  let isRightHalf = false;
  let isCorner = false;
  if (isAutoMargin) {
    //pos case

    const angleDelta = Math.abs(angle1 - angle2);
    const startAngle = angle1 % 360;

    if (startAngle >= 0 && startAngle < 90) {
      //startAngle - 1 quadrant
      if (angleDelta <= 90 - startAngle) {
        //endAngle - 1 quadrant => move left bottom corner
        cx = x1;
        cy = y1;
        isCorner = true;
      } else if (angleDelta <= 180 - startAngle) {
        //endAngle - 4 quadrant => move left
        cx = x1;
        cy = (y2 + y1) / 2;
        isHalf = true;
        side = SIDE.VERTICAL;
      } else if (angleDelta + startAngle > 180) {
        //endAngle - 3 and 4 quadrants
        cx = (x2 + x1) / 2;
        cy = (y2 + y1) / 2;
      }
    } else if (startAngle >= 90 && startAngle < 180) {
      //startAngle - 4 quadrant
      if (angleDelta <= 180 - startAngle) {
        //endAngle - 4 quadrant => move left top corner
        cx = x1;
        cy = y2;
        isCorner = true;
      } else if (angleDelta <= 270 - startAngle) {
        //endAngle - 3 quadrant => move top
        cx = (x2 + x1) / 2;
        cy = y2;
        isHalf = true;
        side = SIDE.VERTICAL;
        isRightHalf = true;
      } else if (angleDelta + startAngle > 270) {
        //endAngle - 2 and 1 quadrants
        cx = (x2 + x1) / 2;
        cy = (y2 + y1) / 2;
      }
    } else if (startAngle >= 180 && startAngle < 270) {
      //startAngle - 3 quadrant
      if (angleDelta <= 270 - startAngle) {
        //endAngle - 3 quadrant => move right top corner
        cx = x2;
        cy = y2;
        isCorner = true;
      } else if (angleDelta <= 360 - startAngle) {
        //endAngle - 1 quadrant => move right
        cx = x2;
        cy = (y2 + y1) / 2;
        isHalf = true;
        side = SIDE.VERTICAL;
        isRightHalf = true;
      } else if (angleDelta + startAngle > 360) {
        //endAngle - 2 and 1 quadrants
        cx = (x2 + x1) / 2;
        cy = (y2 + y1) / 2;
      }
    } else if (startAngle >= 270 && startAngle < 360) {
      //startAngle - 2 quadrant
      if (angleDelta <= 360 - startAngle) {
        //endAngle - 2 quadrant => move right bottom corner
        cx = x2;
        cy = y1;
        isCorner = true;
      } else if (angleDelta <= 450 - startAngle) {
        //endAngle - 1 quadrant => move bottom
        cx = (x2 + x1) / 2;
        cy = y1;
        isHalf = true;
        side = SIDE.HORIZONTAL;
      } else if (angleDelta + startAngle > 450) {
        //endAngle - 2 and 1 quadrants
        cx = (x2 + x1) / 2;
        cy = (y2 + y1) / 2;
      }
    }

    //neg case
    if (startAngle < 0 && startAngle >= -90) {
      //startAngle - 3 quadrant
      if (angleDelta <= 90 - (90 + startAngle)) {
        //endAngle - 3 quadrant => move right bottom corner
        cx = x2;
        cy = y1;
        isCorner = true;
      } else if (angleDelta <= 180 - (90 + startAngle)) {
        //endAngle - 1 quadrant => move bottom
        cx = (x1 + x2) / 2;
        cy = y1;
        isHalf = true;
        side = SIDE.HORIZONTAL;
      } else if (angleDelta - startAngle >= 180) {
        //endAngle - 2 and 3 quadrants
        cx = (x2 + x1) / 2;
        cy = (y2 + y1) / 2;
      }
    } else if (startAngle <= -90 && startAngle >= -180) {
      //startAngle - 3 quadrant
      if (angleDelta <= 90 - (180 + startAngle)) {
        //endAngle - 3 quadrant => move right
        cx = x2;
        cy = y2;
        isCorner = true;
      } else if (angleDelta <= 180 - (180 + startAngle)) {
        //endAngle - 2 quadrant => move right
        cx = x2;
        cy = (y2 + y1) / 2;
        isHalf = true;
        side = SIDE.VERTICAL;
        isRightHalf = true;
      } else if (angleDelta - startAngle >= -270) {
        //endAngle - 1 and 4 quadrants
        cx = (x2 + x1) / 2;
        cy = (y2 + y1) / 2;
      }
    } else if (startAngle <= -180 && startAngle >= -270) {
      //startAngle - 4 quadrant
      if (angleDelta <= 90 - (270 + startAngle)) {
        //endAngle - 4 quadrant => move left top corner
        cx = x1;
        cy = y2;
        isCorner = true;
      } else if (angleDelta <= 180 - (270 + startAngle)) {
        //endAngle - 3 quadrant => move top
        cx = (x2 + x1) / 2;
        cy = y2;
        isHalf = true;
        side = SIDE.HORIZONTAL;
      } else if (angleDelta - startAngle >= -360) {
        //endAngle - 2 and 1 quadrants
        cx = (x2 + x1) / 2;
        cy = (y2 + y1) / 2;
      }
    } else if (startAngle <= -270 && startAngle > -360) {
      //startAngle - 1 quadrant
      if (angleDelta <= 90 - (360 + startAngle)) {
        //endAngle - 1 quadrant => move left bottom corner
        cx = x1;
        cy = y1;
        isCorner = true;
      } else if (angleDelta <= 180 - (360 + startAngle)) {
        //endAngle - 4 quadrant => move left
        cx = x1;
        cy = (y2 + y1) / 2;
        isHalf = true;
        side = SIDE.VERTICAL;
      } else if (angleDelta - startAngle >= -450) {
        //endAngle - 2 and 3 quadrants
        cx = (x2 + x1) / 2;
        cy = (y2 + y1) / 2;
      }
    }
  } else {
    cx = (x2 + x1) / 2;
    cy = (y2 + y1) / 2;
  }
  return { cx, cy, isHalf, side, isRightHalf, isCorner };
}