Amenadiel\JpGraph\Plot\PiePlot3D::Pie3D()

Complexity

Conditions	67
Paths	> 20000

Size

Total Lines	390
Code Lines	208

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	142
CRAP Score	188.81

Importance

Changes

0

<?php
    public function Pie3D(
        $aaoption,
        $img,
        $data,
        $colors,
        $xc,
        $yc,
        $d,
        $angle,
        $z,
        $shadow = 0.65,
        $startangle = 0,
        $edgecolor = '',
        $edgeweight = 1
    ) {
        /**
         * As usual the algorithm get more complicated than I originally
         * // envisioned. I believe that this is as simple as it is possible
         * // to do it with the features I want. It's a good exercise to start
         * // thinking on how to do this to convince your self that all this
         * // is really needed for the general case.
         * //
         * // The algorithm two draw 3D pies without "real 3D" is done in
         * // two steps.
         * // First imagine the pie cut in half through a thought line between
         * // 12'a clock and 6'a clock. It now easy to imagine that we can plot
         * // the individual slices for each half by starting with the topmost
         * // pie slice and continue down to 6'a clock.
         * //
         * // In the algortithm this is done in three principal steps
         * // Step 1. Do the knife cut to ensure by splitting slices that extends
         * // over the cut line. This is done by splitting the original slices into
         * // upto 3 subslices.
         * // Step 2. Find the top slice for each half
         * // Step 3. Draw the slices from top to bottom
         * //
         * // The thing that slightly complicates this scheme with all the
         * // angle comparisons below is that we can have an arbitrary start
         * // angle so we must take into account the different equivalence classes.
         * // For the same reason we must walk through the angle array in a
         * // modulo fashion.
         * //
         * // Limitations of algorithm:
         * // * A small exploded slice which crosses the 270 degree point
         * //   will get slightly nagged close to the center due to the fact that
         * //   we print the slices in Z-order and that the slice left part
         * //   get printed first and might get slightly nagged by a larger
         * //   slice on the right side just before the right part of the small
         * //   slice. Not a major problem though.
         */
        // Determine the height of the ellippse which gives an
        // indication of the inclination angle
        $h   = ($angle / 90.0) * $d;
        $sum = 0;
        for ($i = 0; $i < safe_count($data); ++$i) {
            $sum += $data[$i];
        }

        // Special optimization
        if ($sum == 0) {

The condition $sum == 0 is always true.

            return;
        }

        if ($this->labeltype == 2) {
            $this->adjusted_data = $this->AdjPercentage($data);
        }

        // Setup the start
        $accsum = 0;

The assignment to $accsum is dead and can be removed.

        $a      = $startangle;
        $a      = $this->NormAngle($a);

        //
        // Step 1 . Split all slices that crosses 90 or 270
        //
        $idx        = 0;
        $adjexplode = [];
        $numcolors  = safe_count($colors);
        for ($i = 0; $i < safe_count($data); ++$i, ++$idx) {
            $da = $data[$i] / $sum * 360;

            if (empty($this->explode_radius[$i])) {
                $this->explode_radius[$i] = 0;
            }

            $expscale = 1;
            if ($aaoption == 1) {
                $expscale = 2;
            }

            $la      = $a + $da / 2;
            $explode = [$xc + $this->explode_radius[$i] * cos($la * M_PI / 180) * $expscale,
                $yc - $this->explode_radius[$i] * sin($la * M_PI / 180) * ($h / $d) * $expscale, ];
            $adjexplode[$idx]   = $explode;
            $labeldata[$i]      = [$la, $explode[0], $explode[1]];
            $originalangles[$i] = [$a, $a + $da];

            $ne = $this->NormAngle($a + $da);
            if ($da <= 180) {
                // If the slice size is <= 90 it can at maximum cut across
                // one boundary (either 90 or 270) where it needs to be split
                $split = -1; // no split
                if (($da <= 90 && ($a <= 90 && $ne > 90)) ||
                    (($da <= 180 && $da > 90) && (($a < 90 || $a >= 270) && $ne > 90))) {
                    $split = 90;
                } elseif (($da <= 90 && ($a <= 270 && $ne > 270)) ||
                    (($da <= 180 && $da > 90) && ($a >= 90 && $a < 270 && ($a + $da) > 270))) {
                    $split = 270;
                }
                if ($split > 0) {
                    // split in two
                    $angles[$idx]     = [$a, $split];
                    $adjcolors[$idx]  = $colors[$i % $numcolors];
                    $adjexplode[$idx] = $explode;
                    $angles[++$idx]   = [$split, $ne];
                    $adjcolors[$idx]  = $colors[$i % $numcolors];
                    $adjexplode[$idx] = $explode;
                } else {
                    // no split
                    $angles[$idx]     = [$a, $ne];
                    $adjcolors[$idx]  = $colors[$i % $numcolors];
                    $adjexplode[$idx] = $explode;
                }
            } else {
                // da>180
                // Slice may, depending on position, cross one or two
                // bonudaries

                if ($a < 90) {
                    $split = 90;
                } elseif ($a <= 270) {
                    $split = 270;
                } else {
                    $split = 90;
                }

                $angles[$idx]     = [$a, $split];
                $adjcolors[$idx]  = $colors[$i % $numcolors];
                $adjexplode[$idx] = $explode;
                //if( $a+$da > 360-$split ) {
                // For slices larger than 270 degrees we might cross
                // another boundary as well. This means that we must
                // split the slice further. The comparison gets a little
                // bit complicated since we must take into accound that
                // a pie might have a startangle >0 and hence a slice might
                // wrap around the 0 angle.
                // Three cases:
                //  a) Slice starts before 90 and hence gets a split=90, but
                //     we must also check if we need to split at 270
                //  b) Slice starts after 90 but before 270 and slices
                //     crosses 90 (after a wrap around of 0)
                //  c) If start is > 270 (hence the firstr split is at 90)
                //     and the slice is so large that it goes all the way
                //     around 270.
                if (($a < 90 && ($a + $da > 270)) || ($a > 90 && $a <= 270 && ($a + $da > 360 + 90)) || ($a > 270 && $this->NormAngle($a + $da) > 270)) {
                    $angles[++$idx]   = [$split, 360 - $split];
                    $adjcolors[$idx]  = $colors[$i % $numcolors];
                    $adjexplode[$idx] = $explode;
                    $angles[++$idx]   = [360 - $split, $ne];
                    $adjcolors[$idx]  = $colors[$i % $numcolors];
                    $adjexplode[$idx] = $explode;
                } else {
                    // Just a simple split to the previous decided
                    // angle.
                    $angles[++$idx]   = [$split, $ne];
                    $adjcolors[$idx]  = $colors[$i % $numcolors];
                    $adjexplode[$idx] = $explode;
                }
            }
            $a += $da;
            $a = $this->NormAngle($a);
        }

        // Total number of slices
        $n = safe_count($angles);

The variable $angles does not seem to be defined for all execution paths leading up to this point.

        for ($i = 0; $i < $n; ++$i) {
            list($dbgs, $dbge) = $angles[$i];

This list assign is not used and could be removed.

        }

        //
        // Step 2. Find start index (first pie that starts in upper left quadrant)
        //
        $minval = $angles[0][0];
        $min    = 0;
        for ($i = 0; $i < $n; ++$i) {
            if ($angles[$i][0] < $minval) {
                $minval = $angles[$i][0];
                $min    = $i;
            }
        }
        $j   = $min;
        $cnt = 0;
        while ($angles[$j][1] <= 90) {
            ++$j;
            if ($j >= $n) {
                $j = 0;
            }
            if ($cnt > $n) {
                Util\JpGraphError::RaiseL(14005);
                //("Pie3D Internal error (#1). Trying to wrap twice when looking for start index");
            }
            ++$cnt;
        }
        $start = $j;

        //
        // Step 3. Print slices in z-order
        //
        $cnt = 0;

        // First stroke all the slices between 90 and 270 (left half circle)
        // counterclockwise

        while ($angles[$j][0] < 270 && $aaoption !== 2) {
            list($x, $y) = $adjexplode[$j];

            $this->Pie3DSlice(
                $img,
                $x,
                $y,
                $d,
                $h,
                $angles[$j][0],
                $angles[$j][1],
                $z,
                $adjcolors[$j],

The variable $adjcolors does not seem to be defined for all execution paths leading up to this point.

                $shadow
            );

            $last = [$x, $y, $j];

            ++$j;
            if ($j >= $n) {
                $j = 0;
            }

            if ($cnt > $n) {
                Util\JpGraphError::RaiseL(14006);
                //("Pie3D Internal Error: Z-Sorting algorithm for 3D Pies is not working properly (2). Trying to wrap twice while stroking.");
            }
            ++$cnt;
        }

        $slice_left = $n - $cnt;
        $j          = $start - 1;
        if ($j < 0) {
            $j = $n - 1;
        }

        $cnt = 0;

        // The stroke all slices from 90 to -90 (right half circle)
        // clockwise
        while ($cnt < $slice_left && $aaoption !== 2) {
            list($x, $y) = $adjexplode[$j];

            $this->Pie3DSlice(
                $img,
                $x,
                $y,
                $d,
                $h,
                $angles[$j][0],
                $angles[$j][1],
                $z,
                $adjcolors[$j],
                $shadow
            );
            --$j;
            if ($cnt > $n) {
                Util\JpGraphError::RaiseL(14006);
                //("Pie3D Internal Error: Z-Sorting algorithm for 3D Pies is not working properly (2). Trying to wrap twice while stroking.");
            }
            if ($j < 0) {
                $j = $n - 1;
            }

            ++$cnt;
        }

        // Now do a special thing. Stroke the last slice on the left
        // halfcircle one more time.  This is needed in the case where
        // the slice close to 270 have been exploded. In that case the
        // part of the slice close to the center of the pie might be
        // slightly nagged.
        if ($aaoption !== 2) {
            $this->Pie3DSlice(
                $img,
                $last[0],

The variable $last does not seem to be defined for all execution paths leading up to this point.

                $last[1],
                $d,
                $h,
                $angles[$last[2]][0],
                $angles[$last[2]][1],
                $z,
                $adjcolors[$last[2]],
                $shadow
            );
        }

        if ($aaoption !== 1) {
            // Now print possible labels and add csim
            $this->value->ApplyFont($img);
            $margin = $img->GetFontHeight() / 2 + $this->value->margin;
            for ($i = 0; $i < safe_count($data); ++$i) {
                $la = $labeldata[$i][0];

The variable $labeldata does not seem to be defined for all execution paths leading up to this point.

                $x  = $labeldata[$i][1] + cos($la * M_PI / 180) * ($d + $margin) * $this->ilabelposadj;
                $y  = $labeldata[$i][2] - sin($la * M_PI / 180) * ($h + $margin) * $this->ilabelposadj;
                if ($this->ilabelposadj >= 1.0) {
                    if ($la > 180 && $la < 360) {
                        $y += $z;
                    }
                }
                if ($this->labeltype == 0) {
                    if ($sum > 0) {
                        $l = 100 * $data[$i] / $sum;
                    } else {
                        $l = 0;
                    }
                } elseif ($this->labeltype == 1) {
                    $l = $data[$i];
                } else {
                    $l = $this->adjusted_data[$i];
                }
                if (isset($this->labels[$i]) && is_string($this->labels[$i])) {
                    $l = sprintf($this->labels[$i], $l);
                }

                $this->StrokeLabels($l, $img, $labeldata[$i][0] * M_PI / 180, $x, $y, $z);

                $this->Add3DSliceToCSIM(
                    $i,
                    $labeldata[$i][1],
                    $labeldata[$i][2],
                    $h * 2,
                    $d * 2,
                    $z,
                    $originalangles[$i][0],

The variable $originalangles does not seem to be defined for all execution paths leading up to this point.

                    $originalangles[$i][1]
                );
            }
        }

        //
        // Finally add potential lines in pie
        //

        if ($edgecolor == '' || $aaoption !== 0) {
            return;
        }

        $accsum = 0;
        $a      = $startangle;
        $a      = $this->NormAngle($a);

        $a *= M_PI / 180.0;

        $idx = 0;
        $img->PushColor($edgecolor);
        $img->SetLineWeight($edgeweight);

        $fulledge = true;
        for ($i = 0; $i < safe_count($data) && $fulledge; ++$i) {
            if (empty($this->explode_radius[$i])) {
                $this->explode_radius[$i] = 0;
            }
            if ($this->explode_radius[$i] > 0) {
                $fulledge = false;
            }
        }

        for ($i = 0; $i < safe_count($data); ++$i, ++$idx) {
            $da = $data[$i] / $sum * 2 * M_PI;
            $this->StrokeFullSliceFrame(
                $img,
                $xc,
                $yc,
                $a,
                $a + $da,
                $d,
                $h,
                $z,
                $edgecolor,
                $this->explode_radius[$i],
                $fulledge
            );
            $a += $da;
        }
        $img->PopColor();
    }