ID = $ID; $this->NameLength = mb_strlen($Name, 'utf8'); $this->Name = display_str($Name); } } class ARTISTS_SIMILAR extends ARTIST{ var $Artists = array(); var $TotalScore = 0; var $xValues = array(WIDTH=>1); var $yValues = array(HEIGHT=>1); var $LargestDecimal = 0; var $LowestDecimal = 1; function dump_data() { return serialize(array(time(), $this->Name, $this->x, $this->y, serialize($this->Artists), serialize($this->Similar))); } function load_data($Data) { list($LastUpdated, $this->Name, $this->x, $this->y, $this->Artists, $this->Similar) = unserialize($Data); $this->Artists = unserialize($this->Artists); $this->Similar = unserialize($this->Similar); } function set_up() { $this->x = ceil(WIDTH / 2); $this->y = ceil(HEIGHT / 2); $this->xValues[$this->x] = $this->ID; $this->yValues[$this->y] = $this->ID; global $DB; // Get artists that are directly similar to the artist $ArtistIDs = array(); $DB->query(" SELECT s2.ArtistID, ag.Name, ass.Score FROM artists_similar AS s1 JOIN artists_similar AS s2 ON s1.SimilarID=s2.SimilarID AND s1.ArtistID!=s2.ArtistID JOIN artists_similar_scores AS ass ON ass.SimilarID=s1.SimilarID JOIN artists_group AS ag ON ag.ArtistID=s2.ArtistID WHERE s1.ArtistID=".$this->ID." ORDER BY ass.Score DESC LIMIT 14"); if ($DB->record_count() == 0) { return; } // Build into array. Each artist is its own object in $this->Artists while (list($ArtistID, $Name, $Score) = $DB->next_record(MYSQLI_NUM, false)) { if ($Score < 0) { continue; } $this->Artists[$ArtistID] = new ARTIST($ArtistID, $Name); $this->Similar[$ArtistID] = array('ID'=>$ArtistID,'Score'=>$Score); $this->TotalScore += $Score; $ArtistIDs[] = $ArtistID; } // Get similarities between artists on the map $DB->query(" SELECT s1.ArtistID, s2.ArtistID FROM artists_similar AS s1 JOIN artists_similar AS s2 ON s1.SimilarID=s2.SimilarID AND s1.ArtistID!=s2.ArtistID JOIN artists_similar_scores AS ass ON ass.SimilarID=s1.SimilarID JOIN artists_group AS a ON a.ArtistID=s2.ArtistID WHERE s1.ArtistID IN(".implode(',',$ArtistIDs).') AND s2.ArtistID IN('.implode(',',$ArtistIDs).')'); // Build into array while (list($Artist1ID, $Artist2ID) = $DB->next_record()) { $this->Artists[$Artist1ID]->Similar[$Artist2ID] = array('ID'=>$Artist2ID); } // Calculate decimal point scores between artists foreach ($this->Similar as $SimilarArtist) { list($ArtistID, $Similar) = array_values($SimilarArtist); $this->Similar[$ArtistID]['Decimal'] = $this->similarity($Similar['Score'], $this->TotalScore); if ($this->Similar[$ArtistID]['Decimal'] < $this->LowestDecimal) { $this->LowestDecimal = $this->Similar[$ArtistID]['Decimal']; } if ($this->Similar[$ArtistID]['Decimal'] > $this->LargestDecimal) { $this->LargestDecimal = $this->Similar[$ArtistID]['Decimal']; } } reset($this->Artists); } function set_positions() { $xValues = array(); // Possible x values $Root = ceil(WIDTH / 4); // Half-way into half of the image $Offset = 4; // Distance from the root (a quarter of the way into the image) to the x value // The number of artists placed in the top or the bottom $NumTop = 0; $NumBottom = 0; // The number of artists placed in the left or the right $NumLeft = 0; $NumRight = 0; $Multiplier = 0; // Build up an impressive list of possible x values // We later iterate through these, and pick out the ones we want // These x values are all below WIDTH/2 (all on the left) // The script later chooses which side to put them on // We create more very low x values because they're more likely to be skipped for ($i = 0; $i <= count($this->Artists) * 4; $i++) { if ($Offset >= ((WIDTH / 4))) { $Offset = $Offset % (WIDTH / 4); } $Plus = $Root + $Offset; // Point on the right of the root $Minus = abs($Root - $Offset); // Point on the left of the root $xValues[$Plus] = $Plus; $xValues[$Minus] = $Minus; // Throw in an extra x value closer to the edge, because they're more likely to be skipped if ($Minus > 30) { // $xValues[$Minus - 30] = $Minus - 30; } $Offset = $Offset + rand(5, 20); // Increase offset, and go again } foreach ($this->Artists as $Artist) { $ArtistID = $Artist->ID; if ($Artist->Displayed == true) { continue; } $this->Similar[$ArtistID]['Decimal'] = $this->Similar[$ArtistID]['Decimal'] * (1 / ($this->LargestDecimal)) - 0.1; // Calculate the distance away from the center, based on similarity $IdealDistance = $this->calculate_distance($this->Similar[$ArtistID]['Decimal'], $this->x, $this->y); $this->Similar[$ArtistID]['Distance'] = $IdealDistance; // 1 = left, 2 = right $Horizontal = 0; $Vertical = 0; // See if any similar artists have been placed yet. If so, place artist in that half // (provided that there are enough in the other half to visually balance out) reset($Artist->Similar); foreach ($Artist->Similar as $SimilarArtist) { list($Artist2ID) = array_values($SimilarArtist); if ($this->Artists[$Artist2ID]) { if ($this->Artists[$Artist2ID]->x > (WIDTH / 2) && ($NumRight-$NumLeft) < 1) { $Horizontal = 2; } elseif ($NumLeft - $NumRight < 1) { $Horizontal = 1; } break; } } shuffle($xValues); while ($xValue = array_shift($xValues)) { if (abs($this->x - $xValue) <= $IdealDistance) { if (hypot(abs($this->x - $xValue), ($this->y - 50)) > $IdealDistance || ceil(sqrt(pow($IdealDistance, 2) - pow($this->x - $xValue, 2))) > (HEIGHT / 2)) { $xValue = $this->x - ceil(sqrt(pow($IdealDistance, 2) - pow($IdealDistance * 0.1 * rand(5,9), 2))); //echo "Had to change x value for ".$Artist->Name." to ".$xValue."\n"; } // Found a match (Is close enough to the center to satisfy $IdealDistance), // Now it's time to choose which half to put it on if (!$Horizontal) { // No similar artists displayed $Horizontal = ($NumLeft < $NumRight) ? 1 : 2; } if ($Horizontal == 2) { $xValue = WIDTH - $xValue; $NumRight++; } else { $NumLeft++; } $Artist->x = $xValue; $this->xValues[$xValue] = $ArtistID; unset($xValues[$xValue]); break; } } if (!$xValue) { // Uh-oh, we were unable to choose an x value. $xValue = ceil(sqrt(pow($IdealDistance, 2) / 2)); $xValue = (WIDTH / 2) - $xValue; $Artist->x = $xValue; $this->xValues[$xValue] = $ArtistID; unset($xValues[$xValue]); } // Pythagoras. $yValue is the vertical distance from the center to the y value $yValue = sqrt(pow($IdealDistance, 2) - pow(abs($this->x - $Artist->x), 2)); // Now we pick if it should go on the top or bottom if ($NumTop > $NumBottom) { // Send it to the bottom half $yValue = (HEIGHT / 2) + $yValue; $NumBottom++; } else { $yValue=(HEIGHT / 2) - $yValue; $NumTop++; } $yValue = ceil($yValue); // $yValue is now a proper y coordinate // Now time to do some spacing out if ($yValue < 10) { $yValue += (10 + abs($yValue)) + rand(10,20); } if ($yValue > (HEIGHT - 10)) { $yValue -= ((HEIGHT / 2) - rand(10,20)); } $i = 1; while ($Conflict = $this->scan_array_range($this->yValues, abs($yValue - 13), $yValue + 13)) { if ($i > 10) { break; } if (!$this->scan_array_range($this->yValues, abs($yValue - 5), $yValue - 20)) { $yValue -= 20; } $yValue = $Conflict + rand(10, 20); if ($yValue > HEIGHT - 10) { $yValue -= ceil(HEIGHT / 2.5); } elseif ($yValue < 10) { $yValue += ceil(HEIGHT / 2.5); } $i++; } $Artist->y = $yValue; $this->yValues[$yValue] = $ArtistID; } reset($this->Artists); reset($this->xValues); reset($this->yValues); } // Calculate the ideal distance from the center point ($Rootx, $Rooty) to the artist's point on the board // Pythagoras as fun! function calculate_distance($SimilarityCoefficient, $Rootx, $Rooty) { $MaxWidth = WIDTH - $Rootx; $MaxHeight = HEIGHT - $Rooty; $x = $MaxWidth - ($SimilarityCoefficient * $MaxWidth * 0.01); // Possible x value $y = $MaxHeight - ($SimilarityCoefficient * $MaxHeight); // Possible y value $Hypot = hypot($Rootx - $x, $Rooty - $y); return $MaxWidth - $Hypot; } function similarity($Score, $TotalArtistScore) { return (pow(($Score / ($TotalArtistScore + 1)), (1 / 1))); } function scan_array_range($Array, $Start, $Finish) { if ($Start < 0) { die($Start); } for ($i = $Start; $i <= $Finish; $i++) { if (isset($Array[$i])) { return $i; } } return false; } function write_artists() { ?>
Name)?>
Artists as $Artist) { if ($Artist->ID == $this->ID) { continue; } $xPosition = $Artist->x - $Artist->NameLength * 4; if ($xPosition < 0) { $xPosition = 3; $Artist->x = $xPosition; } $Decimal = $this->Similar[$Artist->ID]['Decimal']; if ($Decimal < 0.2) { $FontSize = 8; } elseif ($Decimal < 0.3) { $FontSize = 9; } elseif ($Decimal < 0.4) { $FontSize = 10; } else { $FontSize = 12; } ?>
Name)?>
Artists); } function background_image() { global $Img; reset($this->Similar); foreach ($this->Similar as $SimilarArtist) { list($ArtistID, $Val) = array_values($SimilarArtist); $Artist = $this->Artists[$ArtistID]; $Decimal = $this->Similar[$ArtistID]['Decimal']; $Width = ceil($Decimal * 4) + 1; $Img->line($this->x, $this->y, $Artist->x, $Artist->y, $Img->color(199, 218, 255), $Width); unset($Artist->Similar[$this->ID]); reset($Artist->Similar); foreach ($Artist->Similar as $SimilarArtist2) { list($Artist2ID) = array_values($SimilarArtist2); if ($this->Artists[$Artist2ID]) { $Artist2 = $this->Artists[$Artist2ID]; $Img->line($Artist->x, $Artist->y, $Artist2->x, $Artist2->y, $Img->color(173, 201, 255)); unset($Artist2->Similar[$ArtistID]); } } reset($this->xValues); } $Img->make_png(SERVER_ROOT.'/static/similar/'.$this->ID.'.png'); } function dump() { echo "Similarities:\n"; foreach ($this->Artists as $Artist) { echo $Artist->ID; echo ' - '; echo $Artist->Name; echo "\n"; echo 'x - ' . $Artist->x . "\n"; echo 'y - ' . $Artist->y . "\n"; print_r($this->Similar[$Artist->ID]); //print_r($Artist->Similar); echo "\n\n---\n\n"; } } } ?>