Algorithms: misc

Horizontal to Vertical Array

 /*
	 ( result: ) --> to -->    ( result: )
	  0, 1 , 2,                 0, 4, 8, 
	  3, 4 , 5,                 1, 5, 9, 
	  6, 7 , 8,                 2, 6, 10, 
	  9, 10, 11,                3, 7, 11, 
*/


int    $colSize = 3;
int    $rowSize = 4;
string $value[] =   { "0" , "1" , "2",
                      "3" , "4" , "5",
                      "6" , "7" , "8",
                      "9" , "10", "11" };


// Convert horizontal array to vertical array
//
int    $count=0;
string $newValue[]; clear($newValue);

for ($i=0; $i<$colSize; $i++) {               // for each column
	for ($ii=0; $ii<$rowSize; $ii++) {         // for each row

		$columnTop        = ($ii * $colSize);   // (row * numCol)                   = the top of each column
		$index            = ($columnTop + $i);  // (top of column) + currentColumn  = column, then down
		$newValue[$index] = $value[$count];     
		print ( $index +"--"+ $count +"\n");

		$count++;
	}
}


// print newGraph
//
int $count = 0;                           // ( result: )
for ($i=0; $i<size($newValue); $i++) {    //  0, 4, 8, 
	if ($count < $colSize) {               //  1, 5, 9, 
		print ($newValue[$i] + ", ");	      //  2, 6, 10, 
		$count++;                           //  3, 7, 11, 
	} else {
		print "\n";
		print ($newValue[$i] +", ");
		$count = 1;
	}
}

scale video within bounding box

self.width  = 100   ##  the height/width of the bounding
self.height = 150   #    box that the video is contained in.

avg_width   = 80    ##  the height/width of the video we want
avg_height  = 120   #   to occupy the maximum amount of space within the bounding-box



logger.debug('calculating height scaled based on width')
width_scaled_height = ( self.width * avg_width ) / avg_height

logger.debug('calculating width scaled based on height')
height_scaled_width = ( self.height * avg_height ) / avg_width



if self.width > self.height:
	logger.debug('bounding box is wider than tall')
	if width_scaled_height <= self.height:
		logger.debug('width_scaled_height >= self.height')
		self.video_width  = self.width
		self.video_height = width_scaled_height
	else:						
		logger.debug('width_scaled_height <  self.height')
		self.video_height = self.height
		self.video_width  = height_scaled_width

else:
	logger.debug('bounding box is taller than wide')
	if height_scaled_width <= self.width:
		logger.debug('height_scaled_width >= self.width')
		self.video_height  = self.height
		self.video_width   = height_scaled_width
	else:						
		logger.debug('height_scaled_width <  self.width')
		self.video_width  = self.width
		self.video_height = width_scaled_height