Функционирующий набросок генератора линейного графика.

К использованию пока не рекомендуется.

Graphs/Linear.php

+<?php
+/**
+
+*
+* ДАННЫЙ КОД ЯВЛЯЕТСЯ НЕДОРАБОТКОЙ, НО МОЖЕТ ФУНКЦИОНИРОВАТЬ. 
+* 	Этот набросок требует доработки. Следует отделить общие функции работы с изображениями и оставить
+* 	только тот функционал, что отвечает за генерацию линейного графика.
+*
+
+**/
+class X_Graphs_Linear
+{
+	private $WIDTH;
+	private $HEIGHT;
+	private $image;
+	private $colors = [];
+
+	private $params = 
+	[ 
+		"polygon" => 
+		[
+			"top" => 10,
+			"left" => 10,
+			"right" => 60,
+			"bottom" => 30
+		]
+	];
+
+	function __construct( $WIDTH, $HEIGHT )
+	{
+		$this->image = imagecreate( $WIDTH, $HEIGHT );
+		$this->WIDTH = $WIDTH;
+		$this->HEIGHT = $HEIGHT;
+
+		$this->set_color( "background", 0, 		0, 		0 );
+		$this->set_color( "line1", 		79, 	79, 	79 );
+		$this->set_color( "line2", 		50, 	50, 	50 );
+		$this->set_color( "line3", 		20, 	20, 	20 );
+		$this->set_color( 1, 			255, 	0, 		0 );
+		$this->set_color( 2, 			0, 		255, 	0 );
+		$this->set_color( 3, 			0, 		0, 		255 );
+		$this->set_color( 4, 			100, 	100, 	100 );
+		$this->set_color( 5, 			200, 	200, 	200 );
+		$this->set_color( 6, 			255, 	255, 	255 );
+
+		$this->set_line_width(1);
+		$this->set_background();
+
+		$this->draw_polygon();
+	}
+
+
+
+
+	public function drawData($xLine, $data)
+	{
+		$p_WIDTH  = $this->params["polygon"]["WIDTH"];
+		$p_HEIGHT = $this->params["polygon"]["HEIGHT"];
+		$X1 = $this->params["polygon"]["X1"];
+		$Y1 = $this->params["polygon"]["Y1"];
+		$X2 = $this->params["polygon"]["X2"];
+		$Y2 = $this->params["polygon"]["Y2"];
+		list( $min_value, $max_value ) = $this->get_min_max_from_data($data);
+
+		$x_count = count($xLine)-1;
+		$x_data_names = [];
+		$IDX = 0;
+		foreach ($xLine as $key => $value) 
+		{
+			$X = (( $p_WIDTH * ($IDX) / $x_count ) + $X1);
+			$x_data_names[$key] = $X;
+			imagestring ( $this->image, 1, $X, $Y2 + 2, $value, $this->colors[5] );
+			$IDX++;
+		}
+
+		$tmv = $max_value - $min_value;
+		for ($C=($Y1-7); $C < ($Y2-7); $C+=21) 
+		{ 
+			$cur = round( $tmv - ( $tmv * ($C-($Y1-7)) / (($Y2-7) - ($Y1-7)) ) +  $min_value, 0 ) ;
+			imageline   ( $this->image, $X2+1, $C+7, $X2 + 2, $C+7, $this->colors[5] ); 
+			imagestring ( $this->image, 1, $X2 + 4, $C, $cur, $this->colors[5] );
+		}
+
+		$color_id = 1;
+		$text_pos_x = $X1;
+		$text_pos_y = $Y2 + 10;
+		foreach ($data as $value_mas) 
+		{
+			$pin_x = $pin_y = false;
+			if(!isset($this->colors[$color_id])) $color_id = 1;
+			$color = $this->colors[$color_id]; 
+			$color_id++;
+
+			if( isset($value_mas[1] ))
+			{
+				$t_size = strlen($value_mas[1])*5;
+				if(($t_size + $text_pos_x) > $p_WIDTH) { $text_pos_y += 10; $text_pos_x = $X1; }
+				imagestring ( $this->image, 1, $text_pos_x, $text_pos_y, $value_mas[1], $color );
+				$text_pos_x = $t_size + $text_pos_x + 10;
+			}
+			foreach ($value_mas[0] as $key => $value) 
+			{
+				//$tx = (				( $p_WIDTH  * ($key)                / $x_count 	) + $X1);
+				$tx = $x_data_names[$key];
+				$ty = ( $p_HEIGHT -	( $p_HEIGHT * ($value-$min_value)   / $tmv 		) + $Y1);
+				if($pin_x  === false && $pin_y === false)
+				{
+					$pin_x = $tx;
+					$pin_y = $ty;
+				}
+				else
+				{
+					imageline ( $this->image, $pin_x, $pin_y, $tx, $ty, $color ); 
+					$pin_x = $tx;
+					$pin_y = $ty;
+				}
+			}
+		}
+	}
+
+	private function get_min_max_from_data($data)
+	{
+		$min = false;
+		$max = 0;
+		foreach ($data as $value_mas) 
+		{
+			foreach ($value_mas[0] as $value) 
+			{
+				if($value > $max) $max = $value;
+				if($value < $min || $min === false ) $min = $value;
+			}
+		}
+		$max += round( $max * 0.1 );
+		$min -= round( $min * 0.1 );
+
+		return [ ( ($min<0)?0:$min ), $max ];
+	}
+
+	public function draw_polygon()
+	{
+		$this->params["polygon"]["WIDTH"]  = $this->WIDTH  - ( $this->params["polygon"]["left"] + $this->params["polygon"]["right"] );
+		$this->params["polygon"]["HEIGHT"] = $this->HEIGHT - ( $this->params["polygon"]["top"] + $this->params["polygon"]["bottom"] );
+		$this->params["polygon"]["X1"] = $X1 = $this->params["polygon"]["left"];
+		$this->params["polygon"]["Y1"] = $Y1 = $this->params["polygon"]["top"];
+		$this->params["polygon"]["X2"] = $X2 = $this->WIDTH  - $this->params["polygon"]["right"];
+		$this->params["polygon"]["Y2"] = $Y2 = $this->HEIGHT - $this->params["polygon"]["bottom"];
+		$this->draw_grid();
+		imagerectangle( $this->image, $X1, $Y1, $X2, $Y2 , $this->colors['line1'] );
+	}
+
+	private function draw_grid()
+	{
+		$X1 = $this->params["polygon"]["X1"];
+		$Y1 = $this->params["polygon"]["Y1"];
+		$X2 = $this->params["polygon"]["X2"];
+		$Y2 = $this->params["polygon"]["Y2"];
+
+		for ($X = $X2; $X >= $X1; $X -= 15) 
+		{ 
+			imagesetstyle ($this->image, [ $this->colors['line3'], $this->colors['background'] ]);
+			imageline ($this->image, $X, $Y1, $X, $Y2, IMG_COLOR_STYLED); 
+		}
+		for ($Y = $Y2; $Y >= $Y1; $Y -= 15) 
+		{ 
+			imagesetstyle ($this->image, [ $this->colors['line3'], $this->colors['background'] ]);
+			imageline ($this->image, $X1, $Y, $X2, $Y, IMG_COLOR_STYLED); 
+		}
+
+		for ($X = $X2; $X >= $X1; $X -= 60) 
+		{ 
+			imagesetstyle ($this->image, [ $this->colors['line2'], $this->colors['background'] ]);
+			imageline ($this->image, $X, $Y1, $X, $Y2, IMG_COLOR_STYLED); 
+		}
+		for ($Y = $Y2; $Y >= $Y1; $Y -= 60) 
+		{ 
+			imagesetstyle ($this->image, [ $this->colors['line2'], $this->colors['background'] ]);
+			imageline ($this->image, $X1, $Y, $X2, $Y, IMG_COLOR_STYLED); 
+		}
+	}
+
+	// not use
+	private function draw_line()
+	{
+		imagesetstyle ($this->image, [ $this->colors['line2'], $this->colors['background'] ]);
+		imageline ($this->image, $X, $Y1, $X, $Y2, IMG_COLOR_STYLED); 
+
+	}
+
+
+	public function draw_legend()
+	{
+		
+	}
+
+
+
+
+
+
+
+	public function set_color( $name, $R, $G, $B )
+	{
+		$this->colors[$name] = imageColorAllocate( $this->image, $R, $G, $B );
+	}
+	public function set_line_width( $width )
+	{
+		imagesetthickness($this->image, $width);
+	}
+
+	public function set_background($R=0,$G=0,$B=0)
+	{
+		if( $R == 0 && $G == 0 && $B == 0 ) $color = $this->colors['background'];
+		else $this->colors['background'] = $color = imageColorAllocate( $this->image, $R, $G, $B );
+		imageFilledRectangle($this->image, 0, 0, imageSX($this->image), imageSY($this->image), $color);
+	}
+
+	public function Display()
+	{
+		header("Content-Type: image/png");
+		imagepng($this->image);
+		imagedestroy($this->image);
+
+		
+		exit;
+	}
+}
+?>
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