pchart画直线的分析(drawLine)

zhgc

pchart画直线的分析的
从pDraw.class.php截取

1.    /* Draw a line between two points */
   
2.    function drawLine($X1,$Y1,$X2,$Y2,$Format="")
   
3.     {
   
4.      $R                = isset($Format["R"]) ? $Format["R"] : 0;
   
5.      $G                = isset($Format["G"]) ? $Format["G"] : 0;
   
6.      $B                = isset($Format["B"]) ? $Format["B"] : 0;
   
7.      $Alpha        = isset($Format["Alpha"]) ? $Format["Alpha"] : 100;
   
8.      $Ticks        = isset($Format["Ticks"]) ? $Format["Ticks"] : NULL;
   
9.      $Cpt        = isset($Format["Cpt"]) ? $Format["Cpt"] : 1;
   
10.      $Mode        = isset($Format["Mode"]) ? $Format["Mode"] : 1;
    
11.      $Weight        = isset($Format["Weight"]) ? $Format["Weight"] : NULL;
    
12.      $Threshold        = isset($Format["Threshold"]) ? $Format["Threshold"] : NULL;

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画线，不需要其他功能部件：

1. <?php
   
2. /* Include all the classes */  
   
3. include("../../pChart2.1.4/class/pDraw.class.php");  
   
4. include("../../pChart2.1.4/class/pImage.class.php");  
   
5. include("../../pChart2.1.4/class/pData.class.php");
   
6. 
   
7. /* Create your dataset object */  
   
8. $myData = new pData();  
   
9. 
   
10. /* Create a pChart object and associate your dataset */  
    
11. $myPicture = new pImage(1000,500,$myData,true);
    
12. 
    
13. $myPicture->drawLine(370,160,650,160,array("R"=>255,"G"=>255,"B"=>255,"Ticks"=>4,"Weight"=>3));
    
14. 
    
15. /* Render the picture (choose the best way) */
    
16. $myPicture->autoOutput("example.basic.png");
    
17. ?>
    

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zhgc

example.drawLine.php

1. <?php   
   
2. /* CAT:Drawing */
   
3. 
   
4. /* pChart library inclusions */
   
5. include("../class/pDraw.class.php");
   
6. include("../class/pImage.class.php");
   
7. 
   
8. /* Create the pChart object */
   
9. $myPicture = new pImage(700,230);
   
10. 
    
11. /* Draw the background */
    
12. $Settings = array("R"=>170, "G"=>183, "B"=>87, "Dash"=>1, "DashR"=>190, "DashG"=>203, "DashB"=>107);
    
13. $myPicture->drawFilledRectangle(0,0,700,230,$Settings);
    
14. 
    
15. /* Overlay with a gradient */
    
16. $Settings = array("StartR"=>219, "StartG"=>231, "StartB"=>139, "EndR"=>1, "EndG"=>138, "EndB"=>68, "Alpha"=>50);
    
17. $myPicture->drawGradientArea(0,0,700,230,DIRECTION_VERTICAL,$Settings);
    
18. $myPicture->drawGradientArea(0,0,700,20,DIRECTION_VERTICAL,array("StartR"=>0,"StartG"=>0,"StartB"=>0,"EndR"=>50,"EndG"=>50,"EndB"=>50,"Alpha"=>80));
    
19. 
    
20. /* Draw the picture border */  
    
21. $myPicture->drawRectangle(0,0,699,229,array("R"=>0,"G"=>0,"B"=>0));
    
22.   
    
23. /* Write the picture title */  
    
24. $myPicture->setFontProperties(array("FontName"=>"../fonts/Silkscreen.ttf","FontSize"=>6));
    
25. $myPicture->drawText(10,13,"drawLine() - Basis",array("R"=>255,"G"=>255,"B"=>255));
    
26. 
    
27. /* Turn on shadow computing */  
    
28. $myPicture->setShadow(TRUE,array("X"=>1,"Y"=>1,"R"=>0,"G"=>0,"B"=>0,"Alpha"=>20));
    
29. 
    
30. /* Draw some lines */  
    
31. for($i=1;$i<=100;$i=$i+4)
    
32.   $myPicture->drawLine($i+5,215,$i*7+5,30,array("R"=>rand(0,255),"G"=>rand(0,255),"B"=>rand(0,255),"Ticks"=>rand(0,4)));
    
33. 
    
34. /* Draw an horizontal dashed line with extra weight */
    
35. $myPicture->drawLine(370,160,650,160,array("R"=>0,"G"=>0,"B"=>0,"Ticks"=>4,"Weight"=>3));
    
36. 
    
37. /* Another example of extra weight */
    
38. $myPicture->drawLine(370,180,650,200,array("R"=>255,"G"=>255,"B"=>255,"Ticks"=>15,"Weight"=>1));
    
39. 
    
40. /* Render the picture (choose the best way) */
    
41. $myPicture->autoOutput("pictures/example.drawLine.png");
    
42. ?>

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