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PHP | ImagickDraw setFillAlpha() Function

Last Updated : 30 Dec, 2019
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The ImagickDraw::setFillAlpha() function is an inbuilt function in PHP which is used to set the opacity to use when drawing using the fill color or fill texture.

Syntax:

bool ImagickDraw::setFillAlpha( float $opacity )

Parameters: This function accepts a single parameter $opacity which holds the opacity of the color where 1 means opaque and 0 means transparent.

Return Value: This function returns TRUE on success.

Exceptions: This function throws ImagickException on error.

Below given programs illustrate the ImagickDraw::setFillAlpha() function in PHP:

Program 1:




<?php
  
// Create a new imagick object
$imagick = new Imagick();
  
// Create a image on imagick object
$imagick->newImage(800, 250, 'white');
  
// Create a new imagickDraw object
$draw = new ImagickDraw();
  
// Set the color to green
$draw->setFillColor('green');
  
// Set the opacity
$draw->setFillAlpha(0.3);
  
// Set the font size
$draw->setFontSize(80);
  
// Annotate a text
$draw->annotation(100, 150, 'GeeksforGeeks');
  
// Render the draw commands
$imagick->drawImage($draw);
  
// Show the output
$imagick->setImageFormat('png');
header("Content-Type: image/png");
echo $imagick->getImageBlob();
?> 






                        










Output:




Program 2:













                                    




                                    

                                    




                                    




                                    

                                    

                                    
                                




















<?php 


  


// Create a new imagick object 


$imagick = new Imagick(); 


  


// Create a image on imagick object 


$imagick->newImage(800, 250, 'white'); 


  


// Create a new imagickDraw object 


$draw = new ImagickDraw(); 


  


// Set the color to green 


$draw->setFillColor('green'); 


  


// Set the opacity 


$draw->setFillAlpha(0.3); 


  


// Draw a circle 


$draw->circle(300, 200, 230, 20); 


  


// Set the color to red 


$draw->setFillColor('red'); 


  


// Set the opacity 


$draw->setFillAlpha(0.5); 


  


// Draw a rectangle 


$draw->rectangle(200, 300, 20, 100); 


  


// Render the draw commands 


$imagick->drawImage($draw); 


  


// Show the output 


$imagick->setImageFormat('png'); 


header("Content-Type: image/png"); 


echo $imagick->getImageBlob(); 


?> 



















                        







                        










Output:




Reference: https://www.php.net/manual/en/imagickdraw.setfillalpha.php




                            
                            
                        


                                                                              

                                        

                                                                                

                                                                

                            
                                

                                
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                                        PHP | ImagickDraw setFillOpacity() Function
                                    

                                

                                                        

                        

                            

                                        

                                            

                                                

                                                

                                                    
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