How to Implement text rendering of cocos2d-x

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/1. Create a piece of text
// The three parameters of the create FUNCTION are text content, Font, and font size.
CCLabelTTF * font = CCLabelTTF: create ("Hello World", "48", 48 );
 
// 2. Obtain the text size
// Font-> getContentSize () returns a CCSize value.
// This value has two attributes: width and height, representing the width and height of the text content, respectively.
CCSize fontSize = font-> getContentSize ();
 
// 3. Construct a color
// CcColor3B has three attributes to be set: r, g, and B, which represent the RGB values of the color.
// For example, if r, g, and B are respectively 255, 255, or 255, the color is white.
// The value range of r, g, and B should be [0,255]
// Construct a red string below
CcColor3B color;
Color. r = 255;
Color. g = 0;
Color. B = 0;
 
// 4. Set the font color
// The setColor method of font sets a color for font. The parameter type is ccColor3B.
// Set the color of the previous build to font
Font-> setColor (color );
 
// 5. Set the text transparency
// Set the value of setOpacity to [0,100].
// When the parameter is 0, it indicates completely transparent, that is, invisible
// When the parameter is 100, it indicates that it is not transparent
// The greater the parameter, the clearer it is.
Font-> setOpacity (50 );
 
// 6. Set the text direction
// Font's setFlipX method sets whether the text is flipped horizontally to 180 degrees
// The parameter is boolean. When the parameter is true, the text direction is from right to left.
// Font setFlipY sets whether the text is flipped up vertically to 180 degrees.
// The parameters are also Boolean. If the parameters are true, the text is displayed upside down.
Font-> setFlipX (1 );
Font-> setFlipY (1 );
 
// 7. Obtain the form size
// CCDirector: sharedDirector ()-> getWinSize () can get a CCSize value.
// Its two attributes are the width, width, and height of the form, respectively.
// These two attributes are obtained to facilitate setting the location of text or other controls in the future
CCSize size = CCDirector: shareddire()-> getWinSize ();
 
// 8. Set the text position
// CCPointMake is the definition of CPoint
// Set the font's setPosition Method to the point corresponding to the parameter
// The x and y coordinates of the parameter points correspond to the x and y coordinates of the center position of the rectangle occupied by the text content respectively.
// That is, the parameter point is the center point of the text content
// Place the font in the center of the form below
Font-> setPosition (CCPointMake (size. width/2, size. height/2 ));