[]graphics透明度设置详细步骤

//画一个半透明屎黄色区域

this.graphics.save();

this.graphics.alpha(0.5);

this.graphics.drawRect(-40, -110, 80, 110, "#ffcc00");

this.graphics.restore();

//再画一个红色小半透明区域

this.graphics.save();

this.graphics.alpha(0.7);

this.graphics.drawRect(40, -110, 80, 110, "#ff0000");

this.graphics.restore();