带处理的连续图像 [英] Sequential images with processing
问题描述
我正在尝试按顺序制作我的图像，但每次我这样做都会给我这个错误：" NullPointerException" on images（image [imageIndex]，
0,0）;并且图像位于数据文件夹中....请帮助我
Hi , i am trying to make my images mive sequentially but everytime i do that it gives me this error :"NullPointerException" on images(image[imageIndex], 0, 0); and the images are located in the datafolder .... Please help me
int maxImages = 10; //图像总数
int imageIndex = 0; //要显示的初始图像是第一个...
//声明一组图像。
PImage [] images = new PImage [ maxImages];
无效设置（）{
尺寸（1024,768）;
//将图像加载到阵列中
//不要忘记将JPG文件放在数据文件夹中！
for（int i = 0; i< images.length; i ++）{
&NBSP; images [i] = loadImage（" book" + i +" .jpg"）;
&NBSP; // images [i] = loadImage（" 1319735616_misery03" + i +" .jpg"）;
}¥b $ b frameRate（5）;
}
void draw（）{
背景（0）;
image（images [imageIndex]，0,0）;
//每个周期增加一个图像索引
//使用模数" ％"一旦到达阵列结束时返回0
imageIndex =（imageIndex + 1）％images.length;
}
int maxImages = 10; // Total # of images
int imageIndex = 0; // Initial image to be displayed is the first
// Declaring an array of images.
PImage[] images = new PImage[maxImages];
void setup() {
size(1024,768);
// Loading the images into the array
// Don't forget to put the JPG files in the data folder!
for (int i = 0; i < images.length; i ++ ) {
images[i] = loadImage( "book" + i + ".jpg" );
//images[i] = loadImage( "1319735616_misery03" + i + ".jpg" );
}
frameRate(5);
}
void draw() {
background(0);
image(images[imageIndex],0,0);
// increment image index by one each cycle
// use modulo " % "to return to 0 once the end of the array is reached
imageIndex = (imageIndex + 1) % images.length;
}
推荐答案
你可以检查imageindex中的值或变量imageindex本身是否在draw（）方法中正确定义了吗？
Can you check if the value in imageindex OR the variable imageindex itself is defined correctly in the draw() method?
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