Java 图像误差；找不到drawImage的方法

看起来错误出现在第行：

g2V2.drawImage（canvas2.getImage（），scaleTransform，null）-在
java.awt.Graphics
界面中没有这样的方法

您应该将方法与另一个签名一起使用：
drawImage（图像img，int x，int y，ImageObserver）
-请参见错误似乎在第行：

g2V2.drawImage（canvas2.getImage（），scaleTransform，null）-在
java.awt.Graphics
界面中没有这样的方法

您应该将方法与另一个签名一起使用：
drawImage（图像img、int x、int y、ImageObserver观察者）
-请参见
错误是什么？错误在scalePicture方法中的drawImage中。上面说找不到适合drawImage的方法错误是什么？错误在scalePicture方法中的drawImage中。上面说没有找到适合DrawImages的方法我意识到这是错误的，但我需要将图像缩小到原始图像的0.75 x 0.75。我只是复制了一个演示的内容，演示没有错误，除了我的错误。因此，我想知道是否有任何方法可以缩小我的图像。在这里查看有关缩放的更多信息：我正在查看您在回答中发送的链接，我看到有一个缩放选项，但它仅用于int，是否可以将其转换为双精度？我意识到这是错误，但我需要将图像缩小到原始图像的0.75 x 0.75。我只是复制了一个演示的内容，演示没有错误，除了我的错误。因此，我想知道是否有任何方法可以缩小我的图像。在这里查看有关缩放的更多信息：我正在查看您在回答中发送的链接，我看到有一个缩放选项，但它仅用于int，是否可以将其转换为double？
/**
 * The purpose of this program is to make an image and turn it into a kaleidoscope
 *
 * @author (Danny Meijo)
 * @version (07/27/2017)
 */
import java.awt.*;
import java.awt.geom.AffineTransform;
import java.awt.geom.Ellipse2D;

public class KaleidoscopeImage
{
    private Picture canvas = null;
    private Picture canvas2 = null;
    private Picture pictureObj = null;
    private Picture scaledPicture = null;
    private Picture clippedPicture = null;
    private Graphics g = null;
    private Graphics g2 = null;
    private Graphics gV2 = null;
    private Graphics g2V2 = null;
    private Graphics gV3 = null;
    private Graphics g2V3 = null;


    KaleidoscopeImage(Picture Canvas, Picture image, Picture Canvas2)
    {
        canvas = Canvas;
        canvas2 = Canvas2;
        pictureObj = image;
        g = canvas.getGraphics();
        g2 = (Graphics2D)g;
    }
    public Picture firstPanel()
    {
        g2.drawImage(pictureObj.getImage(), 0, canvas.getHeight() / 2, null);


        Pixel bottomLeftPixel = null;
        Pixel topRightPixel = null;
        Color sourceColor1 = null;


        for(int ty = 0, by = canvas.getHeight(); ty < canvas.getHeight() / 2; ty++, by--)
        {
            for(int lx = 0, rx = canvas.getWidth(); lx < canvas.getWidth() / 2; lx++, rx--)
            {
                bottomLeftPixel = canvas.getPixel(lx, by - 1);
                sourceColor1 = bottomLeftPixel.getColor();
                topRightPixel = canvas.getPixel(rx - 1, ty);
                topRightPixel.setColor(sourceColor1);
            }
        }


        Pixel sourcePixel = null;
        Pixel targetPixel = null;
        Color sourceColor2 = null;
        Color targetColor = null;


        for(int y = 0; y < canvas.getHeight() / 2; y++)
        {
            for(int lx = 0, rx = canvas.getWidth(); lx < canvas.getWidth() / 2; lx++, rx--)
            {
                sourcePixel = canvas.getPixel(rx - 1,y);
                sourceColor2 = sourcePixel.getColor();
                targetPixel = canvas2.getPixel(lx,y);
                targetPixel.setColor(sourceColor2);
            }
        }

        return canvas2;

    }
    public Picture secondPanel()
    {
        Pixel leftPixel = null;
        Pixel rightPixel = null;
        Color sourceColor = null;


        for(int y = 0; y < canvas2.getHeight() / 2; y++)
        {
            for(int lx = 0, rx = canvas2.getWidth(); lx < canvas2.getWidth() / 2; lx++, rx--)
            {
                leftPixel = canvas2.getPixel(lx,y);
                sourceColor = leftPixel.getColor();
                rightPixel = canvas2.getPixel(rx - 1, y);
                rightPixel.setColor(sourceColor);
            }
        }

        return canvas2;

    }

    public Picture thirdPanel()
    {
        Pixel topPixel = null;
        Pixel bottomPixel = null;
        Color sourceColor = null;

        for(int lx = 0, rx = canvas2.getWidth(); lx < canvas2.getWidth() / 2; lx++, rx--)
        {
            for(int ty = 0, by = canvas2.getHeight(); ty < canvas2.getHeight() / 2; ty++, by--)
            {
                topPixel = canvas2.getPixel(rx - 1, ty);
                sourceColor = topPixel.getColor();
                bottomPixel = canvas2.getPixel(rx - 1, by - 1);
                bottomPixel.setColor(sourceColor);
            }
        }

        return canvas2;

    }


    public Picture fourthPanel()
    {
        Pixel leftPixel = null;
        Pixel rightPixel = null;
        Color sourceColor = null;


        for(int lx = 0, rx = canvas2.getWidth(); lx < canvas2.getWidth() / 2; lx++, rx--)
        {
            for(int ty = 0, by = canvas2.getHeight(); ty < canvas2.getHeight() / 2; ty++, by--)
            {
                leftPixel = canvas2.getPixel(rx - 1, by - 1);
                sourceColor = leftPixel.getColor();
                rightPixel = canvas2.getPixel(lx, by - 1);
                rightPixel.setColor(sourceColor);
            }
        }

        return canvas2;

    }
    public Picture scalePicture(double xFactor, double yFactor)
    {
        AffineTransform scaleTransform = new AffineTransform();
        scaleTransform.scale(xFactor, yFactor);
        scaledPicture = new Picture((int)(canvas2.getWidth() * xFactor), (int)(canvas2.getHeight() * yFactor));
        gV2 = scaledPicture.getGraphics();
        g2V2 = (Graphics2D)gV2;
        g2V2.drawImage(canvas2.getImage(), scaleTransform, null);

        return scaledPicture;

    }


    public Picture clipPicture(Color color)
    {
        Picture canvas3 = new Picture(canvas2.getWidth(), canvas2.getHeight());

        Pixel sourcePixel = null;
        Pixel targetPixel = null;
        Color sourceColor = null;
        Color targetColor = null;

        for(int y = 0; y < canvas2.getHeight(); y++)
        {
            for(int x = 0; x < canvas.getWidth(); x++)
            {
                sourcePixel = canvas2.getPixel(x,y);
                sourceColor = sourcePixel.getColor();
                targetPixel = canvas3.getPixel(x,y);
                targetPixel.setColor(sourceColor);
            }
        }

        gV3 = canvas3.getGraphics();
        g2V3 = (Graphics2D)gV3;


        canvas3.setAllPixelsToAColor(color);
        Ellipse2D.Double clip = new Ellipse2D.Double(0,0, canvas3.getHeight(), canvas3.getWidth());
        g2V3.setClip(clip);
        g2V3.drawImage(canvas2.getImage(), 0, 0, canvas3.getHeight(), canvas3.getWidth(), null);

        return canvas3;

    }
}