反应本地作物图像 [英] React native crop image

问题描述

我在裁剪本机图像时遇到一些问题.如您所见，下面的示例在此处输入图片描述

I have a little problem with cropping images in react native. As you can see the example below enter image description here

我想在白色矩形内裁剪图像，不知道是否使用了错误的公式

I want to crop the image inside the white rectangle, I don't know if I'm using the wrong formula or not

  takePicture = async() => {
    console.log("pic")
    if (this.camera != null) {
      const data = await this.camera.takePictureAsync();

      /**
       * Calcul
       */
      const x_axis_scale = data.width / width
      const y_axis_scale = data.height / height
      var x_coord_int = 70 * x_axis_scale;
      var y_coord_int = 120 * y_axis_scale;
      var rect_width_int = 200 * x_axis_scale;
      var rect_height_int = 70 * y_axis_scale
      const res = await ImageEditor.cropImage(data.uri, {
        offset: {x: x_coord_int, y: y_coord_int},
        size: {
          width:rect_width_int,
          height: rect_height_int
        }
      })
      this.setState({
        imageCrop: res
      })
    }
  };

无法正确裁剪.有帮助吗?

It doesn'tt crop correcty. Any help?

推荐答案

对不起，我不能解决这个问题.但是有一个库 react-native-image-crop-picker 这可以帮助解决裁剪问题.希望这会有所帮助.

Sorry , i can't help about this issue . But there is a library react-native-image-crop-picker which can help with cropping issue . Hope this helps.

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