| dleft | Specifies the left edge of the destination rectangle in pixels (at the image location of the destination layer). |
| dtop | Specifies the top edge of the destination rectangle in pixels (at the image location of the destination layer). |
| dwidth | Specifies the width of the destination rectangle in pixels (at the image location of the destination layer). |
| dheight | Specifies the height of the destination rectangle in pixels (at the image location of the destination layer). |
| src | Specify the copy source layer object. Bitmap class objects can also be specified. (1.1.0 or later) |
| sleft | Specifies the left edge of the rectangle to be copied in pixels (at the image position of the source layer). |
| stop | Specifies the top edge of the rectangle to be copied in pixels (at the image position of the source layer). |
| swidth | Specifies the width of the rectangle to be copied in pixels (at the image position of the source layer). |
| sheight | Specifies the height of the rectangle to be copied in pixels (at the image position of the source layer). |
| type | Specifies the type of scaling. stNearest : Nearest neighbor method is used stFastLinear : Low-precision linear interpolation is used (partially implemented) stSemiFastLinear : Fixed decimal linear interpolation is used (since 1.3) stLinear : Linear interpolation is used (implementation change since 1.3) stFastCubic : Fixed decimal 3D interpolation is used (since 1.3) stCubic : Three-dimensional interpolation is used (implementation change since 1.3) stFastLanczos2 : Fixed decimal area Lanczos interpolation range 4x4 is used (since 1.3) stLanczos2 : Lanczos interpolation range 4x4 is used (since 1.3) stFastLanczos3 : Fixed decimal area Lanczos interpolation range 6x6 is used (since 1.3) stLanczos3 : Lanczos interpolation range 6x6 is used (since 1.3) stFastSpline16 : Fixed decimal spline interpolation 4x4 is used (since 1.3) stSpline16 : 4x4 spline interpolation is used (since 1.3) stFastSpline36 : Fixed decimal spline interpolation 6x6 is used (since 1.3) stSpline36 : 6x6 spline interpolation is used (since 1.3) stFastAreaAvg : Fixed decimal area average reduction is used. Cannot be expanded (since 1.3) stAreaAvg : Area average reduction is used. Cannot be expanded (since 1.3) stFastGaussian : Fixed decimal Gaussian interpolation 4x4 is used (since 1.3) stGaussian : Gaussian interpolation 4x4 is used (since 1.3) stFastBlackmanSinc : Fixed-point Blackman-Sinc interpolation 8x8 is used (since 1.3) stBlackmanSinc : Blackman-Sinc interpolation 8x8 is used (1.3 or later) The speed is higher in the order of stNearest> stFastLinear> stLinear> stCubic, but the higher the speed, the lower the quality. The interpolation method after stCubic is sufficiently high quality and it can be said that it is a difference of preference. However, Gaussian interpolation results in blurry image quality. The difference between stFastLinear and other linear interpolations (stSemiFastLinear and stLinear) is significant when reducing. stFastLinear always refers to the surrounding four pixels, whereas stSemiFastLinear and stLinear refer to and interpolate a range in which the affected area at equal magnification is 4 pixels when reducing, that is, a wider range of pixels. Higher image quality (algorithm is the original linear interpolation algorithmically). For stFastLinear, stRefNoClip can be additionally specified by bitwise OR, and in this case, it is permitted to refer to outside the area of the bitmap to be copied and synthesize the color. If this is not specified, there will be no reference outside the range of the source bitmap, even if there is room around the source bitmap. Is considered a color). |
| option | Added since 1.3. Sharpness for 3D interpolation. Other interpolation methods currently have no meaning. Increasing the sharpness value in the positive direction blurs the image, and increasing the value in the negative direction increases the sharpness. |