// Get the sacaling values based on the textures width and height
scaling getscalingFromTexture(int mtW, int mtH)
{
scaling sc = new scaling(FrameObj.transform.localScale);
float s = 1; //scale to scale the sprite object by
sc.origSize = new Vector2(mtW, mtH);
// If height AND width are less than the max values, then ONLY rescale
// the frame
if (mtH < maxHeight && mtW < maxWidth)
{
sc.frameScale.x = (mtW / maxWidth) * sc.frameScale.x;
sc.frameScale.y = (mtH / maxHeight) * sc.frameScale.y;
sc.onlyFrameIsScaled = true;
return(sc);
}
// If width is greater than max width, Rescale image based of width fraction
if (mtW > maxWidth)
{
s = maxWidth / mtW;
// Perform scaling for the frame bounding inverse to the image sprite scaling
sc.frameScale.x = (1 / s) * sc.frameScale.x;
sc.frameScale.y = (mtH / maxHeight) * sc.frameScale.y;
sc.widthCorrected = true;
}
// If, after the previous transform (or if no transform was made),
// the height is still greater than max height, then rescale image
// according to the height ratio btw image height and max height
if (mtH * s > maxHeight)
{
s = maxHeight / (mtH);
sc.heightCorrected = true;
}
sc.scale = s;
return(sc);
}
// This function is the setup function that opens the image and loads the sprite with it
public scaling initiateSprite(Sprite sprite, int tw, int th)
{
//Adjust for variation in initial max width and heitght w.r.t 420 reference
rt = GetComponent <RectTransform>();
rt.localScale = new Vector3(maxWidth / 420, maxHeight / 420, transform.localScale.z);
int i = 0;
GetComponent <Image>().sprite = sprite; // Attach the sprite to the image UI
// Obtain the scaling needed from the texture
scaling sc = getscalingFromTexture(tw, th);
// Scale the image frame
foreach (maintainFrameSize mfsScript in FindObjectsOfType <maintainFrameSize>())
{
mfsScript.setSize();
}
transform.localScale = sc.scale;
foreach (maintainFrameSize mfsScript in FindObjectsOfType <maintainFrameSize>())
{
mfsScript.restoreSize();
}
return(sc);
//return new scaling(rt.localScale);
}
// This function is the setup function that opens the image and loads the sprite with it
public scaling initiateSprite(Sprite sprite, int tw, int th)
{
//Adjust for variation in max width and heithg
FrameObj.transform.localScale = new Vector3(maxWidth / 420, maxHeight / 420, FrameObj.transform.localScale.z);
scaling sc = getscalingFromTexture(tw, th);
SpriteObj.GetComponent <SpriteRenderer>().sprite = sprite; // Set the sprite object of the sprite renderer
SpriteObj.transform.localScale = new Vector3(sc.scale, sc.scale, 1); // Rescale the sprite to fit max size
FrameObj.transform.localScale = sc.frameScale; // Adjust the bounding frame of the image sprite
RectTransform rt = SpriteObj.GetComponent <RectTransform>();
rt.sizeDelta = new Vector2(4.2f / (sc.frameScale.x * sc.scale), 4.2f / (sc.frameScale.y * sc.scale));
return(sc);
}
// Get the sacaling values based on the textures width and height
scaling getscalingFromTexture(int mtW, int mtH)
{
// The texture will be mapped to an area that is
// x: maxWidth units
// y: maxHeight units
scaling sc = new scaling(rt.localScale); // Initialize a new scaling object using the current scaling
float s = 1; //scale to scale the sprite object by
sc.origSize = new Vector2(mtW, mtH);
// If height AND width are less than the max values, then ONLY rescale the frame
if (mtH < maxHeight && mtW < maxWidth)
{
sc.scale.x = (mtW / maxWidth) * sc.scale.x;
sc.scale.y = (mtH / maxHeight) * sc.scale.y;
sc.frameIsScaledDown = true;
sc.scaleDownFactor = 1; // We're scaling down to the size of the frame, therefore the image itself wasn't scaled
return(sc);
}
// If height OR width OR both are greater than max values
else
{
// If width is proportionally greaterer than max width, Rescale height
if (mtW / maxWidth > mtH / maxHeight)
{
sc.scaleDownFactor = maxWidth / mtW; //Scaled TO maxWidth from mtW (actual pixels width)
sc.scale.y = (mtH / maxHeight) * sc.scaleDownFactor * sc.scale.y;
sc.widthMaxxed = true;
}
else // Rescale width
{
sc.scaleDownFactor = maxHeight / mtH; //Scaled TO maxHeight from mtW (actual pixels height)
sc.scale.x = (mtW / maxWidth) * sc.scaleDownFactor * sc.scale.x;
sc.heightMaxxed = true;
}
}
return(sc);
}
