I have two game objects, one for main canvas and other for editor (a dummy version).
The scale for main go is 1, 1, 1 and other one (dummy) is .3, .3, .3. What I want to do is scale the main gameobject proportionally based on the scale percent that the user sets to dummy go, how I can do this?
DummyGameObject.transform.localScale = CanvasGameObject.transform.localScale * 0.33f; //or
DummyGameObject.transform.localScale = CanvasGameObject.transform.localScale / 3;
Related
The positions and sizes of my Game Pieces, as set by CGPoint(..) and CGRect(..), don’t make arithmetic sense to me when looked at with respect to the width and height of the surrounding container of all Game Pieces?
Let me illustrate with just one specific example –
I call the surrounding container = “room”.
One of many specific Game Pieces = “rock”.
Here’s the math
roomWidth = Double(UIScreen.main.bounds.width)
roomHeight = Double(UIScreen.main.bounds.height)
While in Portrait mode:
roomWidth = 744.0
roomHeight = 1133.0
When rotated to Landscape mode:
roomWidth = 1133.0,
roomHeight = 744.0
So far so good .. here’s the problem:
When I look at my .sks file, the width of the “rock” and its adjacent game pieces far exceeds the roomWidth; for example,
Widths of rock + paddle + tree = 507 + 768 + 998 which obviously exceeds the room’s width for either Portrait or Landscape mode – and this math doesn’t even address the separation between Game Pieces.
The final math “craziness” looks at the swift xPos values for each Game Piece as specified in my .sks file:
Room: xPos = 40,
Rock: xPos = -390,
Paddle: xPos = -259,
Tree: xPos = 224
I cannot grasp the two high negative numbers .. to me, that means the Rock and the Paddle shouldn’t even be visible .. seriously off-screen.
One significant addition = I did set the Autoresizing Mask to center horizontally and vertically
I need a serious infusion of “smarts” here.
The default anchorPoint of an sks file (SpriteKit Scene file) is (0.5, 0.5). So the origin (0, 0) of the scene is drawn at the center of the SKView. You can change the anchor point in the Attributes inspector when editing the sks file. The default means that negative coordinates not too far from the origin will be visible in the SKView.
The scene also has a scaleMode property which determines how the scene is scaled if its size doesn't match the SKView's size. The default is .fill, which means the view scales the scene's axes independently so the scene's size exactly fills the view.
I have a grid of game objects in which I can change the number of game objects that fit inside the grid. The grid is a child of a game object. I wish to rescale all other grids to match my 4X4 grid size programmatically.
Desired size
Grid to rescale
Each game object is 1 unit and the parent transform scale is (1,1,1). I know that if my grid is 8X8 that I would probably need to rescale to 0.5. I only have an issue in trying to calculate the rescale number.
So again as said it is pretty simple maths.
You have a grid with side length 5, you want 4.
So you normalize it via
currentSize / 5.0f * 4.0f
which would be a factor of 0.8f.
Since you need to apply it to each side of your grid you share that so it has to be 0.8f * 0.8f which is a factor of 0.16f.
Or if you say it is 8x8 then the same calculations
currentSize / 8f * 4f
so a factor of 0.5. then squared so 0.25f.
#derHugo Answer was good. For me, I answered my answer was:
gridScaleratio = 1.0f / ((gridSize * gridSize) / (gridSize * 4.0f));
...
playerGrid.transform.localScale = new Vector3(gridScaleratio, gridScaleratio, gridScaleratio);
Is there a way I can define a 3d model size in unity? Like height = 1, width = 3, depth = 3?
I want the model to take a defined space in unity's scene, no matter how big or small I make the fbx in Blender. So I can't use scale as changing the model size in Blender will break this scaling.
I need it to be a square 3 wide, 3 long and 1 high, not depending on the model's size that is exported from Blender. Is it possible?
The same question but from another angle - how to set model size in unity? There is only the scale setting, but no size setting. This looks weird.
So far I have found a workaround like getting object's rendered bounds and adjusting scaling quotient in a script, but this doesn't seem right to me.
You can use the Mesh.bounds to get the 3D model size without applied scaling.
Then you recalculate the scale according to your needs e.g.
// The desired scales
// x = width
// y = height
// z = depth
var targetScale = new Vector3(3, 1, 3);
var meshFilter = GetComponent<MeshFilter>();
var mesh = meshFilter.mesh;
// This would be equal to the 3D bounds if scale was 1,1,1
var meshBounds = mesh.bounds.size;
// This would make the model have world scale 1,1,1
var invertMeshBounds = new Vector3(1/meshBounds.x, 1/meshBounds.y, 1/meshBounds.z);
// Use this if you want exactly the scale 3,1,3 but maybe stretching the fbx
var finalScale = Vector3.Scale(invertMeshBounds, targetScale);
As I understand you want to keep the correct relative scales of the 3D model but make it fit into the defined targetScale so I would use the smallest of the 3 values as scaling factor
var minFactor = Mathf.Min(finalScale.x, finalScale.y);
minFactor = Mathf.Min(minFactor, finalScale.z);
transform.localScale = Vector3.one * minFactor;
I have multiple collada files with objects (humans) of various sizes, created from different 3D program sources. I desire to scale the objects so they fit inside frame or box. From my reading, I cant using the bounding box to scale the node, so what feature do you utilize to scale the nodes, relative to each other?
// humanNode = {...get node, which is some unknown size }
let (minBound, maxBound) = humanNode.boundingBox
let blockNode = SCNNode(geometry: SCNBox(width: 10, height: 10, length: 10, chamferRadius: 0))
// calculate scale factor so it fits inside of box without having known its size before hand.
s = { ...some method to calculate the scale to fit the humanNode into the box }
humanNode.scale = SCNVector3Make(s, s, s)
How get its size relative to the literal box I want to put it in and scale it?
Is it possible to draw the node off screen to measure its size?
I am facing difficulties with 3D object size and its x, y, z positioning. I added the 3D object to sceneView, but its size is too big. How do I reduce the 3D object size based on my requirement? Can anyone help me handle the 3D object's size and its x, y, z positioning?
I am using Swift to code.
Each SCNNode has a scale property:
Each component of the scale vector multiplies the corresponding
dimension of the node’s geometry. The default scale is 1.0 in all
three dimensions. For example, applying a scale of (2.0, 0.5, 2.0) to
a node containing a cube geometry reduces its height and increases its
width and depth.
Which can be set as follows:
var scale: SCNVector3 { get set }
If for example your node was called myNode, you could thus use the following to scale it by 1/10 of it's original size:
myNode.scale = SCNVector3(0.1, 0.1, 0.1)
Regarding positioning SCNNodes this can be achieved by setting the position property:
The node’s position locates it within the coordinate system of its
parent, as modified by the node’s pivot property. The default position
is the zero vector, indicating that the node is placed at the origin
of the parent node’s coordinate system.
If therefore, you wanted to add your SCNNode to the center of the worldOrigin, and 1m away from the camera you can use the following:
myNode.position = SCNVector3(0, 0, -1)
Hope it helps...