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transform
RPaladin edited this page Apr 20, 2022
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Transform describes the location, rotation, scale and dimensions of object. To access the transform in Haxe trait:
var transform = object.transform;
To access transform properties in object-space:
var m = transform.local; // Matrix
var l = transform.loc; // Location
var r = transform.rot; // Rotation
var s = transform.scale; // Scale
To access transform properties in world-space:
var m = transform.world; // Matrix
var l = transform.world.getLoc(); // Location
var r = new Quat().fromMat(transform.world); // Rotation
var s = transform.world.getScale(); // Scale
To manipulate the transform:
transform.translate(1, 2, 3); // x, y, z
transform.rotate(Vec4.zAxis(), 1.2); // Axis, angle in radians
Alternatively, modify the transform properties directly. To apply the changes, call buildMatrix()
:
transform.loc.set(0, 5, 0);
transform.scale.x = 2.0;
transform.buildMatrix();
To set location, rotation and scale using a matrix:
var m = Mat4.identity();
transform.setMatrix(m);
To retrieve world-space up, right and look vectors:
var up = transform.up(); // Z axis
var right = transform.right(); // X axis
var look = transform.look(); // Y axis
Example: