diff options
Diffstat (limited to '2d/transform.scm')
| -rw-r--r-- | 2d/transform.scm | 32 |
1 files changed, 7 insertions, 25 deletions
diff --git a/2d/transform.scm b/2d/transform.scm index 09e4398..9b7e05d 100644 --- a/2d/transform.scm +++ b/2d/transform.scm @@ -27,20 +27,11 @@ #:use-module (srfi srfi-42) #:use-module (2d math) #:use-module (2d vector) - #:export (make-transform - make-transform* - null-transform - identity-transform - transform? - transform-matrix - transpose - transform-vector2 - transform-position - transform+ - transform* - transform-translate - transform-scale - rotate-x rotate-y rotate-z + #:export (make-transform null-transform identity-transform + transform? transform-matrix + transpose transform-vector2 transform-position + transform+ transform* + scale translate rotate-x rotate-y rotate-z orthographic-projection perspective-projection)) (define-record-type <transform> @@ -76,15 +67,6 @@ column-major format." (array-set! matrix dd 3 3) (%make-transform matrix))) -(define* (make-transform* #:optional #:key (translate #(0 0)) - (scale #(1 1)) (rotate 0)) - "Return a new transform that is the result of the composition of the -given TRANSLATE, SCALE, and ROTATE values. Both TRANSLATE and SCALE -are vector2 values, while ROTATE is a number." - (transform* (transform-scale scale) - (rotate-z rotate) - (transform-translate translate))) - (define null-transform (%make-transform (make-4x4-matrix))) @@ -149,7 +131,7 @@ identity-transform if called without any arguments." (%make-transform m3))) (reduce mul identity-transform transforms)) -(define (transform-translate v) +(define (translate v) "Return a new transform that translates the x and y axes by the vector V." (make-transform 1 0 0 0 @@ -157,7 +139,7 @@ vector V." 0 0 1 0 (vx v) (vy v) 0 1)) -(define (transform-scale v) +(define (scale v) "Return a new transform that scales the X and Y axes by the vector V." (make-transform (vx v) 0 0 0 |