[ { 1 0 0 } ] [ { 0 1 0 } { 0 0 1 } cross ] unit-test
[ { 0 1 0 } ] [ { 0 0 1 } { 1 0 0 } cross ] unit-test
[ { 0.0 -0.707 0.707 } ] [ { 1.0 0.0 0.0 } { 0.0 0.707 0.707 } cross ] unit-test
-
+[ { 0 -2 2 } ] [ { -1 -1 -1 } { 1 -1 -1 } cross ] unit-test
[ { 1 0 0 } ] [ { 1 1 0 } { 1 0 0 } proj ] unit-test
[ { { 4181 6765 } { 6765 10946 } } ]
[ [ { 1 2 0 } vshuffle ] [ { 2 0 1 } vshuffle ] bi* v* ]
[ [ { 2 0 1 } vshuffle ] [ { 1 2 0 } vshuffle ] bi* v* ] 2bi v- ; inline
+:: normal ( vec1 vec2 vec3 -- vec4 )
+ vec2 vec1 v- vec3 vec1 v- cross normalize ; inline
+
: proj ( v u -- w )
[ [ v. ] [ norm-sq ] bi / ] keep n*v ;
! Test cross product
[ float-4{ 0.0 0.0 1.0 0.0 } ] [ float-4{ 1.0 0.0 0.0 0.0 } float-4{ 0.0 1.0 0.0 0.0 } cross ] unit-test
+[ float-4{ 0.0 0.0 1.0 0.0 } ] [ float-4{ 1.0 0.0 0.0 0.0 } float-4{ 0.0 1.0 0.0 0.0 } [ { float-4 float-4 } declare cross ] compile-call ] unit-test
[ float-4{ 0.0 -1.0 0.0 0.0 } ] [ float-4{ 1.0 0.0 0.0 0.0 } float-4{ 0.0 0.0 1.0 0.0 } cross ] unit-test
+[ float-4{ 0.0 -1.0 0.0 0.0 } ] [ float-4{ 1.0 0.0 0.0 0.0 } float-4{ 0.0 0.0 1.0 0.0 } [ { float-4 float-4 } declare cross ] compile-call ] unit-test
[ double-4{ 0.0 0.0 1.0 0.0 } ] [ double-4{ 1.0 0.0 0.0 0.0 } double-4{ 0.0 1.0 0.0 0.0 } cross ] unit-test
+[ double-4{ 0.0 0.0 1.0 0.0 } ] [ double-4{ 1.0 0.0 0.0 0.0 } double-4{ 0.0 1.0 0.0 0.0 } [ { double-4 double-4 } declare cross ] compile-call ] unit-test
[ double-4{ 0.0 -1.0 0.0 0.0 } ] [ double-4{ 1.0 0.0 0.0 0.0 } double-4{ 0.0 0.0 1.0 0.0 } cross ] unit-test
+[ double-4{ 0.0 -1.0 0.0 0.0 } ] [ double-4{ 1.0 0.0 0.0 0.0 } double-4{ 0.0 0.0 1.0 0.0 } [ { double-4 double-4 } declare cross ] compile-call ] unit-test
! CSSA bug
[ 4000000 ] [
100000 <uint-vector>
(parse-bunny-model) ; inline
-:: normal ( a b c -- normal )
- c a v-
- b a v- cross normalize ; inline
-
:: calc-bunny-normal ( a b c vertexes -- )
a b c [ vertexes nth vertex>> ] tri@ normal :> n
a b c [ vertexes nth [ n v+ ] change-normal drop ] tri@ ; inline