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|
type vec3 {
x: float
y: float
z: float
}
fn print-vec3 screen: (addr screen), _v: (addr vec3) {
var v/esi: (addr vec3) <- copy _v
print-string screen, "("
var tmp/eax: (addr float) <- get v, x
print-float screen, *tmp
print-string screen, ", "
tmp <- get v, y
print-float screen, *tmp
print-string screen, ", "
tmp <- get v, z
print-float screen, *tmp
print-string screen, ")"
}
fn vec3-add-to _v1: (addr vec3), _v2: (addr vec3) {
var v1/edi: (addr vec3) <- copy _v1
var v2/esi: (addr vec3) <- copy _v2
# v1.x += v2.x
var arg1/eax: (addr float) <- get v1, x
var arg2/ecx: (addr float) <- get v2, x
var result/xmm0: float <- copy *arg1
result <- add *arg2
copy-to *arg1, result
# v1.y += v2.y
arg1 <- get v1, y
arg2 <- get v2, y
result <- copy *arg1
result <- add *arg2
copy-to *arg1, result
# v1.z += v2.z
arg1 <- get v1, z
arg2 <- get v2, z
result <- copy *arg1
result <- add *arg2
copy-to *arg1, result
}
fn vec3-subtract-from v1: (addr vec3), v2: (addr vec3) {
var tmp-storage: vec3
var tmp/eax: (addr vec3) <- address tmp-storage
copy-object v2, tmp
vec3-negate tmp
vec3-add-to v1, tmp
}
fn vec3-negate v: (addr vec3) {
var negative-one/eax: int <- copy -1
var negative-one-f/xmm0: float <- convert negative-one
vec3-scale-up v, negative-one-f
}
fn vec3-scale-up _v: (addr vec3), f: float {
var v/edi: (addr vec3) <- copy _v
# v.x *= f
var dest/eax: (addr float) <- get v, x
var result/xmm0: float <- copy *dest
result <- multiply f
copy-to *dest, result
# v.y *= f
dest <- get v, y
result <- copy *dest
result <- multiply f
copy-to *dest, result
# v.z *= f
dest <- get v, z
result <- copy *dest
result <- multiply f
copy-to *dest, result
}
fn vec3-scale-down _v: (addr vec3), f: float {
var v/edi: (addr vec3) <- copy _v
# v.x /= f
var dest/eax: (addr float) <- get v, x
var result/xmm0: float <- copy *dest
result <- divide f
copy-to *dest, result
# v.y /= f
dest <- get v, y
result <- copy *dest
result <- divide f
copy-to *dest, result
# v.z /= f
dest <- get v, z
result <- copy *dest
result <- divide f
copy-to *dest, result
}
fn vec3-unit in: (addr vec3), out: (addr vec3) {
var len/xmm0: float <- vec3-length in
#? print-string 0, "len: "
#? print-float 0, len
#? print-string 0, "\n"
copy-object in, out
vec3-scale-down out, len
}
fn vec3-length v: (addr vec3) -> _/xmm0: float {
var result/xmm0: float <- vec3-length-squared v
result <- square-root result
return result
}
fn vec3-length-squared _v: (addr vec3) -> _/xmm0: float {
var v/esi: (addr vec3) <- copy _v
# result = v.x * v.x
var src/eax: (addr float) <- get v, x
var tmp/xmm1: float <- copy *src
tmp <- multiply tmp
var result/xmm0: float <- copy tmp
# result += v.y * v.y
src <- get v, y
tmp <- copy *src
tmp <- multiply tmp
result <- add tmp
# result += v.z * v.z
src <- get v, z
tmp <- copy *src
tmp <- multiply tmp
result <- add tmp
return result
}
fn vec3-dot _v1: (addr vec3), _v2: (addr vec3) -> _/xmm0: float {
}
fn vec3-cross _v1: (addr vec3), _v2: (addr vec3), out: (addr vec3) {
}
|