glEvalCoord2d

関数

2次元エバリュエータを倍精度座標で評価する。

DLLOPENGL32.dll呼出規約winapi

シグネチャ

// OPENGL32.dll
#include <windows.h>

void glEvalCoord2d(
    DOUBLE u,
    DOUBLE v
);

パラメーター

名前	型	方向
u	DOUBLE	in
v	DOUBLE	in

戻り値の型: void

各言語での呼び出し定義

// OPENGL32.dll
#include <windows.h>

void glEvalCoord2d(
    DOUBLE u,
    DOUBLE v
);

[DllImport("OPENGL32.dll", ExactSpelling = true)]
static extern void glEvalCoord2d(
    double u,   // DOUBLE
    double v   // DOUBLE
);

<DllImport("OPENGL32.dll", ExactSpelling:=True)>
Public Shared Sub glEvalCoord2d(
    u As Double,   ' DOUBLE
    v As Double   ' DOUBLE
)
End Sub

' u : DOUBLE
' v : DOUBLE
Declare PtrSafe Sub glEvalCoord2d Lib "opengl32" ( _
    ByVal u As Double, _
    ByVal v As Double)
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

glEvalCoord2d = ctypes.windll.opengl32.glEvalCoord2d
glEvalCoord2d.restype = None
glEvalCoord2d.argtypes = [
    ctypes.c_double,  # u : DOUBLE
    ctypes.c_double,  # v : DOUBLE
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('OPENGL32.dll')
glEvalCoord2d = Fiddle::Function.new(
  lib['glEvalCoord2d'],
  [
    Fiddle::TYPE_DOUBLE,  # u : DOUBLE
    Fiddle::TYPE_DOUBLE,  # v : DOUBLE
  ],
  Fiddle::TYPE_VOID)

#[link(name = "opengl32")]
extern "system" {
    fn glEvalCoord2d(
        u: f64,  // DOUBLE
        v: f64  // DOUBLE
    );
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("OPENGL32.dll")]
public static extern void glEvalCoord2d(double u, double v);
"@
$api = Add-Type -MemberDefinition $sig -Name 'OPENGL32_glEvalCoord2d' -Namespace Win32 -PassThru
# $api::glEvalCoord2d(u, v)

#uselib "OPENGL32.dll"
#func global glEvalCoord2d "glEvalCoord2d" double, double
; glEvalCoord2d u, v
; u : DOUBLE -> "double"
; v : DOUBLE -> "double"

#uselib "OPENGL32.dll"
#func global glEvalCoord2d "glEvalCoord2d" double, double
; glEvalCoord2d u, v
; u : DOUBLE -> "double"
; v : DOUBLE -> "double"

; void glEvalCoord2d(DOUBLE u, DOUBLE v)
#uselib "OPENGL32.dll"
#func global glEvalCoord2d "glEvalCoord2d" double, double
; glEvalCoord2d u, v
; u : DOUBLE -> "double"
; v : DOUBLE -> "double"

import (
	"math"
	"golang.org/x/sys/windows"
	"unsafe"
)

var (
	opengl32 = windows.NewLazySystemDLL("OPENGL32.dll")
	procglEvalCoord2d = opengl32.NewProc("glEvalCoord2d")
)

// u (DOUBLE), v (DOUBLE)
r1, _, err := procglEvalCoord2d.Call(
	uintptr(math.Float64bits(u)),
	uintptr(math.Float64bits(v)),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // void
// 注意: float/double 引数は proc.Call では XMM レジスタに渡せません。
// windows.SyscallN(proc.Addr(), math.Float64bits(x), ...) もしくは cgo を使用してください。

procedure glEvalCoord2d(
  u: Double;   // DOUBLE
  v: Double   // DOUBLE
); stdcall;
  external 'OPENGL32.dll' name 'glEvalCoord2d';

result := DllCall("OPENGL32\glEvalCoord2d"
    , "Double", u   ; DOUBLE
    , "Double", v   ; DOUBLE
    , "Int")   ; return: void

●glEvalCoord2d(u, v) = DLL("OPENGL32.dll", "int glEvalCoord2d(double, double)")
# 呼び出し: glEvalCoord2d(u, v)
# u : DOUBLE -> "double"
# v : DOUBLE -> "double"
# なでしこ1は32bit・ANSI(Shift_JIS)。文字列=char*(ANSI)、ポインタ/ハンドル=void*(4byte)。