;============================================================
;   iron_stl_dxlib.hsp — iron_stl の DxLib 描画アドオン
;
;   DxLib (hspdxlib.as) を #include した状態で本ファイルを #include
;   すると stl_draw_dxlib / stl_draw_wire が使えるようになる。
;
;   例:
;     #include "hspdxlib.as"
;     #include "iron_stl.hsp"
;     #include "iron_stl_dxlib.hsp"
;
;     stl_load mesh, n_tri, "model.stl"
;     stl_draw_dxlib mesh, n_tri, GetColor(255,128,0), 0

#ifndef __iron_stl_dxlib__
#define __iron_stl_dxlib__

#module "m_iron_stl_dx"

;---------------------------------------------------------
; stl_draw_dxlib  var mesh, n_tri, int color, int face_flag
;     face_flag: 0 = 塗りつぶし / 1 = ワイヤーフレーム
;---------------------------------------------------------
#deffunc stl_draw_dxlib var mesh, int n_tri, int color, int face_flag
	if n_tri <= 0 : return -1
	ddim v0, 3
	ddim v1, 3
	ddim v2, 3
	repeat n_tri
		base = cnt * 12
		v0(0) = mesh(base + 0) : v0(1) = mesh(base + 1) : v0(2) = mesh(base + 2)
		v1(0) = mesh(base + 3) : v1(1) = mesh(base + 4) : v1(2) = mesh(base + 5)
		v2(0) = mesh(base + 6) : v2(1) = mesh(base + 7) : v2(2) = mesh(base + 8)
		DrawTriangle3DD v0, v1, v2, color, face_flag ^ 1
	loop
	return 0

;---------------------------------------------------------
; stl_draw_wire  var mesh, n_tri, int color
;     全三角形をワイヤーフレームで描画
;---------------------------------------------------------
#deffunc stl_draw_wire var mesh, int n_tri, int color
	if n_tri <= 0 : return -1
	ddim v0, 3
	ddim v1, 3
	ddim v2, 3
	repeat n_tri
		base = cnt * 12
		v0(0) = mesh(base + 0) : v0(1) = mesh(base + 1) : v0(2) = mesh(base + 2)
		v1(0) = mesh(base + 3) : v1(1) = mesh(base + 4) : v1(2) = mesh(base + 5)
		v2(0) = mesh(base + 6) : v2(1) = mesh(base + 7) : v2(2) = mesh(base + 8)
		DrawLine3DD v0, v1, color
		DrawLine3DD v1, v2, color
		DrawLine3DD v2, v0, color
	loop
	return 0

#global

#endif