プログラマ専用SNS ミクプラ

コード:

	case WM_MOUSEMOVE:
		GetCursorPos(&CursorPos);
		CltToScr.x=0;
		CltToScr.y=0;
		ClientToScreen(hWnd,&CltToScr);
		ClientToScreen(hWnd,&CursorPos);
		mouseposX+=(CltToScr.x+WINDOW_WIDTH/2)-CursorPos.x;
		mouseposY+=(CltToScr.y+WINDOW_HEIGHT/2)-CursorPos.y;
		SetCursorPos(WINDOW_WIDTH/2,WINDOW_HEIGHT/2);
		return 0；

コード:

#include "DxLib.h"

int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow)
{
	ChangeWindowMode(TRUE);
	if (DxLib_Init() != 0) return 0;
	SetDrawScreen(DX_SCREEN_BACK);

	VECTOR cameraPosision = VGet(0.0f, 0.0f, 0.0f);
	VECTOR cameraTarget = VGet(0.0f, 0.0f, 100.0f);
	VECTOR cameraUp = VGet(0.0f, 1.0f, 0.0f);

	SetupCamera_Perspective(DX_PI_F * 2 / 4);

	int xDist = 0;
	int yDist = 0;
	int xPosOld = 640/2;
	int yPosOld = 480/2;
	SetMousePoint(xPosOld, yPosOld);

	while (ProcessMessage() == 0 && ScreenFlip() == 0 && ClearDrawScreen() == 0) {
		{
			int xPos, yPos;
			GetMousePoint(&xPos, &yPos);
			SetMousePoint(xPosOld, yPosOld);

			xDist += xPos - xPosOld;
			yDist += yPos - yPosOld;

			// 真上や真下より後ろには回さない ※1000ピクセルで1周換算
			if (yDist < -250) yDist = -250;
			if (yDist >  250) yDist =  250;

			// 回転行列を作る
			MATRIX mat = MGetIdent();
			mat = MMult(mat, MGetRotX(yDist * DX_PI_F * 2 / 1000)); // ※1000ピクセルで1周換算
			mat = MMult(mat, MGetRotY(xDist * DX_PI_F * 2 / 1000)); // ※1000ピクセルで1周換算

			// カメラの向きを回転
			VECTOR target = VTransform(cameraTarget, mat);
			VECTOR up = VTransform(cameraUp, mat); // ※真上や真下で破綻させないために必要
			// ※カメラ位置も原点以外なら要変換
			SetCameraPositionAndTargetAndUpVec(cameraPosision, target, up);
		}
		{
			VECTOR v[] = {
				VGet(-100.0f,  100.0f,  100.0f),
				VGet( 100.0f,  100.0f,  100.0f),
				VGet(-100.0f, -100.0f,  100.0f),
				VGet( 100.0f, -100.0f,  100.0f),
				VGet( 100.0f,  100.0f, -100.0f),
				VGet( 100.0f, -100.0f, -100.0f),
				VGet(-100.0f,  100.0f, -100.0f),
				VGet(-100.0f, -100.0f, -100.0f),
			};
			int idxs[] = {
				0,6,1,4,1,6,0,1,2,3,2,1,1,4,3,5,3,4,4,6,5,7,5,6,6,0,7,2,7,0,2,3,7,5,7,3,
			};
			int color[] = {
				GetColor(  0,  0,255),
				GetColor(255,255,255),
				GetColor(255,192,  0),
				GetColor(255,255,  0),
				GetColor(255,  0,  0),
				GetColor(  0,255,  0),
			};
			for (int i=0; i<6*2; i++) {
				DrawTriangle3D(v[idxs[i*3+0]], v[idxs[i*3+1]], v[idxs[i*3+2]], color[i/2], TRUE);
			}
		}
		DrawString(0, 0, "終了 : Alt + F4", GetColor(0,0,0));
	}

	DxLib_End();
	return 0;
}