World 응용

중요핵심

1. 여러개 상자 만들기

2. Random으로 이용해서 크기, 위치 지정

 -> D3DXMatrixScaling, D3DXMatrixTranslation

3. index용 ImGui 만들고 해당 인덱스 조종 및 크기 조종

4. 특정키 누르면 모든 네모들 회전

 ->D3DXMatrixRotation

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CPP

#include "stdafx.h"
#include "WorldDemo.h"
 
void WorldDemo::Initialize()
{
	shader = new Shader(L"04_World.fxo");
 
	{
		vertices[0].Position = Vector3(-0.5f, -0.5f, +0.0f);
		vertices[1].Position = Vector3(-0.5f, +0.5f, +0.0f);
		vertices[2].Position = Vector3(+0.5f, -0.5f, +0.0f);
		vertices[3].Position = Vector3(+0.5f, -0.5f, +0.0f);
		vertices[4].Position = Vector3(-0.5f, +0.5f, +0.0f);
		vertices[5].Position = Vector3(+0.5f, +0.5f, +0.0f);
 
 
		D3D11_BUFFER_DESC desc;
		ZeroMemory(&desc, sizeof(D3D11_BUFFER_DESC));
		desc.ByteWidth = sizeof(Vertex) * 6;
		desc.BindFlags = D3D11_BIND_VERTEX_BUFFER;
 
		D3D11_SUBRESOURCE_DATA data = { 0 };
		data.pSysMem = vertices;
 
		Check(D3D::GetDevice()->CreateBuffer(&desc, &data, &vertexBuffer));
	}
 
	//9개 설정
	for (UINT i = 0; i < 9; i++)
	{
		D3DXMatrixIdentity(&world[i]);
		Vector3 val;
		Matrix S, T;
 
		val = Math::RandomVec3(0.5f, 2.0f);
		D3DXMatrixScaling(&S, val.x, val.y, val.z);
 
		val = Math::RandomVec3(-2.0f, 2.0f);
		D3DXMatrixTranslation(&T, val.x, val.y, val.z);
 
		world[i] = S * T;
 
		colors[i] = Math::RandomColor4();
	}
 
}
 
void WorldDemo::Destroy()
{
	SafeDelete(shader);
	SafeRelease(vertexBuffer);
}
 
void WorldDemo::Update()
{
	if (Keyboard::Get()->Press(VK_LSHIFT))
	{
		if (Keyboard::Get()->Press(VK_RIGHT))
			world[index]._11 += 2.0f * Time::Delta();
		else if (Keyboard::Get()->Press(VK_LEFT))
			world[index]._11 -= 2.0f * Time::Delta();
 
		if (Keyboard::Get()->Press(VK_UP))
			world[index]._22 += 2.0f * Time::Delta();
		else if (Keyboard::Get()->Press(VK_DOWN))
			world[index]._22 -= 2.0f * Time::Delta();
	}
	else
	{
		if (Keyboard::Get()->Press(VK_RIGHT))
			world[index]._41 += 2.0f * Time::Delta();
		else if (Keyboard::Get()->Press(VK_LEFT))
			world[index]._41 -= 2.0f * Time::Delta();
 
		if (Keyboard::Get()->Press(VK_UP))
			world[index]._42 += 2.0f * Time::Delta();
		else if (Keyboard::Get()->Press(VK_DOWN))
			world[index]._42 -= 2.0f * Time::Delta();
	}
 
	//Rotation 변경
	if (Keyboard::Get()->Press(VK_LCONTROL))
	{
		for (auto& W : world)
		{
			Vector3 scale, rotation, position;
			Math::MatrixDecompose(W, scale, rotation, position);
			rotation.z += 10.0f * Time::Delta();
 
			Matrix S, R, T;
			D3DXMatrixScaling(&S, scale.x, scale.y, scale.z);
			D3DXMatrixTranslation(&T, position.x, position.y, position.z);
			D3DXMatrixRotationZ(&R, rotation.z);
 
			W = S * R * T;
		}
	}
	shader->AsMatrix("View")->SetMatrix(Context::Get()->View());
	shader->AsMatrix("Projection")->SetMatrix(Context::Get()->Projection());
}
 
void WorldDemo::Render()
{
	UINT stride = sizeof(Vertex);
	UINT offset = 0;
 
	D3D::GetDC()->IASetVertexBuffers(0, 1, &vertexBuffer, &stride, &offset);
	D3D::GetDC()->IASetPrimitiveTopology(D3D11_PRIMITIVE_TOPOLOGY_TRIANGLELIST);
 
	static UINT Pass = 0;
	ImGui::InputInt("Pass", (int*)&Pass);
	Pass %= 2;
 
	ImGui::InputInt("Index", (int*)&index);
	index %= 9;
 
	//9개 월드, 컬러 배치
	for (UINT i = 0; i < 9; i++)
	{
		shader->AsMatrix("World")->SetMatrix(world[i]);
		shader->AsVector("Color")->SetFloatVector(colors[i]);
		shader->Draw(0, Pass, 6);
	}
}
 

 

 

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