Method DrawRotatedDecal

olcPixelGameEngine.h:3844–3882

	}

	void PixelGameEngine::DrawRotatedDecal(const olc::vf2d& pos, olc::Decal* decal, const float fAngle, const olc::vf2d& center, const olc::vf2d& scale, const olc::Pixel& tint)
	{
		DecalInstance di;
		di.decal = decal;
		di.pos.resize(4);
		di.uv = { { 0.0f, 0.0f}, {0.0f, 1.0f}, {1.0f, 1.0f}, {1.0f, 0.0f} };
		di.w = { 1, 1, 1, 1 };
		di.tint = { tint, tint, tint, tint };
		di.points = 4;
		di.pos[0] = (olc::vf2d(0.0f, 0.0f) - center) * scale;
		di.pos[1] = (olc::vf2d(0.0f, float(decal->sprite->height)) - center) * scale;
		di.pos[2] = (olc::vf2d(float(decal->sprite->width), float(decal->sprite->height)) - center) * scale;
		di.pos[3] = (olc::vf2d(float(decal->sprite->width), 0.0f) - center) * scale;
		float c = cos(fAngle), s = sin(fAngle);
		for (int i = 0; i < 4; i++)
		{
			di.pos[i] = pos + olc::vf2d(di.pos[i].x * c - di.pos[i].y * s, di.pos[i].x * s + di.pos[i].y * c);
			di.pos[i] = di.pos[i] * vInvScreenSize * 2.0f - olc::vf2d(1.0f, 1.0f);
			di.pos[i].y *= -1.0f;
			di.w[i] = 1;
		}
		di.mode = nDecalMode;
		di.structure = nDecalStructure;
		//vLayers[nTargetLayer].vecDecalInstance.push_back(di);


		GPUTask task;
		task.decal = decal;
		task.mode = nDecalMode;
		task.structure = nDecalStructure;
		task.depth = false;
		task.vb = {
			{di.pos[0].x, di.pos[0].y, 0.0f, 1.0f, 0.0f, 0.0f, tint.n},
			{di.pos[1].x, di.pos[1].y, 0.0f, 1.0f, 0.0f, 1.0f, tint.n},
			{di.pos[2].x, di.pos[2].y, 0.0f, 1.0f, 1.0f, 1.0f, tint.n},
			{di.pos[3].x, di.pos[3].y, 0.0f, 1.0f, 1.0f, 0.0f, tint.n},
		};
		vLayers[nTargetLayer].vecGPUTasks.push_back(task);
	}


	void PixelGameEngine::DrawPartialRotatedDecal(const olc::vf2d& pos, olc::Decal* decal, const float fAngle, const olc::vf2d& center, const olc::vf2d& source_pos, const olc::vf2d& source_size, const olc::vf2d& scale, const olc::Pixel& tint)