C++ Graphics::DrawLine方法代码示例

void XWing::Draw(Core::Graphics& g)
{
	g;
	if(!isDead)
	{
		const unsigned int NUM_POINTS = sizeof(XWingPoints) / sizeof(*XWingPoints);
		for(unsigned int i = 0;i < NUM_POINTS - 1;i++)
		{
			Vector3D currentPoint = Vector3D(XWingPoints[i].x, XWingPoints[i].y) * scalar;
			Vector3D nextPoint = Vector3D(XWingPoints[(i+1) % NUM_POINTS].x, XWingPoints[(i+1) % NUM_POINTS].y) * scalar;

			const Vector3D& p1 = matrix * currentPoint + position;
			const Vector3D& p2 = matrix * nextPoint + position;

			g.DrawLine(p1.x, p1.y, p2.x, p2.y);
		}
		for(unsigned int i = NUM_POINTS - 1;i > 0;i--)
		{
			Vector3D currentPoint = Vector3D(-XWingPoints[i].x, XWingPoints[i].y) * scalar;
			Vector3D nextPoint = Vector3D(-XWingPoints[(i-1) % NUM_POINTS].x, XWingPoints[(i-1) % NUM_POINTS].y) * scalar;

			const Vector3D& p1 = matrix * currentPoint + position;
			const Vector3D& p2 = matrix * nextPoint + position;

			g.DrawLine(p1.x, p1.y, p2.x, p2.y);
		}
		if(state == GAME)
		{
			hb.Draw(g);
		}
	}
}

void Upgrade::DrawDiagonalBar(Core::Graphics& graphics, float thickness, Vector2D endPosition, Vector2D startPosition)
{
	for(int i=0; i<thickness; i++)
	{
		Vector2D start(startPosition.x, startPosition.y + i);
		Vector2D end(endPosition.x, endPosition.y + i);
		graphics.DrawLine(start.x, start.y, end.x, end.y);
	}
}

void Upgrade::DrawGraphicPoints(Core::Graphics& graphics, Vector2D* points, int numPoints)
{
	for(int i=0; i<numPoints; i++)
		{
			if(i+1 < numPoints)
			{
				Vector2D start =  points[i]+position;
				Vector2D end =  points[i+1]+position;
				graphics.DrawLine(start.x, start.y, end.x, end.y);
			}
			else
			{
				Vector2D start = points[i]+position;
				Vector2D end = points[0]+position;
				graphics.DrawLine(start.x, start.y, end.x, end.y);
			}
		}
}

void Upgrade::DrawVerticalBar(Core::Graphics& graphics, float thickness, float size, Vector2D startPosition)
{
	for(int i=0; i<thickness; i++)
	{
		Vector2D start(startPosition.x + i, startPosition.y);
		Vector2D end(startPosition.x + i, startPosition.y+size);
		graphics.DrawLine(start.x, start.y, end.x, end.y);
	}
}

void Upgrade::viewText(Core::Graphics& graphics)
{
	graphics.SetColor(RGB(6, 196, 130));
	graphics.DrawLine(position.x + (float)BOX_SIZE/2, position.y + (float)BOX_SIZE/4, position.x + (float)BOX_SIZE/2+50.0f, position.y - 200.0f);
	graphics.DrawLine(position.x + (float)BOX_SIZE/2+50.0f, position.y - 200.0f, position.x+(float)BOX_SIZE/2+400.0f, position.y-200.0f);
	if(type == armor)
	{
		graphics.DrawString(int(position.x + (float)BOX_SIZE/2+100.0f), int(position.y-180.0f), "The armor upgrade increases the rate");
		graphics.DrawString(int(position.x + (float)BOX_SIZE/2+100.0f), int(position.y-160.0f), "at which your armor regens out of combat.");
		graphics.DrawString(int(position.x + (float)BOX_SIZE/2+100.0f), int(position.y-140.0f), "Your ship regens no armor until the first");
		graphics.DrawString(int(position.x + (float)BOX_SIZE/2+100.0f), int(position.y-120.0f), "upgrade has been purchased. The ship is");
		graphics.DrawString(int(position.x + (float)BOX_SIZE/2+100.0f), int(position.y-100.0f), "'out of combat' when you haven't taken");
		graphics.DrawString(int(position.x + (float)BOX_SIZE/2+100.0f), int(position.y-80.0f), "damage in over five seconds.");
	}	
	else if(type == fuel)
	{
		graphics.DrawString(int(position.x + (float)BOX_SIZE/2+100.0f), int(position.y-180.0f), "The fuel upgrade increases the overall");
		graphics.DrawString(int(position.x + (float)BOX_SIZE/2+100.0f), int(position.y-160.0f), "efficiency of your spacecraft. What this");
		graphics.DrawString(int(position.x + (float)BOX_SIZE/2+100.0f), int(position.y-140.0f), "acutally means is that your fuel doesn't");
		graphics.DrawString(int(position.x + (float)BOX_SIZE/2+100.0f), int(position.y-120.0f), "drain like a Hummer's anymore. You've");
		graphics.DrawString(int(position.x + (float)BOX_SIZE/2+100.0f), int(position.y-100.0f), "gotta love that one mile to the gallon.");
	}	
	else if(type == health)
	{
		graphics.DrawString(int(position.x + (float)BOX_SIZE/2+100.0f), int(position.y-180.0f), "The repair upgrade increases the rate");
		graphics.DrawString(int(position.x + (float)BOX_SIZE/2+100.0f), int(position.y-160.0f), "at which these small sort-of space wrenches");
		graphics.DrawString(int(position.x + (float)BOX_SIZE/2+100.0f), int(position.y-140.0f), "spawn that increase your ship's health");
		graphics.DrawString(int(position.x + (float)BOX_SIZE/2+100.0f), int(position.y-120.0f), "when picked up. The first upgrade causes");
		graphics.DrawString(int(position.x + (float)BOX_SIZE/2+100.0f), int(position.y-100.0f), "the wrenches to start spawning whilst");
		graphics.DrawString(int(position.x + (float)BOX_SIZE/2+100.0f), int(position.y-80.0f), "continual upgrades decrease the spawn time.");
		graphics.DrawString(int(position.x + (float)BOX_SIZE/2+100.0f), int(position.y-60.0f), "Spawn times (seconds): 60/45/30/20/15. ");
		graphics.DrawString(int(position.x + (float)BOX_SIZE/2+100.0f), int(position.y-40.0f), "WARNING: The spawn time resets when ");
		graphics.DrawString(int(position.x + (float)BOX_SIZE/2+100.0f), int(position.y-20.0f), "you purchase this upgrade to the new time.");
	}
	else if(type == bullet)
	{
		graphics.DrawString(int(position.x + (float)BOX_SIZE/2+100.0f), int(position.y-180.0f), "The bullet upgrade increases the damage ");
		graphics.DrawString(int(position.x + (float)BOX_SIZE/2+100.0f), int(position.y-160.0f), "that your bullets deal to targets. Oh ");
		graphics.DrawString(int(position.x + (float)BOX_SIZE/2+100.0f), int(position.y-140.0f), "yeah by the way the enemies' health scale");
		graphics.DrawString(int(position.x + (float)BOX_SIZE/2+100.0f), int(position.y-120.0f), "as the time goes on so this upgrade might be ");
		graphics.DrawString(int(position.x + (float)BOX_SIZE/2+100.0f), int(position.y-100.0f), "a good idea, just saying.");
		graphics.DrawString(int(position.x + (float)BOX_SIZE/2+100.0f), int(position.y-80.0f), "Damage: 1(no upgrades)/2/3/5/8/12");
	}
}

void Walls::draw(Core::Graphics& g)
{
	g.SetColor(RGB(255, 100, 255));
	for(unsigned int i = 0; i< NUM_WALL_POINTS; i++)
	{
		const Vector3D& w1 = *wallShape[i];
		const Vector3D& w2 = *wallShape[(i+1) % NUM_WALL_POINTS];
		g.DrawLine(w1.x, w1.y, w2.x, w2.y);
	}
}

void Grid::draw(Core::Graphics& g)
{
	for(int i = 0; i<numRows; i++)
	{
		for(int j = 0; j<numColumns; j++)
		{
			cells[i][j].draw(g);
		}
	}
	if(enemies.numActiveTroops==0)
	{
		g.SetColor(RGB(50,255,50));
	}
	else
	g.SetColor(RGB(200,50,50));
	g.DrawString((int)(cells[9][0].position.x+(cells[9][0].width/2))-30,(int)(cells[9][0].position.y+(cells[9][0].height/2))-10, "COMPILE");
	g.DrawLine(cells[9][0].position.x, cells[9][0].position.y, cells[9][0].position.x+cells[9][0].width, cells[9][0].position.y);
	g.DrawLine(cells[9][0].position.x+cells[9][0].width, cells[9][0].position.y, cells[9][0].position.x+cells[9][0].width, cells[9][0].position.y+cells[9][0].height);
	enemies.draw(g, Vector3D(100,100));
}

void Lerper::Draw(Core::Graphics& graphics)
{
	const unsigned int NUM_LINES = sizeof(Lerp) / sizeof(*Lerp);

	graphics.SetColor(RGB(255,100,0));
	for(unsigned int i = 0; i < NUM_LINES; i++)
	{
		const Vector2D& first = Lerp[i] + position;
		const Vector2D& second = Lerp[(i+1) % NUM_LINES] + position;

		graphics.DrawLine(first.vector_x, first.vector_y, second.vector_x, second.vector_y);
	}

	const unsigned int LERP_NUM_LINES = sizeof(LerpLines) / sizeof(*LerpLines);

	graphics.SetColor(RGB(255,100,100));
	for(unsigned int i = 0; i < LERP_NUM_LINES; i++)
	{
		const Vector2D& first = LerpLines[i];
		const Vector2D& second = LerpLines[(i+1) % LERP_NUM_LINES];

		graphics.DrawLine(first.vector_x, first.vector_y, second.vector_x, second.vector_y);
	}
}

void EnemyShip::draw(Core::Graphics& g)
{
	const int numShippoints= sizeof(lerper)/sizeof(*lerper);
	Matrix3 rotato=rotato.rotate(angle);
	g.SetColor(RGB(200,100,100));
	if(!dead)
	{
		for(int i=0;i<numShippoints;i++)
		{

			const Vector2d& s1=rotato*lerper[i]+position;
			const Vector2d& s2=rotato*lerper[(i+1)%numShippoints]+position;
			g.DrawLine(s1.x,s1.y,s2.x,s2.y);
		}
	}
}

void Bullet::draw(Core::Graphics& g)
{
	position = position + (velocity * Dt);
	if((position.X < 0 || position.X > 1000) && (position.Y > 1900 || position.Y < 0))
	{
		canBeDrawn = false;
	}

	if(canBeDrawn)
	{
		for(unsigned int i = 0; i < bulletShape.numOfPoints; i++)
		{
			const Vector2& first = position + (transformationMatrix * bulletShape.shapePoints[i]);
			const Vector2& second = position + (transformationMatrix *bulletShape.shapePoints[(i + 1) % bulletShape.numOfPoints]);
			g.DrawLine(first.X, first.Y, second.X, second.Y);
		}
	}
}

void Upgrade::DrawUpgrade(Core::Graphics& graphics, Vector2D mouse, float thickness)
{
	myColor = (CheckMouse(mouse))? RGB(134, 134, 134): RGB(94,94,94);
	
	if(upgradeCooldown < .5)
	{
		upgradeCooldown += .016f;
	}
	graphics.SetColor(myColor);
	for(int i=0; i<BOX_SIZE; i++)
	{
		Vector2D start(position.x + i, position.y);
		Vector2D end(position.x + i, position.y+BOX_SIZE);
		graphics.DrawLine(start.x, start.y, end.x, end.y);
	}
	if(CheckMouse(mouse))
	{
		viewText(graphics);
		if(Core::Input::IsPressed(Core::Input::BUTTON_LEFT)&&upgradeCooldown >= .5f && myCash.getCash() >= upgradeCost && upgradeCount < 5)
		{
			upgradeCooldown = 0;
			myCash.decreaseCash(upgradeCost);
			upgradeCount++;
		}
	}
	SetUpgradeCost();
	DrawGraphic(graphics);
	graphics.SetColor(RGB(255,255,255));
	if(upgradeCount > 4)
	{
		graphics.SetColor(RGB(255,0,0));
	}
	//Draws $
	DrawHorizontalBar(graphics, thickness, Letter_Size, Vector2D(costPosition.x, costPosition.y+thickness/2));
	DrawVerticalBar(graphics, thickness, (Letter_Size-3*thickness)/2, Vector2D(costPosition.x, costPosition.y + thickness));
	DrawHorizontalBar(graphics, thickness, Letter_Size, Vector2D(costPosition.x, costPosition.y+thickness+((Letter_Size-3*thickness)/2)));
	DrawVerticalBar(graphics, thickness,(Letter_Size-3*thickness)/2, Vector2D(costPosition.x+(Letter_Size-thickness), costPosition.y + thickness*2+((Letter_Size-3*thickness)/2)));
	DrawHorizontalBar(graphics, thickness, Letter_Size, Vector2D(costPosition.x, costPosition.y+2*thickness + (2*((Letter_Size-3*thickness)/2)-thickness/2)));
	DrawVerticalBar(graphics, thickness, Letter_Size, Vector2D(costPosition.x+(Letter_Size/2.5f), costPosition.y));
	//Draws Cost
	DrawLetters(graphics, thickness);
}