C++ CL_GraphicContext::reset_pen方法代码示例

void CL_CollisionOutline::draw(
	float x,
	float y,
	const CL_Colorf &color,
	CL_GraphicContext &gc)
{
	// Draw collision outline (Contours are assumed as closed polygons, hence we use line-loop)
	for(unsigned int i = 0; i < impl->contours.size(); i++)
	{
		// Draw the contour
		unsigned int numpoints = impl->contours[i].get_points().size();
		for(unsigned int s = 0; s < numpoints; s++)
		{
			const CL_Pointf &p1 = impl->contours[i].get_points()[s];
			const CL_Pointf &p2 = impl->contours[i].get_points()[(s+1) % numpoints];
			CL_Draw::line(gc, x + p1.x + 0.5f, y + p1.y + 0.5f, x + p2.x + 0.5f, y + p2.y + 0.5f, color);
		}

		// Add points (as opposite color)
		CL_Colorf colorinv(1.0f-color.get_red(),1.0f-color.get_green(),1.0f-color.get_blue());

		CL_Pen pen;
		pen.set_point_size(2.0);
		gc.set_pen(pen);

		for(unsigned int s1 = 0; s1 < numpoints; s1++)
		{
			const CL_Pointf &p1 = impl->contours[i].get_points()[s1];
			CL_Draw::point(gc, x + p1.x + 0.5f, y + p1.y + 0.5f, colorinv);
		}

		gc.reset_pen();
	}
}

//.........这里部分代码省略.........
	{
		throw CL_Exception(cl_format("Unable to compile vertex shader object: %1", vertex_shader.get_info_log()));
	}

	CL_ShaderObject fragment_shader(gc, cl_shadertype_fragment, text_shader_fragment);
	if(!fragment_shader.compile())
	{
		throw CL_Exception(cl_format("Unable to compile fragment shader object: %1", fragment_shader.get_info_log()));
	}

	CL_ProgramObject program_object(gc);
	program_object.attach(vertex_shader);
	program_object.attach(fragment_shader);
	program_object.bind_attribute_location(0, "InPosition");
	program_object.bind_attribute_location(1, "InColor");
	if (!program_object.link())
	{
		throw CL_Exception(cl_format("Unable to link program object: %1", program_object.get_info_log()));
	}

	options->request_repaint();

	unsigned int time_last = CL_System::get_time();

	while (!quit)
	{
		unsigned int time_now = CL_System::get_time();
		float time_diff = (float) (time_now - time_last);
		time_last = time_now;

		wm.process();
		wm.draw_windows(gc);

		int num_particles = options->num_particles;
		if (num_particles > max_particles)
			num_particles = max_particles;

		move_particles(time_diff, num_particles);

		const float grid_xpos = 10.0f;
		const float grid_ypos = 10.0f;

		// Draw the grid
		image_grid.draw(gc, grid_xpos, grid_ypos);

		if (num_particles > 0)
		{
			std::vector<CL_Vec2f> positions;
			std::vector<CL_Vec4f> colors;
			positions.resize(num_particles);
			colors.resize(num_particles);

			for (int cnt=0; cnt<num_particles; cnt++)
			{
				positions[cnt] = CL_Vec2f(grid_xpos + particles[cnt].xpos, grid_ypos + particles[cnt].ypos);
				switch (cnt % 3)
				{
					case 0:
						colors[cnt] = CL_Vec4f(1.0f, 0.0f, 0.0f, 1.0f);
						break;
					case 1:
						colors[cnt] = CL_Vec4f(0.0f, 1.0f, 0.0f, 1.0f);
						break;
					case 2:
						colors[cnt] = CL_Vec4f(0.0f, 0.0f, 1.0f, 1.0f);
						break;
				}
			};

			CL_BlendMode blend;
			blend.enable_blending(true);
			blend.set_blend_function(cl_blend_src_alpha, cl_blend_one, cl_blend_src_alpha, cl_blend_one);
			gc.set_blend_mode(blend);
			CL_Pen pen;
			pen.enable_point_sprite(true);
			pen.set_point_size(options->point_size);
			pen.set_point_sprite_origin(cl_point_sprite_origin_upper_left);
			gc.set_pen(pen);

			program_object.set_uniform1i("Texture0", 0);

			gc.set_texture(0, texture_particle);
			CL_PrimitivesArray prim_array(gc);
			prim_array.set_attributes(0, &positions[0]);
			prim_array.set_attributes(1, &colors[0]);
			gc.set_program_object(program_object);
			gc.draw_primitives(cl_points, num_particles, prim_array);
			gc.reset_program_object();
			gc.reset_texture(0);
			gc.reset_blend_mode();

			gc.reset_pen();
		}

		window.flip(1);

		CL_KeepAlive::process();
	}
	return 0;
}