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C++ operations类代码示例

原作者: [db:作者] 来自: [db:来源] 收藏 邀请

本文整理汇总了C++中operations的典型用法代码示例。如果您正苦于以下问题:C++ operations类的具体用法?C++ operations怎么用?C++ operations使用的例子?那么恭喜您, 这里精选的类代码示例或许可以为您提供帮助。



在下文中一共展示了operations类的20个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于我们的系统推荐出更棒的C++代码示例。

示例1: program_source_file

namespace oglplus {

static constants  GL;
static operations gl;

class erase_program
 : public program
{
private:
	program_source_file
	_get_source(const example_params& params)
	{
		std::string path = params.get_resource_file_path(
			example_resource_type::program_source,
			cstr_ref("028_lighting-bg.oglpprog")
		);
		return program_source_file(cstr_ref(path));
	}
public:
	uniform_location projection;

	erase_program(const example_params& params)
	 : program(build_program(_get_source(params)))
	{
		gl.use(*this);
		gl.query_location(projection, *this, "Projection");
	}

};

class lighting_program
 : public program
{
public:
	uniform_location projection, modelview;

	lighting_program(const example_params& params)
	{
		std::string path = params.get_resource_file_path(
			example_resource_type::program_source,
			cstr_ref("028_lighting-lt.oglpprog")
		);
		build_program(*this, program_source_file(cstr_ref(path)));

		gl.use(*this);

		gl.query_location(projection, *this, "Projection");
		gl.query_location(modelview, *this, "Modelview");
	}
};

class lighting_example
 : public example
{
private:
	erase_program erase_prog;
	lighting_program light_prog;

	shapes::generator_wrapper<shapes::unit_sphere_gen, 1> background;
	shapes::generator_wrapper<shapes::unit_torus_gen, 3> shape;

	float shp_turns;

	float cam_orbit;
	float cam_turns;
	float cam_pitch;

	short cam_dist_dir;
	short cam_turn_dir;
	short cam_elev_dir;

	void mod_bouncing(short& dir, float& val, float inc)
	{
		val += inc;
		if(val > 1.f)
		{
			val = 1.f;
			dir = -1;
		}
		if(val < 0.f)
		{
			val = 0.f;
			dir = +1;
		}
	}

	void mod_cam_orbit(float inc)
	{
		mod_bouncing(cam_dist_dir, cam_orbit, inc);
	}

	void mod_cam_turns(float inc)
	{
		cam_turns += inc;
		cam_turn_dir = (inc > 0)?1:-1;
	}

	void mod_cam_pitch(float inc)
	{
		mod_bouncing(cam_elev_dir, cam_pitch, inc);
//.........这里部分代码省略.........
开发者ID:matus-chochlik,项目名称:oglplu2,代码行数:101,代码来源:028_lighting.cpp


示例2: _init

namespace oglplus {

static constants  GL;
static operations gl;

class voronoi_program
 : public program
{
private:
	void _init(const program_source_file& prog_src)
	{
		for(span_size_t i=0, n=prog_src.shader_source_count(); i<n; ++i)
		{
			shader shdr(prog_src.shader_type(i));
			shdr.source(prog_src.shader_source(i));
			shdr.compile();
			shdr.report_compile_error();
			attach(shdr);
		}
		link();
		report_link_error();
	}
public:
	uniform<GLfloat> offset_loc;
	uniform<GLfloat> scale_loc;

	voronoi_program(const example_params& params)
	{
		std::string path = params.get_resource_file_path(
			example_resource_type::program_source,
			cstr_ref("014_voronoi.oglpprog")
		);
		_init(program_source_file(cstr_ref(path)));

		gl.use(*this);

		gl.query_location(offset_loc, *this, "Offset");
		gl.query_location(scale_loc, *this, "Scale");
	}
};

class random_texture
 : public texture
{
private:
	void init(const texture_image_file& image_data)
	{
		gl.bind(GL.texture_2d, *this);
		gl.texture_min_filter(GL.texture_2d, GL.nearest);
		gl.texture_mag_filter(GL.texture_2d, GL.nearest);
		gl.texture_wrap(
			GL.texture_2d,
			GL.texture_wrap_s,
			GL.repeat
		);
		gl.texture_image_2d(GL.texture_2d, image_data.spec());
	}
public:
	random_texture(const example_params& params)
	{
		std::string path = params.get_resource_file_path(
			example_resource_type::texture,
			cstr_ref("noise.256x256x3.oglptex")
		);
		init(texture_image_file(cstr_ref(path)));
	}
};

class screen_shape
{
private:
	buffer positions;
	buffer coords;
public:
	vertex_array vao;

	screen_shape(const program& prog)
	{
		gl.bind(vao);

		GLfloat position_data[4*2] = {
			-1.0f, -1.0f,
			-1.0f,  1.0f,
			 1.0f, -1.0f,
			 1.0f,  1.0f
		};

		gl.bind(GL.array_buffer, positions);
		gl.buffer_data(GL.array_buffer, position_data, GL.static_draw);

		vertex_attrib_location va_p;
		gl.query_location(va_p, prog, "Position");
		gl.vertex_array_attrib_pointer(
			va_p,
			2, GL.float_,
			false, 0, nullptr
		);
		gl.enable_vertex_array_attrib(va_p);

		GLfloat coord_data[4*2] = {
//.........这里部分代码省略.........
开发者ID:matus-chochlik,项目名称:oglplu2,代码行数:101,代码来源:014_voronoi.cpp


示例3: scale

	example_texgen(void)
	 : scale(1.0f)
	 , aspect(1.0f)
	{
		gl.uniform(erg.scale_loc, scale, scale);
		gl.disable(GL.depth_test);
	}
开发者ID:matus-chochlik,项目名称:oglplu2,代码行数:7,代码来源:008_texgen.cpp


示例4: background

	lighting_example(
		const example_params& params,
		const example_state_view& state,
		eagine::memory::buffer& temp_buffer
	): erase_prog(params)
	 , light_prog(params)
	 , background(
		temp_buffer,
		(shapes::vertex_attrib_kind::position  |0),
		36, 72
	), shape(
		temp_buffer,
		(shapes::vertex_attrib_kind::position  |0)+
		(shapes::vertex_attrib_kind::normal    |1)+
		(shapes::vertex_attrib_kind::wrap_coord|2),
		96, 144
	), shp_turns(0.0f)
	 , cam_orbit(0.0f)
	 , cam_turns(0.0f)
	 , cam_pitch(0.5f)
	 , cam_dist_dir(-1)
	 , cam_turn_dir(1)
	 , cam_elev_dir(1)
	{
		gl.clear_depth(1);
		gl.disable(GL.cull_face);

		set_projection(state);
	}
开发者ID:matus-chochlik,项目名称:oglplu2,代码行数:29,代码来源:028_lighting.cpp


示例5: resize

	void resize(const example_state_view& state)
	override
	{
		gl.viewport(state.width(), state.height());

		aspect = state.aspect();
		gl.uniform(prog.scale_loc, scale*aspect, scale);
	}
开发者ID:matus-chochlik,项目名称:oglplu2,代码行数:8,代码来源:014_voronoi.cpp


示例6: vs

    example_program(void)
    {
        shader vs(GL.vertex_shader);
        vs.source(glsl_literal(
                      "#version 140\n"

                      "uniform mat4 Projection;\n"

                      "in vec4 Position;\n"
                      "in vec3 Normal;\n"
                      "in vec3 BoxCoord;\n"
                      "in vec3 TexCoord;\n"
                      "out vec2 vertCoord;\n"
                      "out vec3 vertColor1;\n"
                      "out vec3 vertColor2;\n"

                      "void main(void)\n"
                      "{\n"
                      "	gl_Position = Projection*Position;\n"
                      "	vertColor1 = mix(BoxCoord,abs(Normal),0.5);\n"
                      "	vertColor2 = vertColor1 * 0.3;\n"
                      "	vertCoord = TexCoord.xy*(2+TexCoord.z);\n"
                      "}\n"
                  ));
        vs.compile();

        shader fs(GL.fragment_shader);
        fs.source(glsl_literal(
                      "#version 140\n"

                      "in  vec2 vertCoord;\n"
                      "in  vec3 vertColor1;\n"
                      "in  vec3 vertColor2;\n"
                      "out vec3 fragColor;\n"

                      "float pattern(vec2 tc)\n"
                      "{\n"
                      "	return float((int(tc.x)%2+int(tc.y)%2)%2);\n"
                      "}\n"

                      "void main(void)\n"
                      "{\n"
                      "	float c = pattern(vertCoord);\n"
                      "	fragColor = mix(vertColor1, vertColor2, c);\n"
                      "}\n"
                  ));
        fs.compile();

        attach(vs);
        attach(fs);
        link();
        report_link_error();

        gl.use(*this);

        gl.query_location(projection, *this, "Projection");
    }
开发者ID:matus-chochlik,项目名称:oglplu2,代码行数:57,代码来源:010_cube.cpp


示例7: init

	void init(const texture_image_file& image_data)
	{
		gl.bind(GL.texture_2d, *this);
		gl.texture_min_filter(GL.texture_2d, GL.nearest);
		gl.texture_mag_filter(GL.texture_2d, GL.nearest);
		gl.texture_wrap(
			GL.texture_2d,
			GL.texture_wrap_s,
			GL.repeat
		);
		gl.texture_image_2d(GL.texture_2d, image_data.spec());
	}
开发者ID:matus-chochlik,项目名称:oglplu2,代码行数:12,代码来源:014_voronoi.cpp


示例8:

	voronoi_program(const example_params& params)
	{
		std::string path = params.get_resource_file_path(
			example_resource_type::program_source,
			cstr_ref("014_voronoi.oglpprog")
		);
		_init(program_source_file(cstr_ref(path)));

		gl.use(*this);

		gl.query_location(offset_loc, *this, "Offset");
		gl.query_location(scale_loc, *this, "Scale");
	}
开发者ID:matus-chochlik,项目名称:oglplu2,代码行数:13,代码来源:014_voronoi.cpp


示例9:

	lighting_program(const example_params& params)
	{
		std::string path = params.get_resource_file_path(
			example_resource_type::program_source,
			cstr_ref("028_lighting-lt.oglpprog")
		);
		build_program(*this, program_source_file(cstr_ref(path)));

		gl.use(*this);

		gl.query_location(projection, *this, "Projection");
		gl.query_location(modelview, *this, "Modelview");
	}
开发者ID:matus-chochlik,项目名称:oglplu2,代码行数:13,代码来源:028_lighting.cpp


示例10: user_idle

	void user_idle(const example_state_view& state)
	override
	{
		if(state.user_idle_time() > seconds_(1))
		{
			const float t = value(state.frame_duration())*60;

			scale *= std::pow(1.f+0.05f*t, scale_dir);
			if(scale < min_scale)
			{
				scale_dir *= -1.f;
				ofs_x_dir *= -1.f;
				ofs_y_dir *= ofs_x_dir;
				scale = min_scale;
			}
			if(scale > max_scale)
			{
				scale_dir *= -1.f;
				ofs_y_dir *= -1.f;
				ofs_x_dir *= ofs_y_dir;
				scale = max_scale;
			}

			offset_x += ofs_x_dir*t*scale/30;
			offset_y += ofs_y_dir*t*scale/30;

			gl.uniform(prog.offset_loc, offset_x, offset_y);
			gl.uniform(prog.scale_loc, scale*aspect, scale);
		}
	}
开发者ID:matus-chochlik,项目名称:oglplu2,代码行数:30,代码来源:014_voronoi.cpp


示例11: resize

	void resize(const example_state_view& state)
	override
	{
		gl.viewport(0, 0, state.width(), state.height());
		erg.set_dimensions(state.width(), state.height());

		aspect = state.aspect();
	}
开发者ID:matus-chochlik,项目名称:oglplu2,代码行数:8,代码来源:008_texgen.cpp


示例12: pointer_scrolling

	void pointer_scrolling(const example_state_view& state)
	override
	{
		scale *= float(std::pow(2,-state.norm_delta_pointer_z()));
		if(scale < min_scale) scale = min_scale;
		if(scale > max_scale) scale = max_scale;

		gl.uniform(erg.scale_loc, scale*aspect, scale);
	}
开发者ID:matus-chochlik,项目名称:oglplu2,代码行数:9,代码来源:008_texgen.cpp


示例13: set_projection

	void set_projection(const example_state_view& state)
	{
		auto projection = 
			matrix_perspective::y(
				right_angle_(),
				state.aspect(),
				0.5f, 50.f
			)*matrix_orbiting_y_up(
				vec3(),
				smooth_lerp(1.5f, 5.0f, cam_orbit),
				turns_(cam_turns),
				smooth_oscillate(radians_(1.5f), cam_pitch)
			);

		gl.use(light_prog);
		gl.uniform(light_prog.projection, projection);
		gl.use(erase_prog);
		gl.uniform(erase_prog.projection, projection);
	}
开发者ID:matus-chochlik,项目名称:oglplu2,代码行数:19,代码来源:028_lighting.cpp


示例14: pointer_motion

	void pointer_motion(const example_state_view& state)
	override
	{
		if(state.pointer_dragging())
		{
			offset_x -= 2*state.norm_delta_pointer_x()*scale;
			offset_y -= 2*state.norm_delta_pointer_y()*scale;

			gl.uniform(prog.offset_loc, offset_x, offset_y);
		}
	}
开发者ID:matus-chochlik,项目名称:oglplu2,代码行数:11,代码来源:014_voronoi.cpp


示例15: prog

    cube_example(
        const example_state_view& state,
        eagine::memory::buffer& temp_buffer
    ): prog()
        , cube(
            temp_buffer,
            shapes::vertex_attrib_kind::position+
            shapes::vertex_attrib_kind::normal+
            shapes::vertex_attrib_kind::box_coord+
            shapes::vertex_attrib_kind::face_coord
        ), cam_orbit(0.5)
        , cam_turns(0.12f)
        , cam_pitch(0.72f)
        , cam_dist_dir(-1)
        , cam_turn_dir(1)
        , cam_elev_dir(1)
    {
        gl.clear_color(0.6f, 0.6f, 0.5f, 0);
        gl.clear_depth(1);
        gl.enable(GL.depth_test);

        set_projection(state);
    }
开发者ID:matus-chochlik,项目名称:oglplu2,代码行数:23,代码来源:010_cube.cpp


示例16: tex

	example_voronoi(const example_params& params)
	 : tex(params)
	 , prog(params)
	 , screen(prog)
	 , ofs_x_dir(1.f)
	 , ofs_y_dir(1.f)
	 , offset_x(-0.5f)
	 , offset_y(0.0f)
	 , scale_dir(1.f)
	 , scale(10.0f)
	 , aspect(1.0f)
	{

		gl.disable(GL.depth_test);
	}
开发者ID:matus-chochlik,项目名称:oglplu2,代码行数:15,代码来源:014_voronoi.cpp


示例17: user_idle

	void user_idle(const example_state_view& state)
	override
	{
		if(state.user_idle_time() > seconds_(1))
		{
			using namespace eagine::math;
			float new_sc = float(smooth_lerp(
				min_scale,
				max_scale,
				value(state.exec_time())*0.4f
			));

			scale = interpolate_linear(new_sc, scale, 0.9f);

			gl.uniform(erg.scale_loc, scale, scale);
		}
	}
开发者ID:matus-chochlik,项目名称:oglplu2,代码行数:17,代码来源:008_texgen.cpp


示例18: user_idle

	void user_idle(const example_state_view& state)
	override
	{
		if(state.user_idle_time() > seconds_(1))
		{
			const float s = value(state.frame_duration())*60;
			const float dest_offset_x = -0.525929f;
			const float dest_offset_y = -0.668547f;
			const float c = 0.02f * s;

			offset_x = c*dest_offset_x + (1-c)*offset_x;
			offset_y = c*dest_offset_y + (1-c)*offset_y; 

			scale *= (1-0.01f*s);
			if(scale < min_scale) scale = min_scale;

			gl.uniform(offset_loc, offset_x, offset_y);
			gl.uniform(scale_loc, scale*aspect, scale);
		}
	}
开发者ID:deranen,项目名称:oglplu2,代码行数:20,代码来源:011_mandelbrot.cpp


示例19: cube

	example_recursive_cube(void)
	 : tex_side(512)
	 , rnd_tex(tex_side)
	 , cube(prog)
	 , current_buf(0)
	 , rad(0.0f)
	{
		gl.clear_color(0.8f, 0.8f, 0.8f, 0.0f);
		gl.clear_depth(1.0f);

		gl.enable(GL.depth_test);
		gl.enable(GL.cull_face);
		gl.cull_face(GL.back);
		gl.front_face(GL.ccw);
	}
开发者ID:matus-chochlik,项目名称:oglplu2,代码行数:15,代码来源:030_recursive_cube.cpp


示例20: render

	void render(const example_state_view& state)
	override
	{
		gl.use(erase_prog);
		gl.disable(GL.depth_test);
		background.use();
		background.draw();

		shp_turns += 0.1f*state.frame_duration().value();

		gl.use(light_prog);
		gl.uniform(
			light_prog.modelview,
			matrix_rotation_x(turns_(shp_turns)/1)*
			matrix_rotation_y(turns_(shp_turns)/2)*
			matrix_rotation_z(turns_(shp_turns)/3)
		);

		gl.clear(GL.depth_buffer_bit);
		gl.enable(GL.depth_test);
		shape.use();
		shape.draw();
	}
开发者ID:matus-chochlik,项目名称:oglplu2,代码行数:23,代码来源:028_lighting.cpp



注:本文中的operations类示例由纯净天空整理自Github/MSDocs等源码及文档管理平台,相关代码片段筛选自各路编程大神贡献的开源项目,源码版权归原作者所有,传播和使用请参考对应项目的License;未经允许,请勿转载。


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