1163 lines
49 KiB
C++
1163 lines
49 KiB
C++
/* _______________ ,-------------------------------------------------------------------.
|
|
//`````````````\\ \ \
|
|
//~~~~~~~~~~~~~~~\\ \ by @ohsqueezy & @sleepin \
|
|
//=================\\ \ [ohsqueezy.itch.io] [sleepin.itch.io] \
|
|
// \\ \ \
|
|
// \\ \ code released under zlib license [git.nugget.fun/nugget/gunkiss] \
|
|
// ☆ GUNKISS ☆ \\ \ \
|
|
//_________________________\\ `-------------------------------------------------------------------'
|
|
|
|
Generate a custom pudding from food product UPC codes and help a pair of rats take over the video game industry, using
|
|
their extraterrestrial ability to turn trash into performance enhancing drug puddings that enable business professionals
|
|
to predict the stock market with supernatural accuracy.
|
|
|
|
*/
|
|
|
|
#include "Pudding.hpp"
|
|
|
|
/* Launch the Pudding instance's mainloop */
|
|
int main()
|
|
{
|
|
Pudding pudding = Pudding();
|
|
pudding.run();
|
|
pudding.quit();
|
|
return 0;
|
|
}
|
|
|
|
/* Initialize a Pudding instance */
|
|
Pudding::Pudding()
|
|
{
|
|
/* subscribe to command events */
|
|
get_delegate().subscribe(&Pudding::respond, this);
|
|
get_delegate().subscribe(&Pudding::respond, this, SDL_MOUSEMOTION);
|
|
get_delegate().subscribe(&Pudding::respond, this, SDL_MOUSEBUTTONDOWN);
|
|
/* initialize a zbar image scanner for reading barcodes of any format */
|
|
image_scanner.set_config(zbar::ZBAR_NONE, zbar::ZBAR_CFG_ENABLE, 1);
|
|
/* set up pudding model */
|
|
nlohmann::json pudding = get_configuration()["pudding"];
|
|
load_pudding_model(pudding["top-radius"], pudding["base-radius"], pudding["ring-vertex-count"], pudding["layer-count"],
|
|
pudding["y-range"][0], pudding["y-range"][1], pudding["gradient-position"]);
|
|
/* loading GL context instead of SDL context for 3D */
|
|
load_gl_context();
|
|
load_tiles();
|
|
load_pads();
|
|
/* Load a pointer cursor from the system library that will be freed automatically */
|
|
poke = std::shared_ptr<SDL_Cursor>(SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_HAND), SDL_FreeCursor);
|
|
}
|
|
|
|
/* Assign vertices, colors and texture UV coordinates to the pudding model */
|
|
void Pudding::load_pudding_model(float top_radius, float base_radius, int ring_vertex_count, int layer_count, float min_y,
|
|
float max_y, float gradient_position)
|
|
{
|
|
size_t ii;
|
|
const glm::vec3 *layer_top_color, *layer_bottom_color;
|
|
const glm::vec2 *start_vertex, *end_vertex;
|
|
float layer_top_y, layer_top_percent, layer_base_y, layer_base_percent, u_step = 1.0f / ring_vertex_count, ring_start_vertex_u;
|
|
std::vector<glm::vec2> layer_top_ring, layer_base_ring;
|
|
layer_top_ring.reserve(ring_vertex_count);
|
|
layer_base_ring.reserve(ring_vertex_count);
|
|
/* y coordinates of each ring of vertices in the pudding */
|
|
const std::map<float, float> y_coords = sb::range_percent_count(max_y, min_y, layer_count + 1);
|
|
/* loop through layers by looking at each layer's top and bottom rings simultaneously */
|
|
for (
|
|
auto layer_top_entry = y_coords.begin(), layer_base_entry = ++y_coords.begin();
|
|
layer_base_entry != y_coords.end();
|
|
layer_top_entry++, layer_base_entry++
|
|
)
|
|
{
|
|
layer_top_y = layer_top_entry->second;
|
|
layer_top_percent = layer_top_entry->first;
|
|
layer_base_y = layer_base_entry->second;
|
|
layer_base_percent = layer_base_entry->first;
|
|
layer_top_ring.clear();
|
|
layer_base_ring.clear();
|
|
sb::points_on_circle(layer_top_ring, ring_vertex_count, layer_top_percent * (base_radius - top_radius) + top_radius);
|
|
sb::points_on_circle(layer_base_ring, ring_vertex_count, layer_base_percent * (base_radius - top_radius) + top_radius);
|
|
/* layers above gradient position are brown, layers below are yellow, and the layer that contains gradient positon
|
|
* is a gradient from brown to yellow */
|
|
if (layer_top_percent <= gradient_position && layer_base_percent > gradient_position)
|
|
{
|
|
layer_top_color = &PUDDING_BROWN;
|
|
layer_bottom_color = &PUDDING_YELLOW;
|
|
}
|
|
else if (layer_top_percent <= gradient_position)
|
|
{
|
|
layer_top_color = &PUDDING_BROWN;
|
|
layer_bottom_color = &PUDDING_BROWN;
|
|
}
|
|
else
|
|
{
|
|
layer_top_color = &PUDDING_YELLOW;
|
|
layer_bottom_color = &PUDDING_YELLOW;
|
|
}
|
|
/* u coordinate will increase toward 1.0f as we go around the ring */
|
|
ring_start_vertex_u = 0.0f;
|
|
for (ii = 0; ii < layer_top_ring.size(); ii++)
|
|
{
|
|
/* triangle that includes top two vertices and first base vertex */
|
|
start_vertex = &layer_top_ring[ii];
|
|
end_vertex = &layer_top_ring[(ii + 1) % layer_top_ring.size()];
|
|
pudding_model["position"]->add(start_vertex->x, layer_top_y, start_vertex->y);
|
|
pudding_model["uv"]->add(ring_start_vertex_u, layer_top_percent);
|
|
pudding_model["position"]->add(end_vertex->x, layer_top_y, end_vertex->y);
|
|
pudding_model["uv"]->add(ring_start_vertex_u + u_step, layer_top_percent);
|
|
pudding_model["color"]->extend(*layer_top_color, 2);
|
|
pudding_model["position"]->add(layer_base_ring[ii].x, layer_base_y, layer_base_ring[ii].y);
|
|
pudding_model["uv"]->add(ring_start_vertex_u, layer_base_percent);
|
|
pudding_model["color"]->add(*layer_bottom_color);
|
|
/* triangle that includes bottom two vertices and second top vertex */
|
|
start_vertex = &layer_base_ring[ii];
|
|
pudding_model["position"]->add(start_vertex->x, layer_base_y, start_vertex->y);
|
|
pudding_model["uv"]->add(ring_start_vertex_u, layer_base_percent);
|
|
pudding_model["color"]->add(*layer_bottom_color);
|
|
pudding_model["position"]->add(end_vertex->x, layer_top_y, end_vertex->y);
|
|
pudding_model["uv"]->add(ring_start_vertex_u + u_step, layer_top_percent);
|
|
pudding_model["color"]->add(*layer_top_color);
|
|
end_vertex = &layer_base_ring[(ii + 1) % layer_base_ring.size()];
|
|
pudding_model["position"]->add(end_vertex->x, layer_base_y, end_vertex->y);
|
|
pudding_model["uv"]->add(ring_start_vertex_u + u_step, layer_base_percent);
|
|
pudding_model["color"]->add(*layer_bottom_color);
|
|
ring_start_vertex_u += u_step;
|
|
}
|
|
}
|
|
pudding_triangle_vertex_count = pudding_model["position"]->count();
|
|
/* process the top and bottom of pudding, filling each face with a triangle fan */
|
|
float y = max_y;
|
|
const glm::vec3* face_color = &PUDDING_BROWN;
|
|
Box texture_box = Box({0, 0}, {1, 1});
|
|
for (float radius : {top_radius, base_radius})
|
|
{
|
|
/* first point in a GL_TRIANGLE_FAN is the center */
|
|
pudding_model["position"]->add(0.0f, y, 0.0f);
|
|
pudding_model["uv"]->add(0.0f, 0.0f);
|
|
layer_top_ring.clear();
|
|
sb::points_on_circle(layer_top_ring, ring_vertex_count, radius);
|
|
/* loop through points on the face */
|
|
for (ii = 0; ii < layer_top_ring.size(); ii++)
|
|
{
|
|
start_vertex = &layer_top_ring[ii];
|
|
/* for GL_TRIANGLE_FAN we just need to add an outer vertex */
|
|
pudding_model["position"]->add(start_vertex->x, y, start_vertex->y);
|
|
pudding_model["uv"]->add(*start_vertex);
|
|
/* connect the ring on the last vertex */
|
|
if (ii == layer_top_ring.size() - 1)
|
|
{
|
|
end_vertex = &layer_top_ring[(ii + 1) % layer_top_ring.size()];
|
|
pudding_model["position"]->add(end_vertex->x, y, end_vertex->y);
|
|
pudding_model["uv"]->add(*end_vertex);
|
|
}
|
|
}
|
|
/* single color for the entire layer_top_ring */
|
|
pudding_model["color"]->extend(*face_color, layer_top_ring.size() + 2);
|
|
y = min_y;
|
|
face_color = &PUDDING_YELLOW;
|
|
}
|
|
pudding_fan_vertex_count = (pudding_model["position"]->count() - pudding_triangle_vertex_count) / 2;
|
|
}
|
|
|
|
/* Create GL context via super class and load vertices, UV data, and shaders */
|
|
void Pudding::load_gl_context()
|
|
{
|
|
super::load_gl_context();
|
|
|
|
/* Create another GL context for loading camera frame textures */
|
|
if ((capture_frame_thread_context = SDL_GL_CreateContext(window)) == nullptr)
|
|
{
|
|
sb::Log::log("could not create capture frame thread context");
|
|
}
|
|
|
|
/* Generate a vertex array object ID, bind it as current (requirement of OpenGL) */
|
|
vao.generate();
|
|
vao.bind();
|
|
|
|
/* Generate ID for the vertex buffer object that will hold all vertex data. Since we're using one buffer, data
|
|
* will be copied in one after the other, offset to after the previous data location. The same buffer offset will
|
|
* be passed to the vertex attributes for each data. */
|
|
vbo.generate();
|
|
vbo.bind();
|
|
|
|
/* Load two shader programs, one for rendering the flat objects, and one for rendering the 3D model. Load and configure
|
|
* the flat shader program first. */
|
|
GLuint vertex_shader = load_shader("src/flat.vert", GL_VERTEX_SHADER);
|
|
GLuint fragment_shader = load_shader("src/flat.frag", GL_FRAGMENT_SHADER);
|
|
flat_program = glCreateProgram();
|
|
glAttachShader(flat_program, vertex_shader);
|
|
glAttachShader(flat_program, fragment_shader);
|
|
Plane::position->bind(0, flat_program, "in_position");
|
|
Plane::uv->bind(1, flat_program, "vertex_uv");
|
|
|
|
/* load, configure and link the 3D world program */
|
|
vertex_shader = load_shader("src/mvp.vert", GL_VERTEX_SHADER);
|
|
fragment_shader = load_shader("src/mvp.frag", GL_FRAGMENT_SHADER);
|
|
mvp_program = glCreateProgram();
|
|
glAttachShader(mvp_program, vertex_shader);
|
|
glAttachShader(mvp_program, fragment_shader);
|
|
pudding_model.attributes("position")->bind(2, mvp_program, "vertex_position");
|
|
pudding_model.attributes("uv")->bind(3, mvp_program, "vertex_uv");
|
|
pudding_model.attributes("color")->bind(4, mvp_program, "vertex_color");
|
|
sb::Log::gl_errors("after loading shaders");
|
|
|
|
/* Fill VBO with attribute data */
|
|
vbo.allocate(background.size() + pudding_model.size(), GL_STATIC_DRAW);
|
|
vbo.add(*Plane::position);
|
|
vbo.add(*Plane::uv);
|
|
vbo.add(*pudding_model.attributes("uv"));
|
|
vbo.add(*pudding_model.attributes("position"));
|
|
vbo.add(*pudding_model.attributes("color"));
|
|
sb::Log::gl_errors("after filling VBO");
|
|
|
|
/* link shaders */
|
|
link_shader(flat_program);
|
|
link_shader(mvp_program);
|
|
sb::Log::gl_errors("after linking");
|
|
|
|
/* store uniform locations after linking */
|
|
uniform["flat"]["texture"] = glGetUniformLocation(flat_program, "base_texture");
|
|
uniform["flat"]["time"] = glGetUniformLocation(flat_program, "time");
|
|
uniform["flat"]["scroll"] = glGetUniformLocation(flat_program, "scroll");
|
|
uniform["flat"]["blend"] = glGetUniformLocation(flat_program, "blend_min_hsv");
|
|
uniform["flat"]["transformation"] = glGetUniformLocation(flat_program, "transformation");
|
|
uniform["mvp"]["mvp"] = glGetUniformLocation(mvp_program, "mvp");
|
|
uniform["mvp"]["time"] = glGetUniformLocation(mvp_program, "time");
|
|
uniform["mvp"]["effect"] = glGetUniformLocation(mvp_program, "effect");
|
|
uniform["mvp"]["uv transformation"] = glGetUniformLocation(mvp_program, "uv_transformation");
|
|
uniform["mvp"]["coordinate bound"] = glGetUniformLocation(mvp_program, "coordinate_bound");
|
|
uniform["mvp"]["pudding texture"] = glGetUniformLocation(mvp_program, "pudding_texture");
|
|
|
|
/* enable alpha rendering */
|
|
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
|
|
glEnable(GL_BLEND);
|
|
sb::Log::gl_errors("after uniform locations");
|
|
}
|
|
|
|
/* Read every jpg in the folder at tile path into a GL texture and associate with the background object. */
|
|
void Pudding::load_tiles()
|
|
{
|
|
for (fs::path path : sb::glob(get_configuration()["resource"]["tile-path"].get<fs::path>() / ".*.jpg"))
|
|
{
|
|
sb::Texture texture {path};
|
|
texture.load();
|
|
background.texture(texture, path);
|
|
}
|
|
}
|
|
|
|
/* Load every png in the button path as a Texture and add to a map. */
|
|
void Pudding::load_pads()
|
|
{
|
|
for (fs::path path : sb::glob(get_configuration()["resource"]["button-path"].get<fs::path>() / ".*.png"))
|
|
{
|
|
labels[path.stem()] = sb::Texture(path);
|
|
labels[path.stem()].load();
|
|
}
|
|
nlohmann::json interface = get_configuration()["interface"];
|
|
camera_button.texture(labels["scan"]);
|
|
camera_button.translation({interface["main-button-single-x"], interface["main-button-y"]});
|
|
camera_button.scale(interface["main-button-scale"], window_box().aspect());
|
|
inventory_button.texture(labels["inventory"]);
|
|
inventory_button.translation({interface["main-button-double-x"], interface["main-button-y"]});
|
|
inventory_button.scale(interface["main-button-scale"], window_box().aspect());
|
|
previous_button.texture(labels["arrow"]);
|
|
previous_button.translation(glm::vec2({-1, 1}) * interface["arrow-button-location"].get<glm::vec2>());
|
|
previous_button.scale(interface["arrow-button-scale"], window_box().aspect());
|
|
next_button.texture(labels["arrow"]);
|
|
next_button.translation(interface["arrow-button-location"]);
|
|
next_button.scale(interface["arrow-button-scale"], window_box().aspect());
|
|
next_button.rotation(glm::radians(180.0f));
|
|
}
|
|
|
|
/* Try to create cv::VideoCapture object using device ID #0. If successful, this will create GL texture IDs and storage
|
|
* for the camera frames, so it must be called after GL context has been created. Two textures will be created, so they
|
|
* can be used as a double buffer.
|
|
*/
|
|
void Pudding::initialize_camera()
|
|
{
|
|
/* initialize an opencv capture device for getting images from an attached camera */
|
|
int device_id = 0;
|
|
capture.open(device_id);
|
|
std::ostringstream message;
|
|
if (capture.isOpened())
|
|
{
|
|
message << "opened and initialized " << capture.get(cv::CAP_PROP_FRAME_WIDTH) << "x" <<
|
|
capture.get(cv::CAP_PROP_FRAME_HEIGHT) << ", " << capture.get(cv::CAP_PROP_FPS) <<
|
|
"fps video capture device ID #" << device_id << " using " << capture.getBackendName();
|
|
/* generate two textures that will store the video frames with the intention of double buffering them
|
|
* for threaded texture loading */
|
|
camera_view.generate({capture.get(cv::CAP_PROP_FRAME_WIDTH), capture.get(cv::CAP_PROP_FRAME_HEIGHT)});
|
|
}
|
|
else
|
|
{
|
|
message << "failed to open video capture device ID #" << device_id;
|
|
}
|
|
sb::Log::log(message);
|
|
}
|
|
|
|
/* Respond to command events */
|
|
void Pudding::respond(SDL_Event& event)
|
|
{
|
|
if (get_delegate().compare(event, "up"))
|
|
{
|
|
item_carousel.next(items);
|
|
}
|
|
else if (get_delegate().compare(event, "right"))
|
|
{
|
|
if (items.size() > 0)
|
|
{
|
|
current_item().next_texture();
|
|
}
|
|
}
|
|
else if (get_delegate().compare(event, "down"))
|
|
{
|
|
item_carousel.previous(items);
|
|
}
|
|
else if (get_delegate().compare(event, "left"))
|
|
{
|
|
if (items.size() > 0)
|
|
{
|
|
current_item().previous_texture();
|
|
}
|
|
}
|
|
else if (get_delegate().compare(event, "toggle-camera"))
|
|
{
|
|
camera_switch.toggle();
|
|
}
|
|
else if (get_delegate().compare(event, "toggle-item"))
|
|
{
|
|
show_item = !show_item;
|
|
}
|
|
/* The effect command switches the active effect to the next in the list, wrapping around at the end */
|
|
else if (get_delegate().compare(event, "effect"))
|
|
{
|
|
effect_id = ++effect_id % EFFECT_COUNT;
|
|
glUseProgram(mvp_program);
|
|
glUniform1i(uniform["mvp"]["effect"], effect_id);
|
|
}
|
|
else if (get_delegate().compare(event, "tile"))
|
|
{
|
|
background.next();
|
|
}
|
|
/* Mouse interface */
|
|
else if (event.type == SDL_MOUSEMOTION || event.type == SDL_MOUSEBUTTONDOWN)
|
|
{
|
|
/* Get the secondary window viewport dimensions in NDC and pixel resolution for sizing the arrow buttons and transforming
|
|
* the mouse coordinates. */
|
|
Box viewport_ndc = sb::Display::ndc;
|
|
/* Drag viewport completely closed to the bottom of the screen */
|
|
viewport_ndc.top(viewport_ndc.bottom(), true);
|
|
nlohmann::json interface = get_configuration()["interface"];
|
|
/* Drag viewport back up the height of the pop-up window */
|
|
viewport_ndc.drag_top(interface["pop-up-viewport-height"]);
|
|
/* Get the viewport in pixel resolution to size the buttons to be square inside the viewport */
|
|
Box viewport_pixel = get_display().ndc_to_pixel(viewport_ndc);
|
|
/* Get mouse coordinates in NDC and pixel resolution in both main window and secondary */
|
|
glm::vec2 mouse_pixel = event.type == SDL_MOUSEBUTTONDOWN ? glm::vec2{event.button.x, event.button.y} :
|
|
glm::vec2{event.motion.x, event.motion.y};
|
|
glm::vec2 mouse_ndc {
|
|
float(mouse_pixel.x) / window_box().width() * 2.0f - 1.0f, (1.0f - float(mouse_pixel.y) / window_box().height()) * 2.0f - 1.0f
|
|
};
|
|
glm::vec2 mouse_viewport_ndc {
|
|
mouse_ndc.x, (1.0f - (float(mouse_pixel.y) - float(viewport_pixel.top())) / viewport_pixel.height()) * 2.0f - 1.0f
|
|
};
|
|
bool over_camera_button = !capture.isOpened() && !item_display_active() && camera_button.collide(mouse_ndc),
|
|
over_inventory_button = items.size() > 0 && !item_display_active() && !capture.isOpened() && inventory_button.collide(mouse_ndc),
|
|
over_close_area = (capture.isOpened() || item_display_active()) && get_display().ndc_subsection(main_viewport).collide(mouse_ndc),
|
|
over_previous_button = item_display_active() && previous_button.collide(mouse_viewport_ndc),
|
|
over_next_button = item_display_active() && next_button.collide(mouse_viewport_ndc);
|
|
/* Check for collisions with anything clickable */
|
|
if (over_camera_button || over_inventory_button || over_close_area || over_previous_button || over_next_button)
|
|
{
|
|
/* Set cursor to pokey finger */
|
|
if (SDL_GetCursor() != poke.get())
|
|
{
|
|
SDL_SetCursor(poke.get());
|
|
}
|
|
/* Respond to a click */
|
|
if (event.type == SDL_MOUSEBUTTONDOWN)
|
|
{
|
|
if (over_camera_button || over_inventory_button || over_close_area)
|
|
{
|
|
/* Reset cursor to default arrow */
|
|
SDL_SetCursor(SDL_GetDefaultCursor());
|
|
if (over_camera_button)
|
|
{
|
|
camera_switch.connect();
|
|
}
|
|
else if (over_inventory_button)
|
|
{
|
|
show_item = true;
|
|
/* Scale buttons according to viewport that is going to open */
|
|
next_button.scale(interface["arrow-button-scale"], viewport_pixel.aspect());
|
|
previous_button.scale(interface["arrow-button-scale"], viewport_pixel.aspect());
|
|
}
|
|
else if (over_close_area)
|
|
{
|
|
camera_switch.disconnect();
|
|
show_item = false;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
/* Handle arrow buttons */
|
|
if (over_next_button)
|
|
{
|
|
if (current_item().at_last())
|
|
{
|
|
item_carousel.next(items);
|
|
current_item().to_first();
|
|
}
|
|
else
|
|
{
|
|
current_item().next_texture();
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if (current_item().at_first())
|
|
{
|
|
item_carousel.previous(items);
|
|
current_item().to_last();
|
|
}
|
|
else
|
|
{
|
|
current_item().previous_texture();
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
else if (SDL_GetCursor() == poke.get())
|
|
{
|
|
SDL_SetCursor(SDL_GetDefaultCursor());
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Build an Item object by submitting the upc parameter to multiple APIs and taking
|
|
* relevant results from each. Result JSON will be saved if saving is enabled in the global
|
|
* configuration
|
|
*/
|
|
void Pudding::add_item(const std::string& upc)
|
|
{
|
|
Item item;
|
|
item.upc(upc);
|
|
if (get_configuration()["api"]["open-food-enabled"])
|
|
{
|
|
incorporate_open_api(item, OPEN_FOOD_API_URL);
|
|
}
|
|
if (get_configuration()["api"]["open-products-enabled"])
|
|
{
|
|
incorporate_open_api(item, OPEN_PRODUCTS_API_URL);
|
|
}
|
|
if (get_configuration()["api"]["nutronix-enabled"])
|
|
{
|
|
incorporate_nutronix_api(item);
|
|
}
|
|
if (get_configuration()["api"]["edamam-enabled"])
|
|
{
|
|
incorporate_edamam_api(item);
|
|
}
|
|
if (get_configuration()["api"]["best-buy-enabled"])
|
|
{
|
|
incorporate_best_buy_api(item);
|
|
}
|
|
if (get_configuration()["api"]["google-books-enabled"])
|
|
{
|
|
incorporate_google_books_api(item);
|
|
}
|
|
if (item.texture_count() > 0)
|
|
{
|
|
items.push_back(item);
|
|
/* Set item index to end so newest item will display. */
|
|
item_carousel.end(items);
|
|
/* Move the camera button away from center to make room for inventory button if this is the first item added. */
|
|
if (items.size() == 1)
|
|
{
|
|
const nlohmann::json& interface = get_configuration()["interface"];
|
|
camera_button.translation({-1.0f * interface["main-button-double-x"].get<float>(), interface["main-button-y"]});
|
|
}
|
|
}
|
|
else
|
|
{
|
|
std::ostringstream message;
|
|
message << "discarding item, no images found for " << upc;
|
|
sb::Log::log(message);
|
|
}
|
|
}
|
|
|
|
/* Look for item upc in the Open Food/Products API and use the result to fill out item properties if found. */
|
|
void Pudding::incorporate_open_api(Item& item, const std::string& api_url)
|
|
{
|
|
std::ostringstream checking_message;
|
|
checking_message << "checking " << api_url;
|
|
sb::Log::log(checking_message);
|
|
nlohmann::json json = json_from_url(api_url + item.upc());
|
|
/* test that should determine if an Open Food API response is not empty */
|
|
if (json.value("status", 0) && json.contains("product"))
|
|
{
|
|
if (json["product"].value("image_url", "") != "")
|
|
{
|
|
std::string image_url = json["product"]["image_url"];
|
|
sb::Texture texture = texture_from_image_url(image_url);
|
|
if (texture.generated())
|
|
{
|
|
item.texture(texture, image_url);
|
|
}
|
|
}
|
|
item.brand_name(json["product"].value("brands", ""));
|
|
item.product_name(json["product"].value("product_name", ""));
|
|
if (api_url == OPEN_FOOD_API_URL)
|
|
{
|
|
save_item_json(json, item, "Open_Food_API");
|
|
}
|
|
else if (api_url == OPEN_PRODUCTS_API_URL)
|
|
{
|
|
save_item_json(json, item, "Open_Products_API");
|
|
}
|
|
}
|
|
else
|
|
{
|
|
std::ostringstream results_message;
|
|
results_message << "no results from " << api_url;
|
|
sb::Log::log(results_message);
|
|
}
|
|
}
|
|
|
|
/* Look for item upc in the Nutronix API, and use the result to fill out item properties if found
|
|
*/
|
|
void Pudding::incorporate_nutronix_api(Item& item)
|
|
{
|
|
sb::Log::log("checking Nutronix API");
|
|
/* Nutronix requires API keys in headers for validation */
|
|
nlohmann::json json = json_from_url(
|
|
NUTRONIX_API_URL + item.upc(), {
|
|
"x-app-id: " + get_configuration()["api"]["nutronix-app-id"].get<std::string>(),
|
|
"x-app-key: " + get_configuration()["api"]["nutronix-app-key"].get<std::string>()
|
|
});
|
|
/* test that should determine if a Nutronix response is not empty */
|
|
if (!(json.contains("message") && json["message"] == NUTRONIX_NOT_FOUND))
|
|
{
|
|
nlohmann::json food = json["foods"][0];
|
|
if (food.contains("photo") && food["photo"].value("thumb", "") != "")
|
|
{
|
|
std::string url = food["photo"]["thumb"];
|
|
sb::Log::log("adding image listed in Nutronix API at " + url);
|
|
sb::Texture texture = texture_from_image_url(url);
|
|
if (texture.generated())
|
|
{
|
|
item.texture(texture, url);
|
|
}
|
|
}
|
|
item.brand_name(food.value("brand_name", ""));
|
|
item.product_name(food.value("food_name", ""));
|
|
save_item_json(json, item, "Nutronix_API");
|
|
}
|
|
else
|
|
{
|
|
sb::Log::log("no results from Nutronix");
|
|
}
|
|
}
|
|
|
|
/* Submit a query to Edamam API and insert relevant results into supplied Item object
|
|
*/
|
|
void Pudding::incorporate_edamam_api(Item& item)
|
|
{
|
|
sb::Log::log("checking Edamam API");
|
|
/* build API url by concatenating relevant values into query string */
|
|
std::stringstream url;
|
|
url << "https://api.edamam.com/api/food-database/v2/parser?upc=" << item.upc() << "&app_id=" <<
|
|
get_configuration()["api"]["edamam-app-id"].get<std::string>() << "&app_key=" <<
|
|
get_configuration()["api"]["edamam-app-key"].get<std::string>();
|
|
nlohmann::json json = json_from_url(url.str());
|
|
/* test that should determine if a Edamam response has food data */
|
|
if (json.contains("hints") && json["hints"][0].contains("food"))
|
|
{
|
|
nlohmann::json food = json["hints"][0]["food"];
|
|
if (food.value("image", "") != "")
|
|
{
|
|
std::string url = food["image"];
|
|
sb::Texture texture = texture_from_image_url(url);
|
|
if (texture.generated())
|
|
{
|
|
item.texture(texture, url);
|
|
}
|
|
item.product_name(food.value("label", ""));
|
|
}
|
|
save_item_json(json, item, "Edamam_API");
|
|
}
|
|
else
|
|
{
|
|
sb::Log::log("no results from Edamam");
|
|
}
|
|
}
|
|
|
|
/* Submit a query to the Best Buy API and insert relevant results into supplied Item object
|
|
*/
|
|
void Pudding::incorporate_best_buy_api(Item& item)
|
|
{
|
|
sb::Log::log("checking Best Buy API");
|
|
/* build API url by concatenating relevant values into query string */
|
|
std::stringstream url;
|
|
url << "https://api.bestbuy.com/v1/products(upc=" << item.upc() << ")?format=json&apiKey=" <<
|
|
get_configuration()["api"]["best-buy-api-key"].get<std::string>();
|
|
nlohmann::json json = json_from_url(url.str());
|
|
/* test that should determine if a Best Buy response has a result */
|
|
if (json.contains("total") && json["total"].get<int>() > 0)
|
|
{
|
|
nlohmann::json product = json["products"][0];
|
|
/* look up image (for games this is box art) and "alternate views image" (for games this is a screen shot) */
|
|
for (std::string key : {"alternateViewsImage", "image"})
|
|
{
|
|
if (product.value(key, "") != "")
|
|
{
|
|
std::string url = product[key];
|
|
sb::Texture texture = texture_from_image_url(url);
|
|
if (texture.generated())
|
|
{
|
|
item.texture(texture, url);
|
|
}
|
|
}
|
|
}
|
|
item.product_name(product.value("name", ""));
|
|
save_item_json(json, item, "Best_Buy_API");
|
|
}
|
|
else
|
|
{
|
|
sb::Log::log("no results from Best Buy");
|
|
}
|
|
}
|
|
|
|
/* Look for item upc in the Google Books API and use the result to fill out item properties if found. */
|
|
void Pudding::incorporate_google_books_api(Item& item)
|
|
{
|
|
sb::Log::log("checking Google Books API");
|
|
nlohmann::json json = json_from_url(GOOGLE_BOOKS_API_URL + item.upc());
|
|
/* test that should determine if a Google Books API response is not empty */
|
|
if (json.value<int>("totalItems", 0) > 0 && json.contains("items") && json["items"][0].contains("volumeInfo"))
|
|
{
|
|
/* book specific section of the JSON */
|
|
json = json["items"][0]["volumeInfo"];
|
|
/* get the image data */
|
|
if (json.contains("imageLinks") && json["imageLinks"].value("thumbnail", "") != "")
|
|
{
|
|
std::string image_url = json["imageLinks"]["thumbnail"];
|
|
sb::Texture texture = texture_from_image_url(image_url);
|
|
if (texture.generated())
|
|
{
|
|
item.texture(texture, image_url);
|
|
}
|
|
}
|
|
if (json.contains("authors"))
|
|
{
|
|
item.brand_name(json["authors"][0]);
|
|
}
|
|
item.product_name(json.value("title", ""));
|
|
save_item_json(json, item, "Google_Books_API");
|
|
}
|
|
else
|
|
{
|
|
sb::Log::log("no results from Google Books API");
|
|
}
|
|
}
|
|
|
|
/* Write submitted JSON to file, creating parent directories if necessary, and using item and
|
|
* api_name to determine file name prefix
|
|
*/
|
|
void Pudding::save_item_json(const nlohmann::json& json, const Item& item, const std::string& api_name) const
|
|
{
|
|
if (get_configuration()["scan"]["json-save"])
|
|
{
|
|
fs::path path = get_configuration()["scan"]["json-save-directory"];
|
|
if (!fs::exists(path))
|
|
{
|
|
fs::create_directories(path);
|
|
}
|
|
std::string prefix = api_name;
|
|
if (item.full_name() != "")
|
|
{
|
|
prefix += "_" + item.full_name();
|
|
}
|
|
else
|
|
{
|
|
prefix += "_Unknown";
|
|
}
|
|
std::replace_if(prefix.begin(), prefix.end(), [](char c) { return !std::isalnum(c); }, '_');
|
|
path /= prefix + "_" + item.upc() + ".json";
|
|
std::ofstream out(path);
|
|
out << std::setw(4) << json << std::endl;
|
|
sb::Log::log("Saved JSON to " + path.string());
|
|
}
|
|
else
|
|
{
|
|
SDL_LogWarn(SDL_LOG_CATEGORY_CUSTOM, "not saving JSON, saving disabled by configuration");
|
|
}
|
|
}
|
|
|
|
/* Download the JSON data at the submitted URL, and return it as a JSON object
|
|
*/
|
|
nlohmann::json Pudding::json_from_url(const std::string& url, const std::vector<std::string>& headers)
|
|
{
|
|
std::vector<std::uint8_t> storage;
|
|
curl_get_bytes(url, storage, headers);
|
|
nlohmann::json json = nlohmann::json::parse(storage);
|
|
std::stringstream json_formatted;
|
|
json_formatted << std::setw(4) << json << std::endl;
|
|
sb::Log::log(json_formatted.str(), sb::Log::DEBUG);
|
|
return json;
|
|
}
|
|
|
|
/* Store the byte buffer from the submitted URL downloaded by cURL into the supplied storage vector
|
|
*/
|
|
void Pudding::curl_get_bytes(const std::string& url, std::vector<std::uint8_t>& storage, const std::vector<std::string>& headers) const
|
|
{
|
|
CURL *curl;
|
|
CURLcode result;
|
|
result = curl_global_init(CURL_GLOBAL_DEFAULT);
|
|
if (result != CURLE_OK)
|
|
{
|
|
std::cout << "curl initialization failed " << curl_easy_strerror(result) << std::endl;
|
|
}
|
|
else
|
|
{
|
|
curl = curl_easy_init();
|
|
if (curl)
|
|
{
|
|
curl_easy_setopt(curl, CURLOPT_URL, url.c_str());
|
|
curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, Pudding::curl_write_response);
|
|
std::vector<std::uint8_t> food_barcode_response;
|
|
curl_easy_setopt(curl, CURLOPT_WRITEDATA, &storage);
|
|
curl_easy_setopt(curl, CURLOPT_USERAGENT, get_configuration()["api"]["user-agent"].get<std::string>().c_str());
|
|
struct curl_slist* list = nullptr;
|
|
if (headers.size() > 0)
|
|
{
|
|
for (const std::string& header : headers)
|
|
{
|
|
list = curl_slist_append(list, header.c_str());
|
|
}
|
|
}
|
|
curl_easy_setopt(curl, CURLOPT_HTTPHEADER, list);
|
|
result = curl_easy_perform(curl);
|
|
curl_slist_free_all(list);
|
|
if (result != CURLE_OK)
|
|
{
|
|
std::cout << "curl request failed " << curl_easy_strerror(result) << std::endl;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
std::cout << "curl initialization failed" << std::endl;
|
|
}
|
|
curl_easy_cleanup(curl);
|
|
}
|
|
curl_global_cleanup();
|
|
}
|
|
|
|
/* This callback will be called by cURL when it has a response char buffer. The chars will be inserted into the storage
|
|
* vector pointed to by the storage parameter.
|
|
*/
|
|
size_t Pudding::curl_write_response(std::uint8_t* buffer, size_t size, size_t count, std::vector<std::uint8_t>* storage)
|
|
{
|
|
size_t total_size = size * count;
|
|
storage->insert(storage->end(), buffer, buffer + total_size);
|
|
return total_size;
|
|
}
|
|
|
|
/* Allocate storage for a texture, copy the cURL response data into the storage, and return the ID that corresponds to the GL texture
|
|
*/
|
|
sb::Texture Pudding::texture_from_image_url(const std::string& url) const
|
|
{
|
|
/* this texture will be returned whether we load pixels into it or not */
|
|
sb::Texture texture;
|
|
sb::Log::log("looking up image at " + url);
|
|
std::vector<std::uint8_t> storage;
|
|
curl_get_bytes(url, storage);
|
|
if (!storage.empty())
|
|
{
|
|
sb::Log::log("received image data", sb::Log::DEBUG);
|
|
/* get a Texture by passing the bytes through an RW ops which will enable the Texture object to load a Surface */
|
|
SDL_RWops* rw = SDL_RWFromConstMem(storage.data(), storage.size());
|
|
texture.load(rw);
|
|
SDL_RWclose(rw);
|
|
}
|
|
else
|
|
{
|
|
SDL_LogWarn(SDL_LOG_CATEGORY_CUSTOM, "image url returned no data");
|
|
}
|
|
return texture;
|
|
}
|
|
|
|
/* Call GL's delete texture function, and print a debug statement for testing. This is defined as a static member
|
|
* function and uses the SDL logging function instead of the inherited logging functions from Node since the object
|
|
* may not be allocated at destruction time (?)
|
|
*/
|
|
void Pudding::destroy_texture(GLuint* texture_id)
|
|
{
|
|
/* not sure why SDL_Log works here but SDL_LogDebug and SDL_LogInfo don't */
|
|
std::ostringstream message;
|
|
message << "destroying texture ID " << *texture_id;
|
|
sb::Log::log(message);
|
|
glDeleteTextures(1, texture_id);
|
|
}
|
|
|
|
/* Return the item currently selected in the inventory */
|
|
Item& Pudding::current_item()
|
|
{
|
|
try
|
|
{
|
|
return *item_carousel.current(items);
|
|
}
|
|
catch (const std::out_of_range& exception)
|
|
{
|
|
std::ostringstream message;
|
|
message << "Out of range exception: " << exception.what() << " (Attempting to retrieve an item from empty inventory)";
|
|
sb::Log::log(message);
|
|
}
|
|
}
|
|
|
|
/* Returns true if item display is toggled on and there is at least one item to display */
|
|
bool Pudding::item_display_active() const
|
|
{
|
|
return show_item && items.size() > 0;
|
|
}
|
|
|
|
/* Read pixels from the camera into a GL texture. This function is meant to be launched in a separate thread,
|
|
* so it will use its own GL context to load the pixels into either the front or back texture buffer, depending
|
|
* on which is not currently in use */
|
|
int Pudding::capture_frame(void* game)
|
|
{
|
|
time_it("total thread")([&]{
|
|
Pudding* pudding = reinterpret_cast<Pudding*>(game);
|
|
/* Make the thread context the current context (not sure what that means, but it doesn't seem to conflict
|
|
* with the main rendering context) */
|
|
if (time_it<int>("make current")([&] { return SDL_GL_MakeCurrent(pudding->window, pudding->capture_frame_thread_context); }) < 0)
|
|
{
|
|
sb::Log::log("error making thread context current");
|
|
}
|
|
else
|
|
{
|
|
if (pudding->capture.isOpened())
|
|
{
|
|
cv::Mat frame;
|
|
time_it("read frame")([&]{
|
|
pudding->capture.read(frame);
|
|
});
|
|
if (!frame.empty())
|
|
{
|
|
time_it("flip")([&]{
|
|
/* rotate the opencv matrix 180 to work with opengl coords */
|
|
cv::flip(frame, frame, -1);
|
|
});
|
|
time_it("load texture")([&]{
|
|
/* use whichever texture ID is not being used by the main rendering thread */
|
|
sb::Texture& texture = pudding->camera_view.free();
|
|
/* bind texture for accepting pixel data */
|
|
texture.bind();
|
|
/* fill texture memory with last frame's pixels */
|
|
texture.load(frame.ptr(), {frame.cols, frame.rows}, GL_BGR, GL_UNSIGNED_BYTE);
|
|
});
|
|
pudding->camera_view.swap();
|
|
if (pudding->get_configuration()["scan"]["enabled"])
|
|
{
|
|
time_it("gray")([&]{
|
|
/* convert to gray and scan with zbar */
|
|
cv::cvtColor(frame, frame, cv::COLOR_BGR2GRAY);
|
|
});
|
|
zbar::Image query_image(frame.cols, frame.rows, "Y800", static_cast<void*>(frame.data), frame.cols * frame.rows);
|
|
int result = pudding->image_scanner.scan(query_image);
|
|
if (result > 0)
|
|
{
|
|
time_it("barcode lookup")([&] {
|
|
for (zbar::Image::SymbolIterator symbol = query_image.symbol_begin(); symbol != query_image.symbol_end(); ++symbol)
|
|
{
|
|
std::ostringstream message;
|
|
message << "camera scanned " << symbol->get_type_name() << " symbol " << symbol->get_data();
|
|
sb::Log::log(message);
|
|
pudding->current_camera_barcode = symbol->get_data();
|
|
pudding->current_barcode = pudding->current_camera_barcode;
|
|
}
|
|
});
|
|
}
|
|
query_image.set_data(nullptr, 0);
|
|
}
|
|
}
|
|
frame.release();
|
|
}
|
|
SDL_GL_MakeCurrent(pudding->window, nullptr);
|
|
sb::Log::gl_errors("in capture thread, after capturing frame");
|
|
}
|
|
pudding->reading_capture_frame = false;
|
|
// using namespace std::chrono_literals;
|
|
// std::this_thread::sleep_for(2s);
|
|
});
|
|
return 0;
|
|
}
|
|
|
|
/* Update parameters and draw the screen */
|
|
void Pudding::update()
|
|
{
|
|
/* number of seconds we've been running for */
|
|
float time_seconds = SDL_GetTicks() / 1000.0f;
|
|
{
|
|
/* launch the camera capture thread if it is not currently running */
|
|
if (capture.isOpened() && !reading_capture_frame)
|
|
{
|
|
SDL_Thread* capture_thread = SDL_CreateThread(Pudding::capture_frame, "capture frame", reinterpret_cast<void*>(this));
|
|
if (capture_thread == nullptr)
|
|
{
|
|
sb::Log::log("could not create capture thread");
|
|
}
|
|
else
|
|
{
|
|
reading_capture_frame = true;
|
|
SDL_WaitThread(capture_thread, nullptr);
|
|
}
|
|
}
|
|
}
|
|
sb::Log::gl_errors("in main thread, after capturing frame");
|
|
/* if the config is set to refresh automatically, there may be a new barcode available */
|
|
if (current_config_barcode != get_configuration()["scan"]["barcode"])
|
|
{
|
|
current_config_barcode = get_configuration()["scan"]["barcode"];
|
|
current_barcode = current_config_barcode;
|
|
std::ostringstream message;
|
|
message << "read new barcode from config " << current_barcode;
|
|
sb::Log::log(message);
|
|
}
|
|
/* viewport box will be used to tell GL where to draw */
|
|
viewport = window_box(true);
|
|
/* shrink viewport if item texture or camera will be displayed */
|
|
if (item_display_active() || capture.isOpened())
|
|
{
|
|
viewport.drag_bottom(0.5f * get_configuration()["interface"]["pop-up-viewport-height"].get<float>() * viewport.height());
|
|
}
|
|
/* Save the main viewport dimensions */
|
|
main_viewport = viewport;
|
|
glViewport(viewport);
|
|
glDisable(GL_DEPTH_TEST);
|
|
glClearColor(0, 0, 0, 1);
|
|
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
|
|
/* switch to flat shader for background */
|
|
glUseProgram(flat_program);
|
|
/* flat shader uniforms for BG: time, texture ID, disabled HSV blend, scroll on */
|
|
glActiveTexture(GL_TEXTURE0);
|
|
glUniform1f(uniform["flat"]["time"], time_seconds);
|
|
glUniform1i(uniform["flat"]["texture"], 0);
|
|
glUniform3f(uniform["flat"]["blend"], 0.0f, 0.0f, 1.0f);
|
|
glUniform1i(uniform["flat"]["scroll"], true);
|
|
glUniformMatrix4fv(uniform["flat"]["transformation"], 1, GL_FALSE, &glm::mat4(1)[0][0]);
|
|
/* disable pudding attributes and enable background attributes */
|
|
pudding_model.disable();
|
|
background.enable();
|
|
background.current().bind();
|
|
/* draws bg vertices and texture */
|
|
glDrawArrays(GL_TRIANGLES, 0, background.attributes("position")->count());
|
|
/* turn off scrolling */
|
|
glUniform1i(uniform["flat"]["scroll"], false);
|
|
sb::Log::gl_errors("after background, before pudding");
|
|
/* draw pudding model using MVP shader */
|
|
glUseProgram(mvp_program);
|
|
/* calculate the transformation matrix for displaying pudding in viewport */
|
|
model = glm::rotate(model, weight(get_configuration()["pudding"]["rotation-speed"].get<float>()), Y_UNIT_NORMAL_3D);
|
|
projection = glm::perspective(
|
|
glm::radians(40.0f * 1 / viewport.aspect()), viewport.aspect(), 0.1f, 100.0f);
|
|
mvp = projection * VIEW_MATRIX * model;
|
|
/* uniforms */
|
|
glUniform1f(uniform["mvp"]["time"], time_seconds);
|
|
glUniformMatrix4fv(uniform["mvp"]["mvp"], 1, GL_FALSE, &mvp[0][0]);
|
|
/* disable bg attributes and enable pudding attributes */
|
|
background.disable();
|
|
pudding_model.attributes("position")->enable();
|
|
if (items.size() == 0)
|
|
{
|
|
glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
|
|
// pudding_model.attributes("color")->enable();
|
|
}
|
|
else
|
|
{
|
|
glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
|
|
// pudding_model.attributes("color")->enable();
|
|
pudding_model.attributes("uv")->enable();
|
|
glUniform1i(uniform["mvp"]["pudding texture"], 0);
|
|
glActiveTexture(GL_TEXTURE0);
|
|
current_item().current_texture().bind();
|
|
}
|
|
/* draw pudding model */
|
|
glEnable(GL_DEPTH_TEST);
|
|
/* draw the sides of the pudding */
|
|
glDrawArrays(GL_TRIANGLES, 0, pudding_triangle_vertex_count);
|
|
sb::Log::gl_errors("after pudding sides, before pudding top/bottom");
|
|
/* enable squircling and draw the top and bottom of pudding */
|
|
glUniform1i(uniform["mvp"]["uv transformation"], UV_SQUIRCLE);
|
|
glUniform1f(uniform["mvp"]["coordinate bound"], get_configuration()["pudding"]["top-radius"]);
|
|
glDrawArrays(GL_TRIANGLE_FAN, pudding_triangle_vertex_count, pudding_fan_vertex_count);
|
|
glUniform1f(uniform["mvp"]["coordinate bound"], get_configuration()["pudding"]["base-radius"]);
|
|
glDrawArrays(GL_TRIANGLE_FAN, pudding_triangle_vertex_count + pudding_fan_vertex_count, pudding_fan_vertex_count);
|
|
/* disable squircling for all other drawing */
|
|
glUniform1i(uniform["mvp"]["uv transformation"], UV_NONE);
|
|
/* regular fill mode enabled for all other drawing */
|
|
glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
|
|
sb::Log::gl_errors("after pudding, before item or camera view");
|
|
/* only do more drawing if items are downloaded or camera is enabled */
|
|
if (item_display_active() || capture.isOpened())
|
|
{
|
|
/* switch to flat shader for item and camera */
|
|
glUseProgram(flat_program);
|
|
pudding_model.disable();
|
|
glDisable(GL_DEPTH_TEST);
|
|
/* just need to set these once since we're drawing one texture per viewport */
|
|
glUniform1i(uniform["flat"]["texture"], 0);
|
|
glActiveTexture(GL_TEXTURE0);
|
|
/* move viewport to the bottom of screen */
|
|
viewport.top(viewport.bottom(), true);
|
|
viewport.bottom(window_box(true).bottom(), true);
|
|
/* reset blend to display the original texture colors */
|
|
glUniform3f(uniform["flat"]["blend"], 0.0f, 0.0f, 1.0f);
|
|
/* draw the current item image if we're supposed to */
|
|
if (item_display_active())
|
|
{
|
|
/* shrink viewport to half size if camera will also be displayed */
|
|
if (capture.isOpened())
|
|
{
|
|
viewport.left(viewport.cx(), true);
|
|
}
|
|
glViewport(viewport);
|
|
current_item().current_texture().bind();
|
|
current_item().view().enable();
|
|
/* draws rectangle vertices and rectangle texture using UV coords */
|
|
glDrawArrays(GL_TRIANGLES, 0, current_item().view().attributes("position")->count());
|
|
current_item().view().disable();
|
|
/* Draw arrows for cycling through items in inventory */
|
|
if (items.size() > 1 || current_item().texture_count() > 1)
|
|
{
|
|
next_button.draw(uniform["flat"]["transformation"]);
|
|
previous_button.draw(uniform["flat"]["transformation"]);
|
|
}
|
|
}
|
|
/* draw the camera if the camera has been opened */
|
|
if (capture.isOpened())
|
|
{
|
|
viewport.left(window_box(true).left());
|
|
glViewport(viewport);
|
|
/* bind texture for drawing */
|
|
glUniformMatrix4fv(uniform["flat"]["transformation"], 1, GL_FALSE, &camera_view.transformation()[0][0]);
|
|
camera_view.current().bind();
|
|
camera_view.enable();
|
|
/* draws rectangle vertices and rectangle texture using UV coords */
|
|
glDrawArrays(GL_TRIANGLES, 0, camera_view.attributes("position")->count());
|
|
}
|
|
}
|
|
else
|
|
{
|
|
/* Draw the camera button if neither the camera or inventory is displayed */
|
|
glUseProgram(flat_program);
|
|
camera_button.draw(uniform["flat"]["transformation"]);
|
|
/* And the inventory button if there are items scanned into the inventory */
|
|
if (items.size() > 0)
|
|
{
|
|
inventory_button.draw(uniform["flat"]["transformation"]);
|
|
}
|
|
}
|
|
SDL_GL_SwapWindow(get_window());
|
|
sb::Log::gl_errors("at end of update");
|
|
/* add a new item if a new barcode was scanned or entered */
|
|
if (current_barcode != previous_barcode)
|
|
{
|
|
add_item(current_barcode);
|
|
previous_barcode = current_barcode;
|
|
}
|
|
}
|
|
|
|
/* Construct a Pad using a texture, a translation, a scale, and a callback function. A Pad is a Plane which can be clicked
|
|
* to launch an arbitrary user function. It can be sized and placed by setting the translation and scale values. The translation
|
|
* is relative to (0.0, 0.0), and the scale is relative to the Plane, which has opposite corners at (-1.0, -1.0) and (1.0, 1.0).
|
|
* The texture is the graphic that displays in the Pad location. The callback must be a function that doesn't return a value or
|
|
* accept any arguments. */
|
|
Pad::Pad(sb::Texture texture, glm::vec2 translation, float scale, float ratio, std::function<void()> on_connect, float rotation)
|
|
{
|
|
this->texture(texture);
|
|
this->translation(translation);
|
|
this->scale(scale, ratio);
|
|
if (rotation)
|
|
{
|
|
this->rotation(rotation);
|
|
}
|
|
this->on_connect(on_connect);
|
|
collision_box.invert_y(true);
|
|
}
|
|
|
|
/* Set angle in radians the pad will be rotated. The pad will be rotated around its center. The collision box will not
|
|
* change, so the box will not contain the entire pad if the angle is not a multiple of pi/2. The pad's transformation
|
|
* matrix will automatically be set to incorporate this rotation transformation. */
|
|
void Pad::rotation(float angle)
|
|
{
|
|
rotation_angle = angle;
|
|
transform();
|
|
}
|
|
|
|
/* Set the scale using a factor and ratio that will transform the pad in the X and Y dimensions. The ratio will determine
|
|
* how much each axis is scaled. If the ratio is above one, the X-axis's scale will be divided by the ratio. If the ratio
|
|
* is below one, the Y-axis's scale will be multiplied by the aspect ratio. If the aspect ratio of the window is given,
|
|
* this will force the pad to display as a square, and the ratio will be relative to the shorter axis. The collision box
|
|
* will be scaled by the same factors. The pad's transformation matrix will automatically be set to incorporate this
|
|
* scale transformation. */
|
|
void Pad::scale(float factor, float ratio)
|
|
{
|
|
scale_factor = factor;
|
|
scale_ratio = ratio;
|
|
transform();
|
|
}
|
|
|
|
/* Set a translation for the pad object in the X and Y dimension using a 2d vector. The collision box will be moved by the
|
|
* same translation. The pad's transformation matrix will automatically be set to incorporate this translation
|
|
* transformation. */
|
|
void Pad::translation(const glm::vec2& translation)
|
|
{
|
|
translation_vector = translation;
|
|
transform();
|
|
}
|
|
|
|
/* Set the transformation matrix for the pad object by applying the scale to the translation and the rotation to the
|
|
* resulting matrix, meaning the transformations will be applied to the pad in the order of: translate, scale, and
|
|
* rotate. The collision box will be scaled and moved to fit around the position coordinates that would result from
|
|
* applying this transformation to the position coordinates. */
|
|
void Pad::transform()
|
|
{
|
|
glm::vec3 scale { scale_factor, scale_factor, 1.0f };
|
|
if (scale_ratio > 1.0f)
|
|
{
|
|
scale.x /= scale_ratio;
|
|
}
|
|
else if (scale_ratio < 1.0f)
|
|
{
|
|
scale.y *= scale_ratio;
|
|
}
|
|
collision_box.size(2.0f * glm::vec2{scale.x, scale.y}, true);
|
|
collision_box.center(translation_vector);
|
|
Model::transformation(glm::translate(glm::vec3{translation_vector.x, translation_vector.y, 0.0f}) *
|
|
glm::scale(scale) * glm::rotate(rotation_angle, ROTATION_AXIS));
|
|
}
|
|
|
|
/* Set the function that will run when a pad object is clicked. */
|
|
void Pad::on_connect(std::function<void()> on_connect)
|
|
{
|
|
connection.on_connect(on_connect);
|
|
}
|
|
|
|
/* Returns true if the point at position collides with the pad's collision box. */
|
|
bool Pad::collide(const glm::vec2& position) const
|
|
{
|
|
return collision_box.collide(position);
|
|
}
|
|
|
|
void Pad::draw(GLuint uniform_id)
|
|
{
|
|
glUniformMatrix4fv(uniform_id, 1, GL_FALSE, &transformation()[0][0]);
|
|
texture().bind();
|
|
enable();
|
|
glDrawArrays(GL_TRIANGLES, 0, attributes("position")->count());
|
|
disable();
|
|
}
|
|
|
|
void glViewport(Box box)
|
|
{
|
|
glViewport(box.left(), box.bottom(), box.width(), box.height());
|
|
}
|