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editor.hpp
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#pragma once
#include <vector>
#include <sstream>
#include <algorithm>
#include <unordered_set>
#include <nlohmann/json.hpp>
#include <fstream>
#include <imgui.h>
#include <glm/glm.hpp>
#include <glm/ext.hpp>
#include "node.hpp"
#include "link.hpp"
#include "graph.hpp"
#include "object.hpp"
#include "shader.hpp"
#include "framebuffer.hpp"
template<class T>
T clamp(T x, T a, T b)
{
return std::min(b, std::max(x, a));
}
static float current_time_seconds = 0.f;
static bool emulate_three_button_mouse = false;
class NodeEditor
{
public:
NodeEditor()
: graph_(), nodes_(), root_node_id_(-1),
minimap_location_(ImNodesMiniMapLocation_BottomRight)
{
setupSphere(1.0f, 16, 16);
frameBuffer.InitFrameBuffer(800,600);
frameBUfferSphere.InitFrameBuffer(800, 600);
mainShader.loadShader(shaderVertex, TypeShader::VERTEX_SHADER);
mainShader.loadShader(shaderFragment, TypeShader::FRAGMENT_SHADER);
mainShader.createShaderProgram();
// first viewer is cube.
frameBuffer.Bind();
render_to_framebuffer_cube(glm::vec3(1.0f, 0.5f, 0.31f));
frameBuffer.Unbind();
}
private:
unsigned int fbo; // Framebuffer Object
unsigned int texture;
unsigned int rbo, ebo;
unsigned int cubeVAO, cubeVBO = 0;
unsigned int sphereVAO, sphereVBO = 0;
Shader mainShader;
FrameBuffer frameBuffer;
FrameBuffer frameBUfferSphere;
int m_latitudeSegments = 0;
int m_longitudeSegments = 0;
float rotationY = 0;
float rotationX = 0;
public:
uint32_t getTicks() {
static const auto startTime = std::chrono::steady_clock::now();
auto now = std::chrono::steady_clock::now();
auto elapsed = std::chrono::duration_cast<std::chrono::milliseconds>(now - startTime).count();
return static_cast<uint32_t>(elapsed);
}
void renderCube(const glm::vec3& color, const glm::mat4& projection, const glm::mat4& view, const glm::mat4& model) {
// if(cubeVAO == 0) {
glGenVertexArrays(1, &cubeVAO);
glGenBuffers(1, &cubeVBO);
glBindBuffer(GL_ARRAY_BUFFER, cubeVBO);
glBufferData(GL_ARRAY_BUFFER, sizeof(CubeVertices), CubeVertices, GL_STATIC_DRAW);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, ebo);
glBufferData(GL_ELEMENT_ARRAY_BUFFER, sizeof(CubeIndices), CubeIndices, GL_STATIC_DRAW);
glBindVertexArray(cubeVAO);
glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 8 * sizeof(float), (void*)0);
glEnableVertexAttribArray(0);
glVertexAttribPointer(1, 3, GL_FLOAT, GL_FALSE, 8 * sizeof(float), (void*)(3 * sizeof(float)));
glEnableVertexAttribArray(1);
glVertexAttribPointer(2, 2, GL_FLOAT, GL_FALSE, 8 * sizeof(float), (void*)(6 * sizeof(float)));
glEnableVertexAttribArray(2);
glBindBuffer(GL_ARRAY_BUFFER, 0);
glBindVertexArray(0);
// }
mainShader.useShaderProgram();
glUniformMatrix4fv(glGetUniformLocation(mainShader.getShaderProgram(), "projection"), 1, GL_FALSE, &projection[0][0]);
glUniformMatrix4fv(glGetUniformLocation(mainShader.getShaderProgram(), "view"), 1, GL_FALSE, &view[0][0]);
glUniformMatrix4fv(glGetUniformLocation(mainShader.getShaderProgram(), "model"), 1, GL_FALSE, &model[0][0]);
glUniform3fv(glGetUniformLocation(mainShader.getShaderProgram(), "color"), 1, &color[0]);
glBindVertexArray(cubeVAO);
glDrawArrays(GL_TRIANGLES, 0, 36);
glBindVertexArray(0);
}
void setupSphere(float radius, int latitudeSegments, int longitudeSegments) {
auto vertices = generateSphere(radius, latitudeSegments, longitudeSegments);
m_latitudeSegments = latitudeSegments;
m_longitudeSegments = longitudeSegments;
glGenVertexArrays(1, &sphereVAO);
glGenBuffers(1, &sphereVBO);
glBindVertexArray(sphereVAO);
glBindBuffer(GL_ARRAY_BUFFER, sphereVBO);
glBufferData(GL_ARRAY_BUFFER, vertices.size() * sizeof(Vertex), &vertices[0], GL_STATIC_DRAW);
glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, sizeof(Vertex), (void*)0); // Pozice
glEnableVertexAttribArray(0);
glVertexAttribPointer(1, 3, GL_FLOAT, GL_FALSE, sizeof(Vertex), (void*)(3 * sizeof(float))); // Normály
glEnableVertexAttribArray(1);
glVertexAttribPointer(2, 2, GL_FLOAT, GL_FALSE, sizeof(Vertex), (void*)(6 * sizeof(float))); // UV
glEnableVertexAttribArray(2);
glBindVertexArray(0);
}
void renderSphere(const glm::mat4& projection, const glm::mat4& view, const glm::mat4& model, const glm::vec3& color) {
mainShader.useShaderProgram();
glUniformMatrix4fv(glGetUniformLocation(mainShader.getShaderProgram(), "projection"), 1, GL_FALSE, &projection[0][0]);
glUniformMatrix4fv(glGetUniformLocation(mainShader.getShaderProgram(), "view"), 1, GL_FALSE, &view[0][0]);
glUniformMatrix4fv(glGetUniformLocation(mainShader.getShaderProgram(), "model"), 1, GL_FALSE, &model[0][0]);
glUniform3fv(glGetUniformLocation(mainShader.getShaderProgram(), "color"), 1, &color[0]);
glBindVertexArray(sphereVAO);
glDrawArrays(GL_TRIANGLE_STRIP, 0, (m_latitudeSegments + 1) * (m_longitudeSegments + 1));
glBindVertexArray(0);
}
void render_to_framebuffer_cube(glm::vec3 color)
{
glViewport(0, 0, 800, 600);
glEnable(GL_DEPTH_TEST);
glClearColor(0.1f, 0.1f, 0.1f, 1.0f);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glm::mat4 projection = glm::perspective(glm::radians(45.0f), 800.0f / 600.0f, 0.1f, 100.0f);
glm::mat4 view = glm::lookAt(glm::vec3(3.0f, 3.0f, 3.0f), glm::vec3(0.0f, 0.0f, 0.0f), glm::vec3(0.0f, 1.0f, 0.0f));
glm::mat4 model = glm::mat4(1.0f);
model = glm::rotate(model, rotationY, glm::vec3(0.0f, 1.0f, 0.0f));
model = glm::rotate(model, rotationX, glm::vec3(1.0f, 0.0f, 0.0f));
renderCube(color, projection, view, model);
}
void render_to_framebuffer_sphere(glm::vec3 color) {
glViewport(0, 0, 800, 600);
glEnable(GL_DEPTH_TEST);
glClearColor(0.1f, 0.1f, 0.1f, 1.0f);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glm::mat4 projection = glm::perspective(glm::radians(45.0f), 800.0f / 600.0f, 0.1f, 100.0f);
glm::mat4 view = glm::lookAt(glm::vec3(3.0f, 3.0f, 3.0f), glm::vec3(0.0f, 0.0f, 0.0f), glm::vec3(0.0f, 1.0f, 0.0f));
glm::mat4 model = glm::mat4(1.0f);
renderSphere(projection, view, model, color);
}
void handleMouseInput()
{
if (ImGui::IsMouseDragging(ImGuiMouseButton_Right))
{
ImVec2 mouseDelta = ImGui::GetIO().MouseDelta;
rotationY += mouseDelta.x * 0.005f;
rotationX += mouseDelta.y * 0.005f;
rotationX = glm::clamp(rotationX, -glm::half_pi<float>(), glm::half_pi<float>());
}
}
void save_project(const std::string& filename)
{
nlohmann::json j;
// Uložení uzlů
j["nodes"] = nlohmann::json::array();
for (const auto& node : nodes_)
{
nlohmann::json node_json;
node_json["id"] = node.id;
node_json["type"] = static_cast<int>(node.type);
switch (node.type)
{
case UiNodeType::add:
node_json["lhs"] = node.ui.add.lhs;
node_json["rhs"] = node.ui.add.rhs;
break;
case UiNodeType::multiply:
node_json["lhs"] = node.ui.multiply.lhs;
node_json["rhs"] = node.ui.multiply.rhs;
break;
case UiNodeType::power:
node_json["lhs"] = node.ui.power.lhs;
node_json["rhs"] = node.ui.power.rhs;
break;
case UiNodeType::output:
node_json["r"] = node.ui.output.r;
node_json["g"] = node.ui.output.g;
node_json["b"] = node.ui.output.b;
break;
case UiNodeType::sine:
node_json["input"] = node.ui.sine.input;
break;
case UiNodeType::cubeviewport:
node_json["input"] = node.ui.cubeviewport.input;
break;
case UiNodeType::sphereviewport:
node_json["input"] = node.ui.sphereviewport.input;
break;
default:
break;
}
j["nodes"].push_back(node_json);
}
j["edges"] = nlohmann::json ::array();
for (const auto& edge : graph_.edges())
{
nlohmann::json edge_json;
edge_json["id"] = edge.id;
edge_json["from"] = edge.from;
edge_json["to"] = edge.to;
j["edges"].push_back(edge_json);
}
std::ofstream file(filename);
if (file.is_open())
{
file << j.dump(4);
file.close();
std::cout << "Project save to: " << filename << std::endl;
}
else
{
std::cerr << "save file failed!" << std::endl;
}
}
void load_project(const std::string& filename)
{
std::ifstream file(filename);
if (!file.is_open())
{
std::cerr << "read file failed!" << std::endl;
return;
}
nlohmann::json j;
file >> j;
nodes_.clear();
graph_ = Graph<Node>();
for (const auto& node_json : j["nodes"])
{
UiNode ui_node;
ui_node.id = node_json["id"];
ui_node.type = static_cast<UiNodeType>(node_json["type"]);
switch (ui_node.type)
{
case UiNodeType::add:
ui_node.ui.add.lhs = node_json["lhs"];
ui_node.ui.add.rhs = node_json["rhs"];
break;
case UiNodeType::multiply:
ui_node.ui.multiply.lhs = node_json["lhs"];
ui_node.ui.multiply.rhs = node_json["rhs"];
break;
case UiNodeType::power:
ui_node.ui.power.lhs = node_json["lhs"];
ui_node.ui.power.rhs = node_json["rhs"];
break;
case UiNodeType::output:
ui_node.ui.output.r = node_json["r"];
ui_node.ui.output.g = node_json["g"];
ui_node.ui.output.b = node_json["b"];
break;
case UiNodeType::sine:
ui_node.ui.sine.input = node_json["input"];
break;
case UiNodeType::cubeviewport:
ui_node.ui.cubeviewport.input = node_json["input"];
break;
case UiNodeType::sphereviewport:
ui_node.ui.sphereviewport.input = node_json["input"];
break;
default:
break;
}
nodes_.push_back(ui_node);
}
for (const auto& edge_json : j["edges"])
{
int from = edge_json["from"];
int to = edge_json["to"];
if (!graph_.node_exists(from) || !graph_.node_exists(to))
{
std::cerr << "Error: Invalid edge. Missing nodes: " << from << " or " << to << std::endl;
continue; // Přeskočte chybnou hranu
}
graph_.insert_edge(from, to);
}
std::cout << "Project save to file!" << filename << std::endl;
}
void show()
{
handleMouseInput();
// Update timer context
current_time_seconds = 0.001f * getTicks();
auto flags = ImGuiWindowFlags_MenuBar;
// The node editor window
ImGui::Begin("color node editor", NULL, flags);
if (ImGui::BeginMenuBar())
{
if (ImGui::BeginMenu("File"))
{
if (ImGui::MenuItem("Save"))
{
save_project("project.json");
}
if (ImGui::MenuItem("Load"))
{
load_project("project.json");
}
ImGui::EndMenu();
}
if (ImGui::BeginMenu("Mini-map"))
{
const char* names[] = {
"Top Left",
"Top Right",
"Bottom Left",
"Bottom Right",
};
int locations[] = {
ImNodesMiniMapLocation_TopLeft,
ImNodesMiniMapLocation_TopRight,
ImNodesMiniMapLocation_BottomLeft,
ImNodesMiniMapLocation_BottomRight,
};
for (int i = 0; i < 4; i++)
{
bool selected = minimap_location_ == locations[i];
if (ImGui::MenuItem(names[i], NULL, &selected))
minimap_location_ = locations[i];
}
ImGui::EndMenu();
}
if (ImGui::BeginMenu("Style"))
{
if (ImGui::MenuItem("Classic"))
{
ImGui::StyleColorsClassic();
ImNodes::StyleColorsClassic();
}
if (ImGui::MenuItem("Dark"))
{
ImGui::StyleColorsDark();
ImNodes::StyleColorsDark();
}
if (ImGui::MenuItem("Light"))
{
ImGui::StyleColorsLight();
ImNodes::StyleColorsLight();
}
ImGui::EndMenu();
}
ImGui::EndMenuBar();
}
ImGui::TextUnformatted("Edit the color of the output color window using nodes.");
ImGui::Columns(2);
ImGui::TextUnformatted("A -- add node");
ImGui::TextUnformatted("X -- delete selected node or link");
ImGui::NextColumn();
if (ImGui::Checkbox("emulate_three_button_mouse", &emulate_three_button_mouse))
{
ImNodes::GetIO().EmulateThreeButtonMouse.Modifier =
emulate_three_button_mouse ? &ImGui::GetIO().KeyAlt : NULL;
}
ImGui::Columns(1);
ImNodes::BeginNodeEditor();
// Handle new nodes
// These are driven by the user, so we place this code before rendering the nodes
{
const bool open_popup = ImGui::IsWindowFocused(ImGuiFocusedFlags_RootAndChildWindows) &&
ImNodes::IsEditorHovered() && ImGui::IsKeyReleased(ImGuiKey_A);
ImGui::PushStyleVar(ImGuiStyleVar_WindowPadding, ImVec2(8.f, 8.f));
if (!ImGui::IsAnyItemHovered() && open_popup)
{
ImGui::OpenPopup("add node");
}
if (ImGui::BeginPopup("add node"))
{
const ImVec2 click_pos = ImGui::GetMousePosOnOpeningCurrentPopup();
if (ImGui::MenuItem("add"))
{
const Node value(NodeType::value, 0.f);
const Node op(NodeType::add);
UiNode ui_node;
ui_node.type = UiNodeType::add;
ui_node.ui.add.lhs = graph_.insert_node(value);
ui_node.ui.add.rhs = graph_.insert_node(value);
ui_node.id = graph_.insert_node(op);
graph_.insert_edge(ui_node.id, ui_node.ui.add.lhs);
graph_.insert_edge(ui_node.id, ui_node.ui.add.rhs);
nodes_.push_back(ui_node);
ImNodes::SetNodeScreenSpacePos(ui_node.id, click_pos);
}
if (ImGui::MenuItem("multiply"))
{
const Node value(NodeType::value, 0.f);
const Node op(NodeType::multiply);
UiNode ui_node;
ui_node.type = UiNodeType::multiply;
ui_node.ui.multiply.lhs = graph_.insert_node(value);
ui_node.ui.multiply.rhs = graph_.insert_node(value);
ui_node.id = graph_.insert_node(op);
graph_.insert_edge(ui_node.id, ui_node.ui.multiply.lhs);
graph_.insert_edge(ui_node.id, ui_node.ui.multiply.rhs);
nodes_.push_back(ui_node);
ImNodes::SetNodeScreenSpacePos(ui_node.id, click_pos);
}
if (ImGui::MenuItem("output") && root_node_id_ == -1)
{
const Node value(NodeType::value, 0.f);
const Node out(NodeType::output);
UiNode ui_node;
ui_node.type = UiNodeType::output;
ui_node.ui.output.r = graph_.insert_node(value);
ui_node.ui.output.g = graph_.insert_node(value);
ui_node.ui.output.b = graph_.insert_node(value);
ui_node.id = graph_.insert_node(out);
graph_.insert_edge(ui_node.id, ui_node.ui.output.r);
graph_.insert_edge(ui_node.id, ui_node.ui.output.g);
graph_.insert_edge(ui_node.id, ui_node.ui.output.b);
nodes_.push_back(ui_node);
ImNodes::SetNodeScreenSpacePos(ui_node.id, click_pos);
root_node_id_ = ui_node.id;
}
if (ImGui::MenuItem("sine"))
{
const Node value(NodeType::value, 0.f);
const Node op(NodeType::sine);
UiNode ui_node;
ui_node.type = UiNodeType::sine;
ui_node.ui.sine.input = graph_.insert_node(value);
ui_node.id = graph_.insert_node(op);
graph_.insert_edge(ui_node.id, ui_node.ui.sine.input);
nodes_.push_back(ui_node);
ImNodes::SetNodeScreenSpacePos(ui_node.id, click_pos);
}
if (ImGui::MenuItem("time"))
{
UiNode ui_node;
ui_node.type = UiNodeType::time;
ui_node.id = graph_.insert_node(Node(NodeType::time));
nodes_.push_back(ui_node);
ImNodes::SetNodeScreenSpacePos(ui_node.id, click_pos);
}
if (ImGui::MenuItem("power"))
{
const Node value(NodeType::value, 0.f);
const Node op(NodeType::power);
UiNode ui_node;
ui_node.type = UiNodeType::power;
ui_node.ui.power.lhs = graph_.insert_node(value);
ui_node.ui.power.rhs = graph_.insert_node(value);
ui_node.id = graph_.insert_node(op);
graph_.insert_edge(ui_node.id, ui_node.ui.power.lhs);
graph_.insert_edge(ui_node.id, ui_node.ui.power.rhs);
nodes_.push_back(ui_node);
ImNodes::SetNodeScreenSpacePos(ui_node.id, click_pos);
}
if (ImGui::MenuItem("cube viewport"))
{
const Node value(NodeType::value, 0.f);
const Node op(NodeType::cubeviewport);
UiNode ui_node;
ui_node.type = UiNodeType::cubeviewport;
ui_node.ui.cubeviewport.input = graph_.insert_node(value);
ui_node.id = graph_.insert_node(op);
graph_.insert_edge(ui_node.id, ui_node.ui.cubeviewport.input);
nodes_.push_back(ui_node);
std::cout << "cube viewport node created with ID: " << ui_node.id << std::endl;
ImNodes::SetNodeScreenSpacePos(ui_node.id, click_pos);
}
if (ImGui::MenuItem("sphere viewport"))
{
const Node value(NodeType::value, 0.f);
const Node op(NodeType::spherevieport);
UiNode ui_node;
ui_node.type = UiNodeType::sphereviewport;
ui_node.ui.cubeviewport.input = graph_.insert_node(value);
ui_node.id = graph_.insert_node(op);
graph_.insert_edge(ui_node.id, ui_node.ui.sphereviewport.input);
nodes_.push_back(ui_node);
std::cout << "Sphere viewport node created with ID: " << ui_node.id << std::endl;
ImNodes::SetNodeScreenSpacePos(ui_node.id, click_pos);
}
ImGui::EndPopup();
}
ImGui::PopStyleVar();
}
for (const UiNode& node : nodes_)
{
switch (node.type)
{
case UiNodeType::add:
{
const float node_width = 100.f;
ImNodes::BeginNode(node.id);
ImNodes::BeginNodeTitleBar();
ImGui::TextUnformatted("add");
ImNodes::EndNodeTitleBar();
{
ImNodes::BeginInputAttribute(node.ui.add.lhs);
const float label_width = ImGui::CalcTextSize("left").x;
ImGui::TextUnformatted("left");
if (graph_.num_edges_from_node(node.ui.add.lhs) == 0ull)
{
ImGui::SameLine();
ImGui::PushItemWidth(node_width - label_width);
ImGui::DragFloat("##hidelabel", &graph_.node(node.ui.add.lhs).value, 0.01f);
ImGui::PopItemWidth();
}
ImNodes::EndInputAttribute();
}
{
ImNodes::BeginInputAttribute(node.ui.add.rhs);
const float label_width = ImGui::CalcTextSize("right").x;
ImGui::TextUnformatted("right");
if (graph_.num_edges_from_node(node.ui.add.rhs) == 0ull)
{
ImGui::SameLine();
ImGui::PushItemWidth(node_width - label_width);
ImGui::DragFloat("##hidelabel", &graph_.node(node.ui.add.rhs).value, 0.01f);
ImGui::PopItemWidth();
}
ImNodes::EndInputAttribute();
}
ImGui::Spacing();
{
ImNodes::BeginOutputAttribute(node.id);
const float label_width = ImGui::CalcTextSize("result").x;
ImGui::Indent(node_width - label_width);
ImGui::TextUnformatted("result");
ImNodes::EndOutputAttribute();
}
ImNodes::EndNode();
}
break;
case UiNodeType::multiply:
{
const float node_width = 100.0f;
ImNodes::BeginNode(node.id);
ImNodes::BeginNodeTitleBar();
ImGui::TextUnformatted("multiply");
ImNodes::EndNodeTitleBar();
{
ImNodes::BeginInputAttribute(node.ui.multiply.lhs);
const float label_width = ImGui::CalcTextSize("left").x;
ImGui::TextUnformatted("left");
if (graph_.num_edges_from_node(node.ui.multiply.lhs) == 0ull)
{
ImGui::SameLine();
ImGui::PushItemWidth(node_width - label_width);
ImGui::DragFloat(
"##hidelabel", &graph_.node(node.ui.multiply.lhs).value, 0.01f);
ImGui::PopItemWidth();
}
ImNodes::EndInputAttribute();
}
{
ImNodes::BeginInputAttribute(node.ui.multiply.rhs);
const float label_width = ImGui::CalcTextSize("right").x;
ImGui::TextUnformatted("right");
if (graph_.num_edges_from_node(node.ui.multiply.rhs) == 0ull)
{
ImGui::SameLine();
ImGui::PushItemWidth(node_width - label_width);
ImGui::DragFloat(
"##hidelabel", &graph_.node(node.ui.multiply.rhs).value, 0.01f);
ImGui::PopItemWidth();
}
ImNodes::EndInputAttribute();
}
ImGui::Spacing();
{
ImNodes::BeginOutputAttribute(node.id);
const float label_width = ImGui::CalcTextSize("result").x;
ImGui::Indent(node_width - label_width);
ImGui::TextUnformatted("result");
ImNodes::EndOutputAttribute();
}
ImNodes::EndNode();
}
break;
case UiNodeType::output:
{
const float node_width = 100.0f;
ImNodes::PushColorStyle(ImNodesCol_TitleBar, IM_COL32(11, 109, 191, 255));
ImNodes::PushColorStyle(ImNodesCol_TitleBarHovered, IM_COL32(45, 126, 194, 255));
ImNodes::PushColorStyle(ImNodesCol_TitleBarSelected, IM_COL32(81, 148, 204, 255));
ImNodes::BeginNode(node.id);
ImNodes::BeginNodeTitleBar();
ImGui::TextUnformatted("output");
ImNodes::EndNodeTitleBar();
ImGui::Dummy(ImVec2(node_width, 0.f));
{
ImNodes::BeginInputAttribute(node.ui.output.r);
const float label_width = ImGui::CalcTextSize("r").x;
ImGui::TextUnformatted("r");
if (graph_.num_edges_from_node(node.ui.output.r) == 0ull)
{
ImGui::SameLine();
ImGui::PushItemWidth(node_width - label_width);
ImGui::DragFloat(
"##hidelabel", &graph_.node(node.ui.output.r).value, 0.01f, 0.f, 1.0f);
ImGui::PopItemWidth();
}
ImNodes::EndInputAttribute();
}
ImGui::Spacing();
{
ImNodes::BeginInputAttribute(node.ui.output.g);
const float label_width = ImGui::CalcTextSize("g").x;
ImGui::TextUnformatted("g");
if (graph_.num_edges_from_node(node.ui.output.g) == 0ull)
{
ImGui::SameLine();
ImGui::PushItemWidth(node_width - label_width);
ImGui::DragFloat(
"##hidelabel", &graph_.node(node.ui.output.g).value, 0.01f, 0.f, 1.f);
ImGui::PopItemWidth();
}
ImNodes::EndInputAttribute();
}
ImGui::Spacing();
{
ImNodes::BeginInputAttribute(node.ui.output.b);
const float label_width = ImGui::CalcTextSize("b").x;
ImGui::TextUnformatted("b");
if (graph_.num_edges_from_node(node.ui.output.b) == 0ull)
{
ImGui::SameLine();
ImGui::PushItemWidth(node_width - label_width);
ImGui::DragFloat(
"##hidelabel", &graph_.node(node.ui.output.b).value, 0.01f, 0.f, 1.0f);
ImGui::PopItemWidth();
}
ImNodes::EndInputAttribute();
}
ImNodes::EndNode();
ImNodes::PopColorStyle();
ImNodes::PopColorStyle();
ImNodes::PopColorStyle();
}
break;
case UiNodeType::sine:
{
const float node_width = 100.0f;
ImNodes::BeginNode(node.id);
ImNodes::BeginNodeTitleBar();
ImGui::TextUnformatted("sine");
ImNodes::EndNodeTitleBar();
{
ImNodes::BeginInputAttribute(node.ui.sine.input);
const float label_width = ImGui::CalcTextSize("number").x;
ImGui::TextUnformatted("number");
if (graph_.num_edges_from_node(node.ui.sine.input) == 0ull)
{
ImGui::SameLine();
ImGui::PushItemWidth(node_width - label_width);
ImGui::DragFloat(
"##hidelabel",
&graph_.node(node.ui.sine.input).value,
0.01f,
0.f,
1.0f);
ImGui::PopItemWidth();
}
ImNodes::EndInputAttribute();
}
ImGui::Spacing();
{
ImNodes::BeginOutputAttribute(node.id);
const float label_width = ImGui::CalcTextSize("output").x;
ImGui::Indent(node_width - label_width);
ImGui::TextUnformatted("output");
ImNodes::EndOutputAttribute();
}
ImNodes::EndNode();
}
break;
case UiNodeType::time:
{
ImNodes::BeginNode(node.id);
ImNodes::BeginNodeTitleBar();
ImGui::TextUnformatted("time");
ImNodes::EndNodeTitleBar();
ImNodes::BeginOutputAttribute(node.id);
ImGui::Text("output");
ImNodes::EndOutputAttribute();
ImNodes::EndNode();
}
break;
case UiNodeType::power:
{
//const float node_width = 100.f;
ImNodes::BeginNode(node.id);
ImNodes::BeginNodeTitleBar();
ImGui::TextUnformatted("Power");
ImNodes::EndNodeTitleBar();
ImNodes::BeginInputAttribute(node.ui.power.lhs);
ImGui::TextUnformatted("Base");
ImNodes::EndInputAttribute();
ImNodes::BeginInputAttribute(node.ui.power.rhs);
ImGui::TextUnformatted("Exponent");
ImNodes::EndInputAttribute();
ImNodes::BeginOutputAttribute(node.id);
ImGui::TextUnformatted("Result");
ImNodes::EndOutputAttribute();
ImNodes::EndNode();
}
break;
case UiNodeType::cubeviewport:
{
ImNodes::BeginNode(node.id);
ImNodes::BeginNodeTitleBar();
ImGui::TextUnformatted("Cube Viewport");
ImNodes::EndNodeTitleBar();
ImNodes::BeginInputAttribute(node.ui.cubeviewport.input);
ImGui::TextUnformatted("Input");
ImNodes::EndInputAttribute();
glm::vec3 color(1.0f, 1.0f, 1.0f);
if (graph_.num_edges_from_node(node.ui.cubeviewport.input) > 0)
{
int input_id = graph_.node(node.ui.cubeviewport.input).value;
color.r = clamp(graph_.node(input_id).value, 0.0f, 1.0f);
color.g = clamp(graph_.node(input_id + 1).value, 0.0f, 1.0f);
color.b = clamp(graph_.node(input_id + 2).value, 0.0f, 1.0f);
}
frameBuffer.Bind();
render_to_framebuffer_cube(color);
//frameBuffer.RescaleFrameBuffer(50,50);
ImGui::Image((ImTextureID)frameBuffer.getFrameTexture(), ImVec2(200, 200));
frameBuffer.Unbind();
ImNodes::EndNode();
}
break;
case UiNodeType::sphereviewport:
{
ImNodes::BeginNode(node.id);
ImNodes::BeginNodeTitleBar();
ImGui::TextUnformatted("Sphere Viewport");
ImNodes::EndNodeTitleBar();
ImNodes::BeginInputAttribute(node.ui.sphereviewport.input);
ImGui::TextUnformatted("Input");
ImNodes::EndInputAttribute();
glm::vec3 color(1.0f, 1.0f, 1.0f);
if (graph_.num_edges_from_node(node.ui.sphereviewport.input) > 0)
{
int input_id = graph_.node(node.ui.sphereviewport.input).value;
color.r = clamp(graph_.node(input_id).value, 0.0f, 1.0f);
color.g = clamp(graph_.node(input_id + 1).value, 0.0f, 1.0f);
color.b = clamp(graph_.node(input_id + 2).value, 0.0f, 1.0f);
}
frameBUfferSphere.Bind();
render_to_framebuffer_sphere(color);
ImGui::Image((ImTextureID)frameBUfferSphere.getFrameTexture(), ImVec2(200, 200));
frameBUfferSphere.Unbind();
ImNodes::EndNode();
}
break;
}
}
for (const auto& edge : graph_.edges())
{
// If edge doesn't start at value, then it's an internal edge, i.e.
// an edge which links a node's operation to its input. We don't
// want to render node internals with visible links.
if (graph_.node(edge.from).type != NodeType::value)
continue;
ImNodes::Link(edge.id, edge.from, edge.to);
}
ImNodes::MiniMap(0.2f, minimap_location_);
ImNodes::EndNodeEditor();
// Handle new links
// These are driven by Imnodes, so we place the code after EndNodeEditor().
{
int start_attr, end_attr;
if (ImNodes::IsLinkCreated(&start_attr, &end_attr))
{
const NodeType start_type = graph_.node(start_attr).type;
const NodeType end_type = graph_.node(end_attr).type;
const bool valid_link = start_type != end_type;
if (valid_link)
{
// Ensure the edge is always directed from the value to
// whatever produces the value
if (start_type != NodeType::value)
{
std::swap(start_attr, end_attr);
}
graph_.insert_edge(start_attr, end_attr);
}
}
}
// Handle deleted links
{
int link_id;
if (ImNodes::IsLinkDestroyed(&link_id))
{
graph_.erase_edge(link_id);
}
}
{
const int num_selected = ImNodes::NumSelectedLinks();
if (num_selected > 0 && ImGui::IsKeyReleased(ImGuiKey_X))
{
static std::vector<int> selected_links;
selected_links.resize(static_cast<size_t>(num_selected));
ImNodes::GetSelectedLinks(selected_links.data());
for (const int edge_id : selected_links)
{
graph_.erase_edge(edge_id);
}
}
}
{
const int num_selected = ImNodes::NumSelectedNodes();
if (num_selected > 0 && ImGui::IsKeyReleased(ImGuiKey_X))
{
static std::vector<int> selected_nodes;
selected_nodes.resize(static_cast<size_t>(num_selected));
ImNodes::GetSelectedNodes(selected_nodes.data());
for (const int node_id : selected_nodes)
{
graph_.erase_node(node_id);
auto iter = std::find_if(
nodes_.begin(), nodes_.end(), [node_id](const UiNode& node) -> bool {
return node.id == node_id;
});
// Erase any additional internal nodes
switch (iter->type)
{
case UiNodeType::add:
graph_.erase_node(iter->ui.add.lhs);
graph_.erase_node(iter->ui.add.rhs);
break;
case UiNodeType::multiply:
graph_.erase_node(iter->ui.multiply.lhs);
graph_.erase_node(iter->ui.multiply.rhs);
break;
case UiNodeType::output:
graph_.erase_node(iter->ui.output.r);
graph_.erase_node(iter->ui.output.g);
graph_.erase_node(iter->ui.output.b);
root_node_id_ = -1;
break;
case UiNodeType::sine:
graph_.erase_node(iter->ui.sine.input);
break;
case UiNodeType::power:
graph_.erase_node(iter->ui.power.lhs);
graph_.erase_node(iter->ui.power.rhs);
break;
//case UiNodeType::viewport:
// graph_.erase_node(iter->ui.viewport.input);
// break;
default:
break;