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blueprints-example.cpp
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#include <application.h>
#include "utilities/builders.h"
#include "utilities/widgets.h"
#include <imgui_node_editor.h>
#define IMGUI_DEFINE_MATH_OPERATORS
#include <imgui_internal.h>
#include <string>
#include <vector>
#include <map>
#include <algorithm>
#include <utility>
static inline ImRect ImGui_GetItemRect()
{
return ImRect(ImGui::GetItemRectMin(), ImGui::GetItemRectMax());
}
static inline ImRect ImRect_Expanded(const ImRect& rect, float x, float y)
{
auto result = rect;
result.Min.x -= x;
result.Min.y -= y;
result.Max.x += x;
result.Max.y += y;
return result;
}
namespace ed = ax::NodeEditor;
namespace util = ax::NodeEditor::Utilities;
using namespace ax;
using ax::Widgets::IconType;
static ed::EditorContext* m_Editor = nullptr;
//extern "C" __declspec(dllimport) short __stdcall GetAsyncKeyState(int vkey);
//extern "C" bool Debug_KeyPress(int vkey)
//{
// static std::map<int, bool> state;
// auto lastState = state[vkey];
// state[vkey] = (GetAsyncKeyState(vkey) & 0x8000) != 0;
// if (state[vkey] && !lastState)
// return true;
// else
// return false;
//}
enum class PinType
{
Flow,
Bool,
Int,
Float,
String,
Object,
Function,
Delegate,
};
enum class PinKind
{
Output,
Input
};
enum class NodeType
{
Blueprint,
Simple,
Tree,
Comment,
Houdini
};
struct Node;
struct Pin
{
ed::PinId ID;
::Node* Node;
std::string Name;
PinType Type;
PinKind Kind;
Pin(int id, const char* name, PinType type):
ID(id), Node(nullptr), Name(name), Type(type), Kind(PinKind::Input)
{
}
};
struct Node
{
ed::NodeId ID;
std::string Name;
std::vector<Pin> Inputs;
std::vector<Pin> Outputs;
ImColor Color;
NodeType Type;
ImVec2 Size;
std::string State;
std::string SavedState;
Node(int id, const char* name, ImColor color = ImColor(255, 255, 255)):
ID(id), Name(name), Color(color), Type(NodeType::Blueprint), Size(0, 0)
{
}
};
struct Link
{
ed::LinkId ID;
ed::PinId StartPinID;
ed::PinId EndPinID;
ImColor Color;
Link(ed::LinkId id, ed::PinId startPinId, ed::PinId endPinId):
ID(id), StartPinID(startPinId), EndPinID(endPinId), Color(255, 255, 255)
{
}
};
static const int s_PinIconSize = 24;
static std::vector<Node> s_Nodes;
static std::vector<Link> s_Links;
static ImTextureID s_HeaderBackground = nullptr;
//static ImTextureID s_SampleImage = nullptr;
static ImTextureID s_SaveIcon = nullptr;
static ImTextureID s_RestoreIcon = nullptr;
struct NodeIdLess
{
bool operator()(const ed::NodeId& lhs, const ed::NodeId& rhs) const
{
return lhs.AsPointer() < rhs.AsPointer();
}
};
static const float s_TouchTime = 1.0f;
static std::map<ed::NodeId, float, NodeIdLess> s_NodeTouchTime;
static int s_NextId = 1;
static int GetNextId()
{
return s_NextId++;
}
//static ed::NodeId GetNextNodeId()
//{
// return ed::NodeId(GetNextId());
//}
static ed::LinkId GetNextLinkId()
{
return ed::LinkId(GetNextId());
}
static void TouchNode(ed::NodeId id)
{
s_NodeTouchTime[id] = s_TouchTime;
}
static float GetTouchProgress(ed::NodeId id)
{
auto it = s_NodeTouchTime.find(id);
if (it != s_NodeTouchTime.end() && it->second > 0.0f)
return (s_TouchTime - it->second) / s_TouchTime;
else
return 0.0f;
}
static void UpdateTouch()
{
const auto deltaTime = ImGui::GetIO().DeltaTime;
for (auto& entry : s_NodeTouchTime)
{
if (entry.second > 0.0f)
entry.second -= deltaTime;
}
}
static Node* FindNode(ed::NodeId id)
{
for (auto& node : s_Nodes)
if (node.ID == id)
return &node;
return nullptr;
}
static Link* FindLink(ed::LinkId id)
{
for (auto& link : s_Links)
if (link.ID == id)
return &link;
return nullptr;
}
static Pin* FindPin(ed::PinId id)
{
if (!id)
return nullptr;
for (auto& node : s_Nodes)
{
for (auto& pin : node.Inputs)
if (pin.ID == id)
return &pin;
for (auto& pin : node.Outputs)
if (pin.ID == id)
return &pin;
}
return nullptr;
}
static bool IsPinLinked(ed::PinId id)
{
if (!id)
return false;
for (auto& link : s_Links)
if (link.StartPinID == id || link.EndPinID == id)
return true;
return false;
}
static bool CanCreateLink(Pin* a, Pin* b)
{
if (!a || !b || a == b || a->Kind == b->Kind || a->Type != b->Type || a->Node == b->Node)
return false;
return true;
}
//static void DrawItemRect(ImColor color, float expand = 0.0f)
//{
// ImGui::GetWindowDrawList()->AddRect(
// ImGui::GetItemRectMin() - ImVec2(expand, expand),
// ImGui::GetItemRectMax() + ImVec2(expand, expand),
// color);
//};
//static void FillItemRect(ImColor color, float expand = 0.0f, float rounding = 0.0f)
//{
// ImGui::GetWindowDrawList()->AddRectFilled(
// ImGui::GetItemRectMin() - ImVec2(expand, expand),
// ImGui::GetItemRectMax() + ImVec2(expand, expand),
// color, rounding);
//};
static void BuildNode(Node* node)
{
for (auto& input : node->Inputs)
{
input.Node = node;
input.Kind = PinKind::Input;
}
for (auto& output : node->Outputs)
{
output.Node = node;
output.Kind = PinKind::Output;
}
}
static Node* SpawnInputActionNode()
{
s_Nodes.emplace_back(GetNextId(), "InputAction Fire", ImColor(255, 128, 128));
s_Nodes.back().Outputs.emplace_back(GetNextId(), "", PinType::Delegate);
s_Nodes.back().Outputs.emplace_back(GetNextId(), "Pressed", PinType::Flow);
s_Nodes.back().Outputs.emplace_back(GetNextId(), "Released", PinType::Flow);
BuildNode(&s_Nodes.back());
return &s_Nodes.back();
}
static Node* SpawnBranchNode()
{
s_Nodes.emplace_back(GetNextId(), "Branch");
s_Nodes.back().Inputs.emplace_back(GetNextId(), "", PinType::Flow);
s_Nodes.back().Inputs.emplace_back(GetNextId(), "Condition", PinType::Bool);
s_Nodes.back().Outputs.emplace_back(GetNextId(), "True", PinType::Flow);
s_Nodes.back().Outputs.emplace_back(GetNextId(), "False", PinType::Flow);
BuildNode(&s_Nodes.back());
return &s_Nodes.back();
}
static Node* SpawnDoNNode()
{
s_Nodes.emplace_back(GetNextId(), "Do N");
s_Nodes.back().Inputs.emplace_back(GetNextId(), "Enter", PinType::Flow);
s_Nodes.back().Inputs.emplace_back(GetNextId(), "N", PinType::Int);
s_Nodes.back().Inputs.emplace_back(GetNextId(), "Reset", PinType::Flow);
s_Nodes.back().Outputs.emplace_back(GetNextId(), "Exit", PinType::Flow);
s_Nodes.back().Outputs.emplace_back(GetNextId(), "Counter", PinType::Int);
BuildNode(&s_Nodes.back());
return &s_Nodes.back();
}
static Node* SpawnOutputActionNode()
{
s_Nodes.emplace_back(GetNextId(), "OutputAction");
s_Nodes.back().Inputs.emplace_back(GetNextId(), "Sample", PinType::Float);
s_Nodes.back().Outputs.emplace_back(GetNextId(), "Condition", PinType::Bool);
s_Nodes.back().Inputs.emplace_back(GetNextId(), "Event", PinType::Delegate);
BuildNode(&s_Nodes.back());
return &s_Nodes.back();
}
static Node* SpawnPrintStringNode()
{
s_Nodes.emplace_back(GetNextId(), "Print String");
s_Nodes.back().Inputs.emplace_back(GetNextId(), "", PinType::Flow);
s_Nodes.back().Inputs.emplace_back(GetNextId(), "In String", PinType::String);
s_Nodes.back().Outputs.emplace_back(GetNextId(), "", PinType::Flow);
BuildNode(&s_Nodes.back());
return &s_Nodes.back();
}
static Node* SpawnMessageNode()
{
s_Nodes.emplace_back(GetNextId(), "", ImColor(128, 195, 248));
s_Nodes.back().Type = NodeType::Simple;
s_Nodes.back().Outputs.emplace_back(GetNextId(), "Message", PinType::String);
BuildNode(&s_Nodes.back());
return &s_Nodes.back();
}
static Node* SpawnSetTimerNode()
{
s_Nodes.emplace_back(GetNextId(), "Set Timer", ImColor(128, 195, 248));
s_Nodes.back().Inputs.emplace_back(GetNextId(), "", PinType::Flow);
s_Nodes.back().Inputs.emplace_back(GetNextId(), "Object", PinType::Object);
s_Nodes.back().Inputs.emplace_back(GetNextId(), "Function Name", PinType::Function);
s_Nodes.back().Inputs.emplace_back(GetNextId(), "Time", PinType::Float);
s_Nodes.back().Inputs.emplace_back(GetNextId(), "Looping", PinType::Bool);
s_Nodes.back().Outputs.emplace_back(GetNextId(), "", PinType::Flow);
BuildNode(&s_Nodes.back());
return &s_Nodes.back();
}
static Node* SpawnLessNode()
{
s_Nodes.emplace_back(GetNextId(), "<", ImColor(128, 195, 248));
s_Nodes.back().Type = NodeType::Simple;
s_Nodes.back().Inputs.emplace_back(GetNextId(), "", PinType::Float);
s_Nodes.back().Inputs.emplace_back(GetNextId(), "", PinType::Float);
s_Nodes.back().Outputs.emplace_back(GetNextId(), "", PinType::Float);
BuildNode(&s_Nodes.back());
return &s_Nodes.back();
}
static Node* SpawnWeirdNode()
{
s_Nodes.emplace_back(GetNextId(), "o.O", ImColor(128, 195, 248));
s_Nodes.back().Type = NodeType::Simple;
s_Nodes.back().Inputs.emplace_back(GetNextId(), "", PinType::Float);
s_Nodes.back().Outputs.emplace_back(GetNextId(), "", PinType::Float);
s_Nodes.back().Outputs.emplace_back(GetNextId(), "", PinType::Float);
BuildNode(&s_Nodes.back());
return &s_Nodes.back();
}
static Node* SpawnTraceByChannelNode()
{
s_Nodes.emplace_back(GetNextId(), "Single Line Trace by Channel", ImColor(255, 128, 64));
s_Nodes.back().Inputs.emplace_back(GetNextId(), "", PinType::Flow);
s_Nodes.back().Inputs.emplace_back(GetNextId(), "Start", PinType::Flow);
s_Nodes.back().Inputs.emplace_back(GetNextId(), "End", PinType::Int);
s_Nodes.back().Inputs.emplace_back(GetNextId(), "Trace Channel", PinType::Float);
s_Nodes.back().Inputs.emplace_back(GetNextId(), "Trace Complex", PinType::Bool);
s_Nodes.back().Inputs.emplace_back(GetNextId(), "Actors to Ignore", PinType::Int);
s_Nodes.back().Inputs.emplace_back(GetNextId(), "Draw Debug Type", PinType::Bool);
s_Nodes.back().Inputs.emplace_back(GetNextId(), "Ignore Self", PinType::Bool);
s_Nodes.back().Outputs.emplace_back(GetNextId(), "", PinType::Flow);
s_Nodes.back().Outputs.emplace_back(GetNextId(), "Out Hit", PinType::Float);
s_Nodes.back().Outputs.emplace_back(GetNextId(), "Return Value", PinType::Bool);
BuildNode(&s_Nodes.back());
return &s_Nodes.back();
}
static Node* SpawnTreeSequenceNode()
{
s_Nodes.emplace_back(GetNextId(), "Sequence");
s_Nodes.back().Type = NodeType::Tree;
s_Nodes.back().Inputs.emplace_back(GetNextId(), "", PinType::Flow);
s_Nodes.back().Outputs.emplace_back(GetNextId(), "", PinType::Flow);
BuildNode(&s_Nodes.back());
return &s_Nodes.back();
}
static Node* SpawnTreeTaskNode()
{
s_Nodes.emplace_back(GetNextId(), "Move To");
s_Nodes.back().Type = NodeType::Tree;
s_Nodes.back().Inputs.emplace_back(GetNextId(), "", PinType::Flow);
BuildNode(&s_Nodes.back());
return &s_Nodes.back();
}
static Node* SpawnTreeTask2Node()
{
s_Nodes.emplace_back(GetNextId(), "Random Wait");
s_Nodes.back().Type = NodeType::Tree;
s_Nodes.back().Inputs.emplace_back(GetNextId(), "", PinType::Flow);
BuildNode(&s_Nodes.back());
return &s_Nodes.back();
}
static Node* SpawnComment()
{
s_Nodes.emplace_back(GetNextId(), "Test Comment");
s_Nodes.back().Type = NodeType::Comment;
s_Nodes.back().Size = ImVec2(300, 200);
return &s_Nodes.back();
}
static Node* SpawnHoudiniTransformNode()
{
s_Nodes.emplace_back(GetNextId(), "Transform");
s_Nodes.back().Type = NodeType::Houdini;
s_Nodes.back().Inputs.emplace_back(GetNextId(), "", PinType::Flow);
s_Nodes.back().Outputs.emplace_back(GetNextId(), "", PinType::Flow);
BuildNode(&s_Nodes.back());
return &s_Nodes.back();
}
static Node* SpawnHoudiniGroupNode()
{
s_Nodes.emplace_back(GetNextId(), "Group");
s_Nodes.back().Type = NodeType::Houdini;
s_Nodes.back().Inputs.emplace_back(GetNextId(), "", PinType::Flow);
s_Nodes.back().Inputs.emplace_back(GetNextId(), "", PinType::Flow);
s_Nodes.back().Outputs.emplace_back(GetNextId(), "", PinType::Flow);
BuildNode(&s_Nodes.back());
return &s_Nodes.back();
}
void BuildNodes()
{
for (auto& node : s_Nodes)
BuildNode(&node);
}
const char* Application_GetName()
{
return "Blueprints";
}
void Application_Initialize()
{
ed::Config config;
config.SettingsFile = "Blueprints.json";
config.LoadNodeSettings = [](ed::NodeId nodeId, char* data, void* userPointer) -> size_t
{
auto node = FindNode(nodeId);
if (!node)
return 0;
if (data != nullptr)
memcpy(data, node->State.data(), node->State.size());
return node->State.size();
};
config.SaveNodeSettings = [](ed::NodeId nodeId, const char* data, size_t size, ed::SaveReasonFlags reason, void* userPointer) -> bool
{
auto node = FindNode(nodeId);
if (!node)
return false;
node->State.assign(data, size);
TouchNode(nodeId);
return true;
};
m_Editor = ed::CreateEditor(&config);
ed::SetCurrentEditor(m_Editor);
Node* node;
node = SpawnInputActionNode(); ed::SetNodePosition(node->ID, ImVec2(-252, 220));
node = SpawnBranchNode(); ed::SetNodePosition(node->ID, ImVec2(-300, 351));
node = SpawnDoNNode(); ed::SetNodePosition(node->ID, ImVec2(-238, 504));
node = SpawnOutputActionNode(); ed::SetNodePosition(node->ID, ImVec2(71, 80));
node = SpawnSetTimerNode(); ed::SetNodePosition(node->ID, ImVec2(168, 316));
node = SpawnTreeSequenceNode(); ed::SetNodePosition(node->ID, ImVec2(1028, 329));
node = SpawnTreeTaskNode(); ed::SetNodePosition(node->ID, ImVec2(1204, 458));
node = SpawnTreeTask2Node(); ed::SetNodePosition(node->ID, ImVec2(868, 538));
node = SpawnComment(); ed::SetNodePosition(node->ID, ImVec2(112, 576));
node = SpawnComment(); ed::SetNodePosition(node->ID, ImVec2(800, 224));
node = SpawnLessNode(); ed::SetNodePosition(node->ID, ImVec2(366, 652));
node = SpawnWeirdNode(); ed::SetNodePosition(node->ID, ImVec2(144, 652));
node = SpawnMessageNode(); ed::SetNodePosition(node->ID, ImVec2(-348, 698));
node = SpawnPrintStringNode(); ed::SetNodePosition(node->ID, ImVec2(-69, 652));
node = SpawnHoudiniTransformNode(); ed::SetNodePosition(node->ID, ImVec2(500, -70));
node = SpawnHoudiniGroupNode(); ed::SetNodePosition(node->ID, ImVec2(500, 42));
ed::NavigateToContent();
BuildNodes();
s_Links.push_back(Link(GetNextLinkId(), s_Nodes[5].Outputs[0].ID, s_Nodes[6].Inputs[0].ID));
s_Links.push_back(Link(GetNextLinkId(), s_Nodes[5].Outputs[0].ID, s_Nodes[7].Inputs[0].ID));
s_Links.push_back(Link(GetNextLinkId(), s_Nodes[14].Outputs[0].ID, s_Nodes[15].Inputs[0].ID));
s_HeaderBackground = Application_LoadTexture("Data/BlueprintBackground.png");
s_SaveIcon = Application_LoadTexture("Data/ic_save_white_24dp.png");
s_RestoreIcon = Application_LoadTexture("Data/ic_restore_white_24dp.png");
//auto& io = ImGui::GetIO();
}
void Application_Finalize()
{
auto releaseTexture = [](ImTextureID& id)
{
if (id)
{
Application_DestroyTexture(id);
id = nullptr;
}
};
releaseTexture(s_RestoreIcon);
releaseTexture(s_SaveIcon);
releaseTexture(s_HeaderBackground);
if (m_Editor)
{
ed::DestroyEditor(m_Editor);
m_Editor = nullptr;
}
}
static bool Splitter(bool split_vertically, float thickness, float* size1, float* size2, float min_size1, float min_size2, float splitter_long_axis_size = -1.0f)
{
using namespace ImGui;
ImGuiContext& g = *GImGui;
ImGuiWindow* window = g.CurrentWindow;
ImGuiID id = window->GetID("##Splitter");
ImRect bb;
bb.Min = window->DC.CursorPos + (split_vertically ? ImVec2(*size1, 0.0f) : ImVec2(0.0f, *size1));
bb.Max = bb.Min + CalcItemSize(split_vertically ? ImVec2(thickness, splitter_long_axis_size) : ImVec2(splitter_long_axis_size, thickness), 0.0f, 0.0f);
return SplitterBehavior(bb, id, split_vertically ? ImGuiAxis_X : ImGuiAxis_Y, size1, size2, min_size1, min_size2, 0.0f);
}
ImColor GetIconColor(PinType type)
{
switch (type)
{
default:
case PinType::Flow: return ImColor(255, 255, 255);
case PinType::Bool: return ImColor(220, 48, 48);
case PinType::Int: return ImColor( 68, 201, 156);
case PinType::Float: return ImColor(147, 226, 74);
case PinType::String: return ImColor(124, 21, 153);
case PinType::Object: return ImColor( 51, 150, 215);
case PinType::Function: return ImColor(218, 0, 183);
case PinType::Delegate: return ImColor(255, 48, 48);
}
};
void DrawPinIcon(const Pin& pin, bool connected, int alpha)
{
IconType iconType;
ImColor color = GetIconColor(pin.Type);
color.Value.w = alpha / 255.0f;
switch (pin.Type)
{
case PinType::Flow: iconType = IconType::Flow; break;
case PinType::Bool: iconType = IconType::Circle; break;
case PinType::Int: iconType = IconType::Circle; break;
case PinType::Float: iconType = IconType::Circle; break;
case PinType::String: iconType = IconType::Circle; break;
case PinType::Object: iconType = IconType::Circle; break;
case PinType::Function: iconType = IconType::Circle; break;
case PinType::Delegate: iconType = IconType::Square; break;
default:
return;
}
ax::Widgets::Icon(ImVec2(s_PinIconSize, s_PinIconSize), iconType, connected, color, ImColor(32, 32, 32, alpha));
};
void ShowStyleEditor(bool* show = nullptr)
{
if (!ImGui::Begin("Style", show))
{
ImGui::End();
return;
}
auto paneWidth = ImGui::GetContentRegionAvailWidth();
auto& editorStyle = ed::GetStyle();
ImGui::BeginHorizontal("Style buttons", ImVec2(paneWidth, 0), 1.0f);
ImGui::TextUnformatted("Values");
ImGui::Spring();
if (ImGui::Button("Reset to defaults"))
editorStyle = ed::Style();
ImGui::EndHorizontal();
ImGui::Spacing();
ImGui::DragFloat4("Node Padding", &editorStyle.NodePadding.x, 0.1f, 0.0f, 40.0f);
ImGui::DragFloat("Node Rounding", &editorStyle.NodeRounding, 0.1f, 0.0f, 40.0f);
ImGui::DragFloat("Node Border Width", &editorStyle.NodeBorderWidth, 0.1f, 0.0f, 15.0f);
ImGui::DragFloat("Hovered Node Border Width", &editorStyle.HoveredNodeBorderWidth, 0.1f, 0.0f, 15.0f);
ImGui::DragFloat("Selected Node Border Width", &editorStyle.SelectedNodeBorderWidth, 0.1f, 0.0f, 15.0f);
ImGui::DragFloat("Pin Rounding", &editorStyle.PinRounding, 0.1f, 0.0f, 40.0f);
ImGui::DragFloat("Pin Border Width", &editorStyle.PinBorderWidth, 0.1f, 0.0f, 15.0f);
ImGui::DragFloat("Link Strength", &editorStyle.LinkStrength, 1.0f, 0.0f, 500.0f);
//ImVec2 SourceDirection;
//ImVec2 TargetDirection;
ImGui::DragFloat("Scroll Duration", &editorStyle.ScrollDuration, 0.001f, 0.0f, 2.0f);
ImGui::DragFloat("Flow Marker Distance", &editorStyle.FlowMarkerDistance, 1.0f, 1.0f, 200.0f);
ImGui::DragFloat("Flow Speed", &editorStyle.FlowSpeed, 1.0f, 1.0f, 2000.0f);
ImGui::DragFloat("Flow Duration", &editorStyle.FlowDuration, 0.001f, 0.0f, 5.0f);
//ImVec2 PivotAlignment;
//ImVec2 PivotSize;
//ImVec2 PivotScale;
//float PinCorners;
//float PinRadius;
//float PinArrowSize;
//float PinArrowWidth;
ImGui::DragFloat("Group Rounding", &editorStyle.GroupRounding, 0.1f, 0.0f, 40.0f);
ImGui::DragFloat("Group Border Width", &editorStyle.GroupBorderWidth, 0.1f, 0.0f, 15.0f);
ImGui::Separator();
static ImGuiColorEditFlags edit_mode = ImGuiColorEditFlags_RGB;
ImGui::BeginHorizontal("Color Mode", ImVec2(paneWidth, 0), 1.0f);
ImGui::TextUnformatted("Filter Colors");
ImGui::Spring();
ImGui::RadioButton("RGB", &edit_mode, ImGuiColorEditFlags_RGB);
ImGui::Spring(0);
ImGui::RadioButton("HSV", &edit_mode, ImGuiColorEditFlags_HSV);
ImGui::Spring(0);
ImGui::RadioButton("HEX", &edit_mode, ImGuiColorEditFlags_HEX);
ImGui::EndHorizontal();
static ImGuiTextFilter filter;
filter.Draw("", paneWidth);
ImGui::Spacing();
ImGui::PushItemWidth(-160);
for (int i = 0; i < ed::StyleColor_Count; ++i)
{
auto name = ed::GetStyleColorName((ed::StyleColor)i);
if (!filter.PassFilter(name))
continue;
ImGui::ColorEdit4(name, &editorStyle.Colors[i].x, edit_mode);
}
ImGui::PopItemWidth();
ImGui::End();
}
void ShowLeftPane(float paneWidth)
{
auto& io = ImGui::GetIO();
ImGui::BeginChild("Selection", ImVec2(paneWidth, 0));
paneWidth = ImGui::GetContentRegionAvailWidth();
static bool showStyleEditor = false;
ImGui::BeginHorizontal("Style Editor", ImVec2(paneWidth, 0));
ImGui::Spring(0.0f, 0.0f);
if (ImGui::Button("Zoom to Content"))
ed::NavigateToContent();
ImGui::Spring(0.0f);
if (ImGui::Button("Show Flow"))
{
for (auto& link : s_Links)
ed::Flow(link.ID);
}
ImGui::Spring();
if (ImGui::Button("Edit Style"))
showStyleEditor = true;
ImGui::EndHorizontal();
if (showStyleEditor)
ShowStyleEditor(&showStyleEditor);
std::vector<ed::NodeId> selectedNodes;
std::vector<ed::LinkId> selectedLinks;
selectedNodes.resize(ed::GetSelectedObjectCount());
selectedLinks.resize(ed::GetSelectedObjectCount());
int nodeCount = ed::GetSelectedNodes(selectedNodes.data(), static_cast<int>(selectedNodes.size()));
int linkCount = ed::GetSelectedLinks(selectedLinks.data(), static_cast<int>(selectedLinks.size()));
selectedNodes.resize(nodeCount);
selectedLinks.resize(linkCount);
int saveIconWidth = Application_GetTextureWidth(s_SaveIcon);
int saveIconHeight = Application_GetTextureWidth(s_SaveIcon);
int restoreIconWidth = Application_GetTextureWidth(s_RestoreIcon);
int restoreIconHeight = Application_GetTextureWidth(s_RestoreIcon);
ImGui::GetWindowDrawList()->AddRectFilled(
ImGui::GetCursorScreenPos(),
ImGui::GetCursorScreenPos() + ImVec2(paneWidth, ImGui::GetTextLineHeight()),
ImColor(ImGui::GetStyle().Colors[ImGuiCol_HeaderActive]), ImGui::GetTextLineHeight() * 0.25f);
ImGui::Spacing(); ImGui::SameLine();
ImGui::TextUnformatted("Nodes");
ImGui::Indent();
for (auto& node : s_Nodes)
{
ImGui::PushID(node.ID.AsPointer());
auto start = ImGui::GetCursorScreenPos();
if (const auto progress = GetTouchProgress(node.ID))
{
ImGui::GetWindowDrawList()->AddLine(
start + ImVec2(-8, 0),
start + ImVec2(-8, ImGui::GetTextLineHeight()),
IM_COL32(255, 0, 0, 255 - (int)(255 * progress)), 4.0f);
}
bool isSelected = std::find(selectedNodes.begin(), selectedNodes.end(), node.ID) != selectedNodes.end();
if (ImGui::Selectable((node.Name + "##" + std::to_string(reinterpret_cast<uintptr_t>(node.ID.AsPointer()))).c_str(), &isSelected))
{
if (io.KeyCtrl)
{
if (isSelected)
ed::SelectNode(node.ID, true);
else
ed::DeselectNode(node.ID);
}
else
ed::SelectNode(node.ID, false);
ed::NavigateToSelection();
}
if (ImGui::IsItemHovered() && !node.State.empty())
ImGui::SetTooltip("State: %s", node.State.c_str());
auto id = std::string("(") + std::to_string(reinterpret_cast<uintptr_t>(node.ID.AsPointer())) + ")";
auto textSize = ImGui::CalcTextSize(id.c_str(), nullptr);
auto iconPanelPos = start + ImVec2(
paneWidth - ImGui::GetStyle().FramePadding.x - ImGui::GetStyle().IndentSpacing - saveIconWidth - restoreIconWidth - ImGui::GetStyle().ItemInnerSpacing.x * 1,
(ImGui::GetTextLineHeight() - saveIconHeight) / 2);
ImGui::GetWindowDrawList()->AddText(
ImVec2(iconPanelPos.x - textSize.x - ImGui::GetStyle().ItemInnerSpacing.x, start.y),
IM_COL32(255, 255, 255, 255), id.c_str(), nullptr);
auto drawList = ImGui::GetWindowDrawList();
ImGui::SetCursorScreenPos(iconPanelPos);
ImGui::SetItemAllowOverlap();
if (node.SavedState.empty())
{
if (ImGui::InvisibleButton("save", ImVec2((float)saveIconWidth, (float)saveIconHeight)))
node.SavedState = node.State;
if (ImGui::IsItemActive())
drawList->AddImage(s_SaveIcon, ImGui::GetItemRectMin(), ImGui::GetItemRectMax(), ImVec2(0, 0), ImVec2(1, 1), IM_COL32(255, 255, 255, 96));
else if (ImGui::IsItemHovered())
drawList->AddImage(s_SaveIcon, ImGui::GetItemRectMin(), ImGui::GetItemRectMax(), ImVec2(0, 0), ImVec2(1, 1), IM_COL32(255, 255, 255, 255));
else
drawList->AddImage(s_SaveIcon, ImGui::GetItemRectMin(), ImGui::GetItemRectMax(), ImVec2(0, 0), ImVec2(1, 1), IM_COL32(255, 255, 255, 160));
}
else
{
ImGui::Dummy(ImVec2((float)saveIconWidth, (float)saveIconHeight));
drawList->AddImage(s_SaveIcon, ImGui::GetItemRectMin(), ImGui::GetItemRectMax(), ImVec2(0, 0), ImVec2(1, 1), IM_COL32(255, 255, 255, 32));
}
ImGui::SameLine(0, ImGui::GetStyle().ItemInnerSpacing.x);
ImGui::SetItemAllowOverlap();
if (!node.SavedState.empty())
{
if (ImGui::InvisibleButton("restore", ImVec2((float)restoreIconWidth, (float)restoreIconHeight)))
{
node.State = node.SavedState;
ed::RestoreNodeState(node.ID);
node.SavedState.clear();
}
if (ImGui::IsItemActive())
drawList->AddImage(s_RestoreIcon, ImGui::GetItemRectMin(), ImGui::GetItemRectMax(), ImVec2(0, 0), ImVec2(1, 1), IM_COL32(255, 255, 255, 96));
else if (ImGui::IsItemHovered())
drawList->AddImage(s_RestoreIcon, ImGui::GetItemRectMin(), ImGui::GetItemRectMax(), ImVec2(0, 0), ImVec2(1, 1), IM_COL32(255, 255, 255, 255));
else
drawList->AddImage(s_RestoreIcon, ImGui::GetItemRectMin(), ImGui::GetItemRectMax(), ImVec2(0, 0), ImVec2(1, 1), IM_COL32(255, 255, 255, 160));
}
else
{
ImGui::Dummy(ImVec2((float)restoreIconWidth, (float)restoreIconHeight));
drawList->AddImage(s_RestoreIcon, ImGui::GetItemRectMin(), ImGui::GetItemRectMax(), ImVec2(0, 0), ImVec2(1, 1), IM_COL32(255, 255, 255, 32));
}
ImGui::SameLine(0, 0);
ImGui::SetItemAllowOverlap();
ImGui::Dummy(ImVec2(0, (float)restoreIconHeight));
ImGui::PopID();
}
ImGui::Unindent();
static int changeCount = 0;
ImGui::GetWindowDrawList()->AddRectFilled(
ImGui::GetCursorScreenPos(),
ImGui::GetCursorScreenPos() + ImVec2(paneWidth, ImGui::GetTextLineHeight()),
ImColor(ImGui::GetStyle().Colors[ImGuiCol_HeaderActive]), ImGui::GetTextLineHeight() * 0.25f);
ImGui::Spacing(); ImGui::SameLine();
ImGui::TextUnformatted("Selection");
ImGui::BeginHorizontal("Selection Stats", ImVec2(paneWidth, 0));
ImGui::Text("Changed %d time%s", changeCount, changeCount > 1 ? "s" : "");
ImGui::Spring();
if (ImGui::Button("Deselect All"))
ed::ClearSelection();
ImGui::EndHorizontal();
ImGui::Indent();
for (int i = 0; i < nodeCount; ++i) ImGui::Text("Node (%p)", selectedNodes[i].AsPointer());
for (int i = 0; i < linkCount; ++i) ImGui::Text("Link (%p)", selectedLinks[i].AsPointer());
ImGui::Unindent();
if (ImGui::IsKeyPressed(ImGui::GetKeyIndex(ImGuiKey_Z)))
for (auto& link : s_Links)
ed::Flow(link.ID);
if (ed::HasSelectionChanged())
++changeCount;
ImGui::EndChild();
}
void Application_Frame()
{
UpdateTouch();
auto& io = ImGui::GetIO();
ImGui::Text("FPS: %.2f (%.2gms)", io.Framerate, io.Framerate ? 1000.0f / io.Framerate : 0.0f);
ed::SetCurrentEditor(m_Editor);
//auto& style = ImGui::GetStyle();
# if 0
{
for (auto x = -io.DisplaySize.y; x < io.DisplaySize.x; x += 10.0f)
{
ImGui::GetWindowDrawList()->AddLine(ImVec2(x, 0), ImVec2(x + io.DisplaySize.y, io.DisplaySize.y),
IM_COL32(255, 255, 0, 255));
}
}
# endif
static ed::NodeId contextNodeId = 0;
static ed::LinkId contextLinkId = 0;
static ed::PinId contextPinId = 0;
static bool createNewNode = false;
static Pin* newNodeLinkPin = nullptr;
static Pin* newLinkPin = nullptr;
static float leftPaneWidth = 400.0f;
static float rightPaneWidth = 800.0f;
Splitter(true, 4.0f, &leftPaneWidth, &rightPaneWidth, 50.0f, 50.0f);
ShowLeftPane(leftPaneWidth - 4.0f);
ImGui::SameLine(0.0f, 12.0f);
ed::Begin("Node editor");
{
auto cursorTopLeft = ImGui::GetCursorScreenPos();
util::BlueprintNodeBuilder builder(s_HeaderBackground, Application_GetTextureWidth(s_HeaderBackground), Application_GetTextureHeight(s_HeaderBackground));
for (auto& node : s_Nodes)
{
if (node.Type != NodeType::Blueprint && node.Type != NodeType::Simple)
continue;
const auto isSimple = node.Type == NodeType::Simple;
bool hasOutputDelegates = false;
for (auto& output : node.Outputs)
if (output.Type == PinType::Delegate)
hasOutputDelegates = true;
builder.Begin(node.ID);
if (!isSimple)
{
builder.Header(node.Color);
ImGui::Spring(0);
ImGui::TextUnformatted(node.Name.c_str());
ImGui::Spring(1);
ImGui::Dummy(ImVec2(0, 28));
if (hasOutputDelegates)
{
ImGui::BeginVertical("delegates", ImVec2(0, 28));
ImGui::Spring(1, 0);
for (auto& output : node.Outputs)
{
if (output.Type != PinType::Delegate)
continue;
auto alpha = ImGui::GetStyle().Alpha;
if (newLinkPin && !CanCreateLink(newLinkPin, &output) && &output != newLinkPin)
alpha = alpha * (48.0f / 255.0f);
ed::BeginPin(output.ID, ed::PinKind::Output);
ed::PinPivotAlignment(ImVec2(1.0f, 0.5f));
ed::PinPivotSize(ImVec2(0, 0));
ImGui::BeginHorizontal(output.ID.AsPointer());
ImGui::PushStyleVar(ImGuiStyleVar_Alpha, alpha);
if (!output.Name.empty())
{
ImGui::TextUnformatted(output.Name.c_str());
ImGui::Spring(0);
}
DrawPinIcon(output, IsPinLinked(output.ID), (int)(alpha * 255));
ImGui::Spring(0, ImGui::GetStyle().ItemSpacing.x / 2);
ImGui::EndHorizontal();
ImGui::PopStyleVar();
ed::EndPin();
//DrawItemRect(ImColor(255, 0, 0));
}
ImGui::Spring(1, 0);
ImGui::EndVertical();
ImGui::Spring(0, ImGui::GetStyle().ItemSpacing.x / 2);
}
else
ImGui::Spring(0);
builder.EndHeader();
}
for (auto& input : node.Inputs)
{
auto alpha = ImGui::GetStyle().Alpha;
if (newLinkPin && !CanCreateLink(newLinkPin, &input) && &input != newLinkPin)
alpha = alpha * (48.0f / 255.0f);
builder.Input(input.ID);
ImGui::PushStyleVar(ImGuiStyleVar_Alpha, alpha);
DrawPinIcon(input, IsPinLinked(input.ID), (int)(alpha * 255));
ImGui::Spring(0);
if (!input.Name.empty())
{
ImGui::TextUnformatted(input.Name.c_str());
ImGui::Spring(0);
}