NoisePerlinNode.cpp

#include "Generators/CPUNodeEditor/Nodes/NoisePerlinNode.h"
#include "FastNoiseLite/FastNoiseLite.h"
#include "Generators/CPUNodeEditor/CPUNodeEditor.h"
 
static const char *fractalTypes[] = { "None", "FBm", "Ridged", "PingPong" };
 
NodeOutput NoisePerlinNode::Evaluate(NodeInputParam input, NodeEditorPin *pin)
{
    if(!inputPins[0]->IsLinked())
    {
        noiseGen->SetSeed(seed);
    }
 
    else
    {
        noiseGen->SetSeed((int)inputPins[0]->other->Evaluate(input).value);
    }
 
    if (!inputPins[2]->IsLinked())
    {
        noiseGen->SetFrequency(frequency);
    }
 
    else
    {
        noiseGen->SetFrequency(inputPins[2]->other->Evaluate(input).value);
    }
 
    if(fractalType == 0)
    {
        noiseGen->SetFractalType(FastNoiseLite::FractalType::FractalType_None);
    }
 
    else if (fractalType == 1)
    {
        noiseGen->SetFractalType(FastNoiseLite::FractalType::FractalType_FBm);
    }
 
    else if (fractalType == 2)
    {
        noiseGen->SetFractalType(FastNoiseLite::FractalType::FractalType_Ridged);
    }
 
    else if (fractalType == 3)
    {
        noiseGen->SetFractalType(FastNoiseLite::FractalType::FractalType_PingPong);
    }
 
    else
    {
        noiseGen->SetFractalType(FastNoiseLite::FractalType::FractalType_None);
    }
 
    if (!inputPins[1]->IsLinked())
    {
        noiseGen->SetFractalOctaves(octaves);
    }
 
    else
    {
        noiseGen->SetFrequency(inputPins[1]->other->Evaluate(input).value);
    }
 
    if (!inputPins[3]->IsLinked())
    {
        noiseGen->SetFractalLacunarity(lacunarity);
    }
 
    else
    {
        noiseGen->SetFractalLacunarity(inputPins[3]->other->Evaluate(input).value);
    }
 
    if (!inputPins[4]->IsLinked())
    {
        noiseGen->SetFractalGain(gain);
    }
 
    else
    {
        noiseGen->SetFractalGain(inputPins[4]->other->Evaluate(input).value);
    }
 
    if (!inputPins[5]->IsLinked())
    {
        noiseGen->SetFractalWeightedStrength(weightedStrength);
    }
 
    else
    {
        noiseGen->SetFractalWeightedStrength(inputPins[5]->other->Evaluate(input).value);
    }
 
    if (!inputPins[6]->IsLinked())
    {
        noiseGen->SetFractalPingPongStrength(pingPongStrength);
    }
 
    else
    {
        noiseGen->SetFractalPingPongStrength(inputPins[6]->other->Evaluate(input).value);
    }
 
    float st = strength;
 
    if (inputPins[7]->IsLinked())
    {
        st = inputPins[7]->other->Evaluate(input).value;
    }
 
    return NodeOutput({ noiseGen->GetNoise(input.x, input.y, input.z) * st });
}
 
void NoisePerlinNode::Load(nlohmann::json data)
{
    frequency = data["frequency"];
    seed = data["seed"];
    lacunarity = data["lacunarity"];
    weightedStrength = data["weightedStrength"];
    octaves = data["octaves"];
    pingPongStrength = data["pingPongStrength"];
    gain = data["gain"];
    strength = data["strength"];
    fractalType = data["fractalType"];
}
 
nlohmann::json NoisePerlinNode::Save()
{
    nlohmann::json data;
    data["type"] = MeshNodeEditor::MeshNodeType::NoisePerlin;
    data["frequency"] = frequency;
    data["seed"] = seed;
    data["lacunarity"] = lacunarity;
    data["weightedStrength"] = weightedStrength;
    data["octaves"] = octaves;
    data["pingPongStrength"] = pingPongStrength;
    data["gain"] = gain;
    data["strength"] = strength;
    data["fractalType"] = fractalType;
    return data;
}
 
void NoisePerlinNode::OnRender()
{
    DrawHeader("Perlin Noise");
    ImGui::Dummy(ImVec2(150, 10));
    ImGui::SameLine();
    ImGui::Text("Out");
    outputPins[0]->Render();
    inputPins[0]->Render();
    ImGui::Text("Seed");
 
    if (!inputPins[0]->IsLinked())
    {
        ImGui::Dummy(ImVec2(30, 10));
        ImGui::SameLine();
        ImGui::PushItemWidth(100);
        ImGui::DragInt(MAKE_IMGUI_ID(inputPins[0]->id), &seed, 1);
        ImGui::PopItemWidth();
    }
 
    else
    {
        ImGui::NewLine();
    }
 
    inputPins[1]->Render();
    ImGui::Text("Octaves");
 
    if (!inputPins[1]->IsLinked())
    {
        ImGui::Dummy(ImVec2(30, 10));
        ImGui::SameLine();
        ImGui::PushItemWidth(100);
        ImGui::DragInt(MAKE_IMGUI_ID(inputPins[1]->id), &octaves, 1);
        ImGui::PopItemWidth();
    }
 
    else
    {
        ImGui::NewLine();
    }
 
    inputPins[2]->Render();
    ImGui::Text("Frequency");
 
    if (!inputPins[2]->IsLinked())
    {
        ImGui::Dummy(ImVec2(30, 10));
        ImGui::SameLine();
        ImGui::PushItemWidth(100);
        ImGui::DragFloat(MAKE_IMGUI_ID(inputPins[2]->id), &frequency, 0.001f);
        ImGui::PopItemWidth();
    }
 
    else
    {
        ImGui::NewLine();
    }
 
    inputPins[3]->Render();
    ImGui::Text("Lacunarity");
 
    if (!inputPins[3]->IsLinked())
    {
        ImGui::Dummy(ImVec2(30, 10));
        ImGui::SameLine();
        ImGui::PushItemWidth(100);
        ImGui::DragFloat(MAKE_IMGUI_ID(inputPins[3]->id), &lacunarity, 0.01f);
        ImGui::PopItemWidth();
    }
 
    else
    {
        ImGui::NewLine();
    }
 
    inputPins[4]->Render();
    ImGui::Text("Gain");
 
    if (!inputPins[4]->IsLinked())
    {
        ImGui::Dummy(ImVec2(30, 10));
        ImGui::SameLine();
        ImGui::PushItemWidth(100);
        ImGui::DragFloat(MAKE_IMGUI_ID(inputPins[4]->id), &gain, 0.01f);
        ImGui::PopItemWidth();
    }
 
    else
    {
        ImGui::NewLine();
    }
 
    inputPins[5]->Render();
    ImGui::Text("Weighted Strength");
 
    if (!inputPins[5]->IsLinked())
    {
        ImGui::Dummy(ImVec2(30, 10));
        ImGui::SameLine();
        ImGui::PushItemWidth(100);
        ImGui::DragFloat(MAKE_IMGUI_ID(inputPins[5]->id), &weightedStrength, 0.01f, 0, 1);
        ImGui::PopItemWidth();
    }
 
    else
    {
        ImGui::NewLine();
    }
 
    inputPins[6]->Render();
    ImGui::Text("Ping Pong Strength");
 
    if (!inputPins[6]->IsLinked())
    {
        ImGui::Dummy(ImVec2(30, 10));
        ImGui::SameLine();
        ImGui::PushItemWidth(100);
        ImGui::DragFloat(MAKE_IMGUI_ID(inputPins[6]->id), &pingPongStrength, 0.01f);
        ImGui::PopItemWidth();
    }
 
    else
    {
        ImGui::NewLine();
    }
 
    inputPins[7]->Render();
    ImGui::Text("Strength");
 
    if (!inputPins[7]->IsLinked())
    {
        ImGui::Dummy(ImVec2(30, 10));
        ImGui::SameLine();
        ImGui::PushItemWidth(100);
        ImGui::DragFloat(MAKE_IMGUI_ID(inputPins[7]->id), &strength, 0.01f);
        ImGui::PopItemWidth();
    }
 
    else
    {
        ImGui::NewLine();
    }
 
    ImGui::NewLine();
    ImGui::Text("Current Fractal Type : ");
    ImGui::SameLine();
    ImGui::Text(fractalTypes[fractalType]);
 
    if (ImGui::Button(MAKE_IMGUI_LABEL(id, "Change Fractal Type")))
    {
        fractalType++;
 
        if (fractalType == 4)
        {
            fractalType = 0;
        }
    }
}
 
NoisePerlinNode::NoisePerlinNode()
{
    headerColor = ImColor(NOISE_NODE_COLOR);
    inputPins.push_back(new NodeEditorPin());
    inputPins.push_back(new NodeEditorPin());
    inputPins.push_back(new NodeEditorPin());
    inputPins.push_back(new NodeEditorPin());
    inputPins.push_back(new NodeEditorPin());
    inputPins.push_back(new NodeEditorPin());
    inputPins.push_back(new NodeEditorPin());
    inputPins.push_back(new NodeEditorPin());
    inputPins.push_back(new NodeEditorPin());
    outputPins.push_back(new NodeEditorPin(NodeEditorPinType::Output));
    seed = 42;
    frequency = 0.01f;
    fractalType = 0;
    octaves = 3;
    lacunarity = 2.0f;
    gain = 0.5f;
    weightedStrength = 0.0f; // should be within 0 to 1
    pingPongStrength = 2.0f;
    strength = 1.0f;
    noiseGen = new FastNoiseLite();
    noiseGen->SetNoiseType(FastNoiseLite::NoiseType::NoiseType_Perlin);
}
 
NoisePerlinNode::~NoisePerlinNode()
{
    delete noiseGen;
}