syntax = "proto3";
package toxicblend;

option java_package = "org.toxicblend.protobuf";
option java_outer_classname = "ToxicBlendProtos";

// A gRPC service protocol used by ToxicBlend - a Blender addon written in Rust.
// https://github.com/eadf/toxicblend.rs
service ToxicBlendService {
  // Executes a over-the-net gRPC call. Usually used by the blender addon to send a few vertices to
  // be processed by the toxicblend server.
  rpc execute (Command) returns (Reply);
}

// A single 3d vertex f64
message Vertex {
  double x = 2;
  double y = 3;
  double z = 4;
}

// A single 3d vertex f32
message Vertex32 {
  float x = 2;
  float y = 3;
  float z = 4;
}

// A vector of u64 vertices
// These can be interpreted as packed faces, single edges or any other way,
// depending on the options.
message Face {
   repeated uint64 vertices = 1;
}

// A vector of u32 vertices
// These can be interpreted as packed faces, single edges or any other way,
// depending on the options.
message Face32 {
  repeated uint32 vertices = 1;
}

// A 4x4 matrix defined by f64
message Matrix4x4 {
   double m00 = 1;
   double m01 = 2;
   double m02 = 3;
   double m03 = 4;
   
   double m10 = 5;
   double m11 = 6;
   double m12 = 7;
   double m13 = 8;
   
   double m20 = 9;
   double m21 = 10;
   double m22 = 11;
   double m23 = 12;
   
   double m30 = 13;
   double m31 = 14;
   double m32 = 15;
   double m33 = 16;
}

// A 4x4 matrix defined by f32
message Matrix4x4_32 {
  float m00 = 1;
  float m01 = 2;
  float m02 = 3;
  float m03 = 4;

  float m10 = 5;
  float m11 = 6;
  float m12 = 7;
  float m13 = 8;

  float m20 = 9;
  float m21 = 10;
  float m22 = 11;
  float m23 = 12;

  float m30 = 13;
  float m31 = 14;
  float m32 = 15;
  float m33 = 16;
}

// A model only using f64 and u64 datatypes
message Model {
  string name = 1;
  Matrix4x4 worldOrientation = 2;
  repeated Vertex vertices = 3;
  repeated Face faces = 4;
}

// A model only using f32 and u32 datatypes
message Model32 {
  string name = 1;
  Matrix4x4_32 worldOrientation = 2;
  repeated Vertex32 vertices = 3;
  repeated Face32 faces = 4;
}

// A struct of key value pairs of strings,
// used for specifying command options.
message KeyValuePair {
  string key = 1;
  string value = 2;
}

// Defines the operation to be executed.
// Typically only one of models or models32 is used.
message Command {
  // a single line string defining the command to execute
  string command = 1;
  repeated KeyValuePair options = 2;
  repeated Model models = 3;
  repeated Model32 models32 = 4;
}

// Defines the return value of the command execution
// Typically only one of models or models32 is used.
message Reply {
  repeated KeyValuePair options = 2;
  repeated Model models = 3;
  repeated Model32 models32 = 4;
}