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Extremely basic blend tree editing.

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This commit is contained in:
Martin Felis 2024-04-25 21:12:08 +02:00
parent 3fb2995b02
commit 5e34aaf3db
7 changed files with 256 additions and 43 deletions
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1
CMakeLists.txt
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@ -124,6 +124,7 @@ set(ozz_offline_test_objs
target_sources(runtests PRIVATE
tests/AnimGraphResourceTests.cc
tests/AnimGraphEditorTests.cc
# tests/AnimGraphEvalTests.cc
tests/NodeDescriptorTests.cc
tests/SyncTrackTests.cc

173
src/AnimGraph/AnimGraphEditor.cc
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@ -37,14 +37,6 @@ ImNodesPinShape sGetSocketShapeFromSocketType(const SocketType& socket_type) {
return ImNodesPinShape_Quad;
}
int GetNodeInputSocketId(int node_index, int input_socket_index) {
return node_index * 1000 + input_socket_index;
}
int GetNodeOutputSocketId(int node_index, int output_socket_index) {
return node_index * 1000 + 100 + output_socket_index;
}
void NodeSocketEditor(Socket& socket) {
int mode_current = static_cast<int>(socket.m_type);
ImGui::InputText("Name", &socket.m_name);
@ -61,20 +53,18 @@ void RemoveBlendTreeConnectionsForSocket(
BlendTreeResource& blend_tree_resource,
AnimNodeResource* node_resource,
Socket& socket) {
std::vector<BlendTreeConnectionResource>::const_iterator iter =
blend_tree_resource.GetConnections().begin();
const BlendTreeConnectionResource* connection =
blend_tree_resource.FindConnectionForSocket(node_resource, socket.m_name);
while (connection != nullptr) {
blend_tree_resource.DisconnectSockets(
blend_tree_resource.GetNode(connection->source_node_index),
connection->source_socket_name,
blend_tree_resource.GetNode(connection->target_node_index),
connection->target_socket_name);
while (iter != blend_tree_resource.GetConnections().end()) {
// TODO adjust for refactor
assert(false);
// AnimGraphConnectionResource& connection = *iter;
// if (connection.m_source_node == &node_resource
// && connection.m_source_socket == &socket) {
// iter = sGraphGresource.m_connections.erase(iter);
// } else {
// iter++;
// }
connection = blend_tree_resource.FindConnectionForSocket(
node_resource,
socket.m_name);
}
}
@ -260,6 +250,12 @@ void AnimGraphEditorRenderSidebar(
}
}
void AnimGraphEditorClear() {
sGraphGresource.Clear();
sGraphGresource.m_blend_tree_resource.InitGraphConnectors();
sGraphGresource.m_graph_type_name = "BlendTree";
}
void AnimGraphEditorUpdate(ax::NodeEditor::EditorContext* context) {
ImGui::BeginMenuBar();
if (ImGui::Button("Save")) {
@ -268,16 +264,9 @@ void AnimGraphEditorUpdate(ax::NodeEditor::EditorContext* context) {
if (ImGui::Button("Load")) {
sGraphGresource.LoadFromFile("editor_graph.json");
sGraphLoadedThisFrame = true;
// for (size_t i = 0, n = sGraphGresource.m_nodes.size(); i < n; i++) {
// const AnimNodeResource& node_resource = sGraphGresource.m_nodes[i];
// ImNodes::SetNodeGridSpacePos(
// i,
// ImVec2(node_resource.m_position[0], node_resource.m_position[1]));
// }
}
if (ImGui::Button("Clear")) {
sGraphGresource.Clear();
AnimGraphEditorClear();
}
char graph_name_buffer[256];
memset(graph_name_buffer, 0, sizeof(graph_name_buffer));
@ -323,7 +312,9 @@ void AnimGraphEditorUpdate(ax::NodeEditor::EditorContext* context) {
for (size_t j = 0, ni = node_inputs.size(); j < ni; j++) {
Socket& socket = node_inputs[j];
ax::NodeEditor::BeginPin(
GetNodeInputSocketId(static_cast<int>(node_id), static_cast<int>(j)),
NodeIndexAndSocketIndexToInputPinId(
static_cast<int>(node_id),
static_cast<int>(j)),
ax::NodeEditor::PinKind::Input);
ImGui::Text("%s", socket.m_name.c_str());
ax::NodeEditor::EndPin();
@ -335,13 +326,19 @@ void AnimGraphEditorUpdate(ax::NodeEditor::EditorContext* context) {
for (size_t j = 0, ni = node_outputs.size(); j < ni; j++) {
Socket& socket = node_outputs[j];
ax::NodeEditor::BeginPin(
GetNodeOutputSocketId(static_cast<int>(node_id), static_cast<int>(j)),
NodeIndexAndSocketIndexToOutputPinId(
static_cast<int>(node_id),
static_cast<int>(j)),
ax::NodeEditor::PinKind::Output);
ImGui::Text("%s", socket.m_name.c_str());
ax::NodeEditor::EndPin();
}
ax::NodeEditor::EndNode();
ImVec2 node_position = ax::NodeEditor::GetNodePosition(node_id);
node_resource->m_position[0] = node_position.x;
node_resource->m_position[1] = node_position.y;
}
int link_id = 0;
@ -366,14 +363,14 @@ void AnimGraphEditorUpdate(ax::NodeEditor::EditorContext* context) {
target_node_resource->m_socket_accessor->GetInputIndex(
connection_resource->target_socket_name.c_str());
int source_socket_id = GetNodeOutputSocketId(
int source_socket_pin_id = NodeIndexAndSocketIndexToOutputPinId(
static_cast<int>(connection_resource->source_node_index),
source_socket_index);
int target_socket_id = GetNodeInputSocketId(
int target_socket_pin_id = NodeIndexAndSocketIndexToInputPinId(
static_cast<int>(connection_resource->target_node_index),
target_socket_index);
ax::NodeEditor::Link(link_id++, source_socket_id, target_socket_id);
ax::NodeEditor::Link(link_id++, source_socket_pin_id, target_socket_pin_id);
}
#endif
@ -385,6 +382,56 @@ void AnimGraphEditorUpdate(ax::NodeEditor::EditorContext* context) {
if (ax::NodeEditor::QueryNewLink(&input_pin_id, &output_pin_id)) {
if (input_pin_id && output_pin_id) {
if (ax::NodeEditor::AcceptNewItem()) {
int source_node_index;
int source_node_socket_index;
OutputPinIdToNodeIndexAndSocketIndex(
input_pin_id.Get(),
&source_node_index,
&source_node_socket_index);
const AnimNodeResource* source_node =
sGraphGresource.m_blend_tree_resource.GetNode(source_node_index);
if (source_node->m_socket_accessor->m_outputs.size()
< source_node_socket_index) {
source_node_socket_index = -1;
}
int target_node_index;
int target_node_socket_index;
InputPinIdToNodeIndexAndSocketIndex(
output_pin_id.Get(),
&target_node_index,
&target_node_socket_index);
const AnimNodeResource* target_node =
sGraphGresource.m_blend_tree_resource.GetNode(target_node_index);
if (target_node->m_socket_accessor->m_inputs.size()
< target_node_socket_index) {
target_node_socket_index = -1;
}
if (source_node_socket_index == -1
|| target_node_socket_index == -1) {
ax::NodeEditor::RejectNewItem();
} else {
const std::string& source_socket_name =
source_node->m_socket_accessor
->m_outputs[source_node_socket_index]
.m_name;
const std::string& target_socket_name =
target_node->m_socket_accessor
->m_inputs[target_node_socket_index]
.m_name;
sGraphGresource.m_blend_tree_resource.ConnectSockets(
source_node,
source_socket_name,
target_node,
target_socket_name);
}
}
}
}
@ -392,6 +439,64 @@ void AnimGraphEditorUpdate(ax::NodeEditor::EditorContext* context) {
ax::NodeEditor::EndCreate();
#endif
// Popup menu
{
const bool open_popup = ImGui::IsMouseReleased(ImGuiMouseButton_Right);
ImVec2 popup_mouse_position = ImGui::GetMousePos();
ax::NodeEditor::Suspend();
if (open_popup) {
ImGui::OpenPopup("add node");
}
ax::NodeEditor::Resume();
ax::NodeEditor::Suspend();
ImGui::PushStyleVar(ImGuiStyleVar_WindowPadding, ImVec2(8.f, 8.f));
if (ImGui::BeginPopup("add node")) {
std::string node_type_name = "";
if (ImGui::MenuItem("AnimSampler")) {
node_type_name = "AnimSampler";
}
if (ImGui::MenuItem("Blend2")) {
node_type_name = "Blend2";
}
if (ImGui::MenuItem("SpeedScale")) {
node_type_name = "SpeedScale";
}
if (ImGui::MenuItem("LockTranslationNode")) {
node_type_name = "LockTranslationNode";
}
if (ImGui::MenuItem("MathAddNode")) {
node_type_name = "MathAddNode";
}
if (ImGui::MenuItem("MathFloatToVec3Node")) {
node_type_name = "MathFloatToVec3Node";
}
if (ImGui::MenuItem("ConstScalarNode")) {
node_type_name = "ConstScalarNode";
}
if (node_type_name.empty()) {
AnimNodeResource* node_resource =
AnimNodeResourceFactory(node_type_name);
size_t node_id = sGraphGresource.m_blend_tree_resource.GetNumNodes();
ax::NodeEditor::SetNodePosition(node_id, popup_mouse_position);
sGraphGresource.m_blend_tree_resource.AddNode(node_resource);
}
ImGui::EndPopup();
}
ImGui::PopStyleVar();
ax::NodeEditor::Resume();
}
ax::NodeEditor::End();
sGraphLoadedThisFrame = false;

30
src/AnimGraph/AnimGraphEditor.h
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@ -33,10 +33,40 @@ SplitOutputAttributeId(int attribute_id, int* node_id, int* output_index) {
*output_index = (attribute_id >> 23) - 1;
}
inline int NodeIndexAndSocketIndexToInputPinId(
int node_index,
int input_socket_index) {
return node_index * 1000 + input_socket_index;
}
inline int NodeIndexAndSocketIndexToOutputPinId(
int node_index,
int output_socket_index) {
return node_index * 1000 + 500 + output_socket_index;
}
inline void InputPinIdToNodeIndexAndSocketIndex(
unsigned long input_pin_id,
int* node_index,
int* socket_index) {
*socket_index = input_pin_id % 1000;
*node_index = (input_pin_id - *socket_index) / 1000;
}
inline void OutputPinIdToNodeIndexAndSocketIndex(
unsigned long output_pin_id,
int* node_index,
int* socket_index) {
*socket_index = ((output_pin_id - 500) % 1000);
*node_index = (output_pin_id - *socket_index) / 1000;
}
void SyncTrackEditor(SyncTrack* sync_track);
void SkinnedMeshWidget(SkinnedMesh* skinned_mesh);
void AnimGraphEditorClear();
void AnimGraphEditorUpdate(ax::NodeEditor::EditorContext* context);
void LegacyAnimGraphEditorUpdate();

41
src/AnimGraph/AnimGraphResource.cc
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@ -323,11 +323,13 @@ static bool sAnimGraphResourceBlendTreeFromJson(
}
// Graph outputs
const json& graph_outputs = json_data["nodes"][0]["inputs"];
for (const auto& graph_output : graph_outputs) {
AnimNodeResource* graph_node = blend_tree_resource.GetNode(0);
graph_node->m_socket_accessor->m_inputs.push_back(
sJsonToSocket(graph_output));
if (json_data["nodes"][0].contains("inputs")) {
const json& graph_outputs = json_data["nodes"][0]["inputs"];
for (const auto& graph_output : graph_outputs) {
AnimNodeResource* graph_node = blend_tree_resource.GetNode(0);
graph_node->m_socket_accessor->m_inputs.push_back(
sJsonToSocket(graph_output));
}
}
// Graph inputs (optional)
@ -573,6 +575,33 @@ bool BlendTreeResource::IsConnectionValid(
return true;
}
const BlendTreeConnectionResource* BlendTreeResource::FindConnectionForSocket(
const AnimNodeResource* node,
const std::string& socket_name) const {
int node_index = GetNodeIndex(node);
std::vector<BlendTreeConnectionResource>::const_iterator connection_iter =
std::find_if(
m_connections.begin(),
m_connections.end(),
[node_index,
socket_name](const BlendTreeConnectionResource& connection) {
if ((connection.source_node_index == node_index
&& connection.source_socket_name == socket_name)
|| (connection.target_node_index == node_index
&& connection.target_socket_name == socket_name)) {
return true;
}
return false;
});
if (connection_iter != m_connections.end()) {
return &*connection_iter;
}
return nullptr;
}
void BlendTreeResource::UpdateTreeTopologyInfo() {
// TODO: Updating eval order and subtrees may get slow with many nodes. An
// iterative approach would scale better. But let's leave that optimization
@ -640,6 +669,8 @@ void BlendTreeResource::UpdateNodeSubtrees() {
}
bool AnimGraphResource::LoadFromFile(const char* filename) {
Clear();
std::ifstream input_file;
input_file.open(filename);
std::stringstream buffer;

13
src/AnimGraph/AnimGraphResource.h
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@ -154,11 +154,16 @@ struct BlendTreeResource {
const AnimNodeResource* target_node,
const std::string& target_socket_name) const;
const BlendTreeConnectionResource* FindConnectionForSocket(
const AnimNodeResource* node,
const std::string& socket_name) const;
bool IsSocketConnected(
const AnimNodeResource* source_node,
const std::string& socket_name) {
assert(false && "Not yet implemented");
return false;
const AnimNodeResource* node,
const std::string& socket_name) const {
const BlendTreeConnectionResource* connection =
FindConnectionForSocket(node, socket_name);
return connection != nullptr;
}
std::vector<Socket*> GetConstantNodeInputs(

1
src/main.cc
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@ -561,6 +561,7 @@ int main() {
AnimData anim_graph_output;
anim_graph_output.m_local_matrices.resize(
skinned_mesh.m_skeleton.num_soa_joints());
AnimGraphEditorClear();
state.time.factor = 1.0f;

40
tests/AnimGraphEditorTests.cc Normal file
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@ -0,0 +1,40 @@
#include "AnimGraph/AnimGraphEditor.h"
#include "catch.hpp"
TEST_CASE("Node Socket To InputPin Conversion", "[animGraphEditor]") {
int node_index = 321;
int socket_index = 221;
long socket_id;
socket_id = NodeIndexAndSocketIndexToInputPinId(node_index, socket_index);
int node_index_resolved;
int socket_index_resolved;
InputPinIdToNodeIndexAndSocketIndex(
socket_id,
&node_index_resolved,
&socket_index_resolved);
CHECK(node_index == node_index_resolved);
CHECK(socket_index == socket_index_resolved);
}
TEST_CASE("Node Socket To OutputPin Conversion", "[animGraphEditor]") {
int node_index = 321;
int socket_index = 221;
long socket_id;
socket_id = NodeIndexAndSocketIndexToOutputPinId(node_index, socket_index);
int node_index_resolved;
int socket_index_resolved;
OutputPinIdToNodeIndexAndSocketIndex(
socket_id,
&node_index_resolved,
&socket_index_resolved);
CHECK(node_index == node_index_resolved);
CHECK(socket_index == socket_index_resolved);
}