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Allow only one input per input slot

This commit is contained in:
Peter Schulman 2023-04-11 09:23:53 +03:00
parent da7cf400c3
commit 3d2e410d78
1 changed files with 13 additions and 6 deletions
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19
demo/common/node_editor.c
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@ -132,6 +132,11 @@ node_editor_add(struct node_editor *editor, const char *name, struct nk_rect bou
node->inputs = (struct node_connector*)malloc(node->input_count * sizeof(struct node_connector));
node->outputs = (struct node_connector*)malloc(node->output_count * sizeof(struct node_connector));
for (int i = 0; i < node->input_count; i++)
node->inputs[i].isConnected = nk_false;
for (i = 0; i < node->output_count; i++)
node->outputs[i].isConnected = nk_false;
node->color = col;
node->bounds = bounds;
strcpy(node->name, name);
@ -142,9 +147,12 @@ static void
node_editor_link(struct node_editor *editor, struct node *in_node, int in_slot,
struct node *out_node, int out_slot)
{
/* Confusingly, in and out nodes/slots here refer to the inputs and outputs OF THE LINK ITSELF, not the nodes */
struct node_link *link;
NK_ASSERT((nk_size)editor->link_count < NK_LEN(editor->links));
link = &editor->links[editor->link_count++];
out_node->inputs[out_slot].isConnected = nk_true;
in_node->outputs[in_slot].isConnected = nk_true;
link->input_node = in_node;
link->input_slot = in_slot;
link->output_node = out_node;
@ -160,8 +168,8 @@ node_editor_init(struct node_editor *editor)
node_editor_add(editor, "Source", nk_rect(40, 10, 180, 220), nk_rgb(255, 0, 0), 0, 1);
node_editor_add(editor, "Source", nk_rect(40, 260, 180, 220), nk_rgb(0, 255, 0), 0, 1);
node_editor_add(editor, "Combine", nk_rect(400, 100, 180, 220), nk_rgb(0,0,255), 2, 2);
node_editor_link(editor, node_editor_find(&nodeEditor, 0), 0, node_editor_find(&nodeEditor, 2), 0);
node_editor_link(editor, node_editor_find(&nodeEditor, 1), 0, node_editor_find(&nodeEditor, 2), 1);
//node_editor_link(editor, node_editor_find(&nodeEditor, 0), 0, node_editor_find(&nodeEditor, 2), 0);
//node_editor_link(editor, node_editor_find(&nodeEditor, 1), 0, node_editor_find(&nodeEditor, 2), 1);
editor->show_grid = nk_true;
}
@ -286,11 +294,10 @@ node_editor_main(struct nk_context *ctx)
/* (Create link) */
if (nk_input_is_mouse_released(in, NK_BUTTON_LEFT) &&
nk_input_is_mouse_hovering_rect(in, circle) &&
nodedit->linking.active && nodedit->linking.node != it) {
nodedit->linking.active &&
nodedit->linking.node != it &&
it->inputs[n].isConnected != nk_true) {
nodedit->linking.active = nk_false;
nodedit->linking.node->outputs[nodedit->linking.input_slot].isConnected = nk_true;
it->inputs[n].isConnected = nk_true;
node_editor_link(nodedit, nodedit->linking.node,
nodedit->linking.input_slot, it, n);