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Blend nodes added

This commit is contained in:
Peter Schulman 2023-05-03 08:52:53 +03:00
parent a27fba8cb6
commit 151ed01f69
2 changed files with 82 additions and 3 deletions
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12
demo/common/node_editor.c
View File

@ -86,6 +86,7 @@ void* node_editor_eval_connected(struct node *node, int inputSlot);
#include "nodeeditor/node_type_color.c"
#include "nodeeditor/node_type_float.c"
#include "nodeeditor/node_type_output.c"
#include "nodeeditor/node_type_blend.c"
static void
node_editor_push(struct node_editor *editor, struct node *node)
@ -180,12 +181,14 @@ int in_count, int out_count)
struct node *node = NULL;
if ((nk_size)editor->node_count < NK_LEN(editor->node_buf))
{
{
/* node_buf has unused slots */
node = malloc(nodeSize);
editor->node_buf[editor->node_count++] = node;
node->ID = IDs++;
}
else {
/* check for freed up slots in node_buf */
for (i = 0; i < editor->node_count; i++)
{
if (editor->node_buf[i] == NULL) {
@ -229,7 +232,8 @@ int in_count, int out_count)
}
void *
node_editor_eval_connected(struct node* node, int inputSlot) {
node_editor_eval_connected(struct node* node, int inputSlot)
{
NK_ASSERT(node->inputs[inputSlot].isConnected);
return node->inputs[inputSlot].connectedNode->evalFunc(node->inputs[inputSlot].connectedNode, node->inputs[inputSlot].connectedSlot);
}
@ -240,7 +244,7 @@ node_editor_link(struct node_editor *editor, struct node *in_node, int in_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 = NULL;
if ((nk_size)editor->link_count < NK_LEN(editor->links))
link = &editor->links[editor->link_count++];
else {
@ -517,6 +521,8 @@ node_editor_main(struct nk_context *ctx)
node_color_create(nodedit, in->mouse.pos);
if (nk_contextual_item_label(ctx, "Add Float node", NK_TEXT_CENTERED))
node_float_create(nodedit, in->mouse.pos);
if (nk_contextual_item_label(ctx, "Add Blend Node", NK_TEXT_CENTERED))
node_blend_create(nodedit, in->mouse.pos);
if (nk_contextual_item_label(ctx, grid_option[nodedit->show_grid],NK_TEXT_CENTERED))
nodedit->show_grid = !nodedit->show_grid;
nk_contextual_end(ctx);

73
demo/common/nodeeditor/node_type_blend.c Normal file
View File

@ -0,0 +1,73 @@
struct node_type_blend {
struct node node;
struct nk_colorf inputVal[2];
struct nk_colorf outputVal;
float blendVal;
};
static struct nk_colorf *node_blend_eval(struct node *node, int oIndex) {
struct node_type_blend* blendNode = (struct node_type_blend*)node;
return &blendNode->outputVal;
}
static void node_blend_display(struct nk_context *ctx, struct node *node) {
struct node_type_blend *blendNode = (struct node_type_blend*)node;
const struct nk_colorf blank = {0.0f, 0.0f, 0.0f, 0.0f};
float blendAmnt;
int i;
nk_layout_row_dynamic(ctx, 25, 1);
for (i = 0; i < (int)NK_LEN(blendNode->inputVal); i++){
if(node->inputs[i].isConnected) {
blendNode->inputVal[i] = *(struct nk_colorf*)node_editor_eval_connected(node, i);
}
else {
blendNode->inputVal[i] = blank;
}
nk_button_color(ctx, nk_rgba_cf(blendNode->inputVal[i]));
}
if (node->inputs[2].isConnected) {
blendAmnt = *(float*)node_editor_eval_connected(node, 2);
blendAmnt = nk_propertyf(ctx, "#Blend", blendAmnt, blendAmnt, blendAmnt, 0.01f, 0.01f);
}
else {
blendNode->blendVal = nk_propertyf(ctx, "#Blend", 0.0f, blendNode->blendVal, 1.0f, 0.01f, 0.01f);
blendAmnt = blendNode->blendVal;
}
if(node->inputs[0].isConnected && node->inputs[1].isConnected) {
blendNode->outputVal.r = blendNode->inputVal[0].r * blendAmnt + blendNode->inputVal[1].r * (1.0f-blendAmnt);
blendNode->outputVal.g = blendNode->inputVal[0].g * blendAmnt + blendNode->inputVal[1].g * (1.0f-blendAmnt);
blendNode->outputVal.b = blendNode->inputVal[0].b * blendAmnt + blendNode->inputVal[1].b * (1.0f-blendAmnt);
blendNode->outputVal.a = blendNode->inputVal[0].a * blendAmnt + blendNode->inputVal[1].a * (1.0f-blendAmnt);
}
else {
blendNode->outputVal = blank;
}
}
void node_blend_create(struct node_editor *editor, struct nk_vec2 position) {
struct node_type_blend* blendNode = (struct node_type_blend*)node_editor_add(editor, sizeof(struct node_type_blend), "Blend", nk_rect(position.x, position.y, 180, 130), 3, 1);
if (blendNode) {
const struct nk_colorf blank = {0.0f, 0.0f, 0.0f, 0.0f};
int i;
for (i = 0; i < (int)NK_LEN(blendNode->inputVal); i++)
blendNode->node.inputs[i].type = fColor;
blendNode->node.outputs[0].type = fColor;
blendNode->node.slot_spacing.in_top = 42.0f;
blendNode->node.slot_spacing.in_space = 29.0f;
for (i = 0; i < (int)NK_LEN(blendNode->inputVal); i++)
blendNode->inputVal[i] = blank;
blendNode->outputVal = blank;
blendNode->blendVal = 0.5f;
blendNode->node.displayFunc = node_blend_display;
blendNode->node.evalFunc = (void*(*)(struct node*, int)) node_blend_eval;
}
}