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feat: implement miter joins

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This commit is contained in:
Froxwin
2026-03-14 14:37:03 +05:30
parent e054fc4fe7
commit af6b0c4d30
7 changed files with 183 additions and 112 deletions
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42
src/application/applicationstate.c
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@@ -95,9 +95,9 @@ static void canvas_onclick(GtkGestureClick* gesture, int n_press, double x,
vektor_appstate_canvas_click(state, normalized_coords.x,
normalized_coords.y);
// technically there are cases when a click would not result in change of the geometry
// but this is more concise then writing it inside that function
// a bunch of times and burder future click dispatches with
// technically there are cases when a click would not result in change of
// the geometry but this is more concise then writing it inside that
// function a bunch of times and burder future click dispatches with
// handling this signal
vektor_canvas_geometry_changed(state->renderInfo);
}
@@ -218,7 +218,7 @@ begin_click_dispatch:
for (size_t i = 0; i < state->shapeBuffer->count; i++) {
VektorBBox bbox = vektor_primitive_get_bbox(
state->shapeBuffer->shapes[i].primitive);
// expand the bbox a little so its not painful to
// try to grab handles located on the border of said bbox
bbox = vektor_bbox_expand(bbox, 0.02);
@@ -243,26 +243,25 @@ void vektor_appstate_canvas_drag_begin(GtkGestureDrag* gesture, gdouble x,
int widget_w = gtk_widget_get_width(widget);
int widget_h = gtk_widget_get_height(widget);
V2 position =
(V2){(2 * (x / widget_w)) - 1, 1 - (2 * (y / widget_h))};
position =
m33_transform(m33_inverse(state->renderInfo->canvasMat), (V2){position.x, position.y});
V2 position = (V2){(2 * (x / widget_w)) - 1, 1 - (2 * (y / widget_h))};
position = m33_transform(m33_inverse(state->renderInfo->canvasMat),
(V2){position.x, position.y});
if(state->selectedShape != NULL) {
if (state->selectedShape != NULL) {
VektorShape* selectedShape = state->selectedShape;
// get selected shape's handles and check
// if we click any of them
for(size_t i = 0; i < selectedShape->handleCount; i++) {
VektorBBox bbox = vektor_shape_get_handle_bbox(selectedShape->handles[i]);
if(vektor_bbox_isinside(bbox, position)) {
// clicked inside handle
for (size_t i = 0; i < selectedShape->handleCount; i++) {
VektorBBox bbox =
vektor_shape_get_handle_bbox(selectedShape->handles[i]);
if (vektor_bbox_isinside(bbox, position)) {
// clicked inside handle
state->heldHandleIndex = i;
vektor_canvas_geometry_changed(state->renderInfo);
break;
}
}
}
}
@@ -282,25 +281,26 @@ void vektor_appstate_canvas_drag_update(GtkGestureDrag* gesture, gdouble x,
int widget_h = gtk_widget_get_height(widget);
V2 position = (V2){(2 * ((x + start_x) / widget_w)) - 1,
1 - (2 * ((y + start_y) / widget_h))};
position =
m33_transform(m33_inverse(state->renderInfo->canvasMat), (V2){position.x, position.y});
1 - (2 * ((y + start_y) / widget_h))};
position = m33_transform(m33_inverse(state->renderInfo->canvasMat),
(V2){position.x, position.y});
// drag handle if selected
if(state->selectedShape != NULL && state->heldHandleIndex != -1) {
if (state->selectedShape != NULL && state->heldHandleIndex != -1) {
state->selectedShape->handles[state->heldHandleIndex] = position;
vektor_shape_handles_updated(state->selectedShape, &state->heldHandleIndex);
vektor_shape_handles_updated(state->selectedShape,
&state->heldHandleIndex);
vektor_canvas_geometry_changed(state->renderInfo);
}
}
void vektor_appstate_canvas_drag_end(GtkGestureDrag* gesture, gdouble x,
gdouble y, gpointer user_data) {
gdouble y, gpointer user_data) {
VektorAppState* state = (VektorAppState*)user_data;
// if we were dragging a handle
if(state->selectedShape != NULL && state->heldHandleIndex != -1) {
if (state->selectedShape != NULL && state->heldHandleIndex != -1) {
state->heldHandleIndex = -1; // ...then remove handle drag flag
vektor_canvas_geometry_changed(state->renderInfo);
}