luboslenco
54 lines
2.4 KiB
C
54 lines
2.4 KiB
C
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#include "../global.h"
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void util_stencil_transform() {
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if (g_context->brush_stencil_image != NULL && keymap_shortcut(any_map_get(g_keymap, "stencil_transform"), SHORTCUT_TYPE_DOWN)) {
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rect_t *r = ui_base_get_brush_stencil_rect();
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if (mouse_started("left")) {
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g_context->brush_stencil_scaling = ui_base_hit_rect(mouse_x, mouse_y, r->x - 8, r->y - 8, 16, 16) ||
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ui_base_hit_rect(mouse_x, mouse_y, r->x - 8, r->h + r->y - 8, 16, 16) ||
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ui_base_hit_rect(mouse_x, mouse_y, r->w + r->x - 8, r->y - 8, 16, 16) ||
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ui_base_hit_rect(mouse_x, mouse_y, r->w + r->x - 8, r->h + r->y - 8, 16, 16);
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f32 cosa = math_cos(-g_context->brush_stencil_angle);
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f32 sina = math_sin(-g_context->brush_stencil_angle);
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f32 ox = 0;
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f32 oy = -r->h / 2.0;
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f32 x = ox * cosa - oy * sina;
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f32 y = ox * sina + oy * cosa;
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x += r->x + r->w / 2.0;
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y += r->y + r->h / 2.0;
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g_context->brush_stencil_rotating = ui_base_hit_rect(mouse_x, mouse_y, math_floor(x - 16), math_floor(y - 16), 32, 32);
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}
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f32 _scale = g_context->brush_stencil_scale;
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if (mouse_down("left")) {
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if (g_context->brush_stencil_scaling) {
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i32 mult = mouse_x > r->x + r->w / 2 ? 1 : -1;
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g_context->brush_stencil_scale += mouse_movement_x / 400.0 * mult;
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}
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else if (g_context->brush_stencil_rotating) {
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f32 gizmo_x = r->x + r->w / 2.0;
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f32 gizmo_y = r->y + r->h / 2.0;
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g_context->brush_stencil_angle = -math_atan2(mouse_y - gizmo_y, mouse_x - gizmo_x) - math_pi() / 2.0;
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}
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else {
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g_context->brush_stencil_x += mouse_movement_x / (float)base_w();
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g_context->brush_stencil_y += mouse_movement_y / (float)base_h();
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}
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}
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else {
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g_context->brush_stencil_scaling = false;
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}
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if (mouse_wheel_delta != 0) {
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g_context->brush_stencil_scale -= mouse_wheel_delta / 10.0;
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}
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// Center after scale
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f32 ratio = base_h() / (float)g_context->brush_stencil_image->height;
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f32 old_w = _scale * g_context->brush_stencil_image->width * ratio;
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f32 new_w = g_context->brush_stencil_scale * g_context->brush_stencil_image->width * ratio;
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f32 old_h = _scale * base_h();
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f32 new_h = g_context->brush_stencil_scale * base_h();
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g_context->brush_stencil_x += (old_w - new_w) / (float)base_w() / 2.0;
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g_context->brush_stencil_y += (old_h - new_h) / (float)base_h() / 2.0;
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}
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}
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