Advertisement
Not a member of Pastebin yet?
Sign Up,
it unlocks many cool features!
- void ImDrawList::AddTriangleFilledMultiColor(const ImVec2& a, const ImVec2& b, const ImVec2& c, ImU32 col_a, ImU32 col_b, ImU32 col_c)
- {
- if (((col_a | col_b | col_c) >> 24) == 0)
- return;
- const ImVec2 uv = GImGui->FontTexUvWhitePixel;
- PrimReserve(3, 3);
- PrimWriteIdx((ImDrawIdx)(_VtxCurrentIdx)); PrimWriteIdx((ImDrawIdx)(_VtxCurrentIdx + 1)); PrimWriteIdx((ImDrawIdx)(_VtxCurrentIdx + 2));
- PrimWriteVtx(a, uv, col_a);
- PrimWriteVtx(b, uv, col_b);
- PrimWriteVtx(c, uv, col_c);
- }
- bool ColorPicker(const char* label, ImColor* color)
- {
- static const float HUE_PICKER_WIDTH = 20.0f;
- static const float CROSSHAIR_SIZE = 7.0f;
- static const ImVec2 SV_PICKER_SIZE = ImVec2(200, 200);
- bool value_changed = false;
- ImDrawList* draw_list = ImGui::GetWindowDrawList();
- ImVec2 picker_pos = ImGui::GetCursorScreenPos();
- ImColor colors[] = {ImColor(255, 0, 0),
- ImColor(255, 255, 0),
- ImColor(0, 255, 0),
- ImColor(0, 255, 255),
- ImColor(0, 0, 255),
- ImColor(255, 0, 255),
- ImColor(255, 0, 0)};
- for (int i = 0; i < 6; ++i)
- {
- draw_list->AddRectFilledMultiColor(
- ImVec2(picker_pos.x + SV_PICKER_SIZE.x + 10, picker_pos.y + i * (SV_PICKER_SIZE.y / 6)),
- ImVec2(picker_pos.x + SV_PICKER_SIZE.x + 10 + HUE_PICKER_WIDTH,
- picker_pos.y + (i + 1) * (SV_PICKER_SIZE.y / 6)),
- colors[i],
- colors[i],
- colors[i + 1],
- colors[i + 1]);
- }
- float hue, saturation, value;
- ImGui::ColorConvertRGBtoHSV(
- color->Value.x, color->Value.y, color->Value.z, hue, saturation, value);
- auto hue_color = ImColor::HSV(hue, 1, 1);
- draw_list->AddLine(
- ImVec2(picker_pos.x + SV_PICKER_SIZE.x + 8, picker_pos.y + hue * SV_PICKER_SIZE.y),
- ImVec2(picker_pos.x + SV_PICKER_SIZE.x + 12 + HUE_PICKER_WIDTH,
- picker_pos.y + hue * SV_PICKER_SIZE.y),
- ImColor(255, 255, 255));
- draw_list->AddTriangleFilledMultiColor(picker_pos,
- ImVec2(picker_pos.x + SV_PICKER_SIZE.x, picker_pos.y + SV_PICKER_SIZE.y),
- ImVec2(picker_pos.x, picker_pos.y + SV_PICKER_SIZE.y),
- ImColor(0, 0, 0),
- hue_color,
- ImColor(255, 255, 255));
- float x = saturation * value;
- ImVec2 p(picker_pos.x + x * SV_PICKER_SIZE.x, picker_pos.y + value * SV_PICKER_SIZE.y);
- draw_list->AddLine(ImVec2(p.x - CROSSHAIR_SIZE, p.y), ImVec2(p.x - 2, p.y), ImColor(255, 255, 255));
- draw_list->AddLine(ImVec2(p.x + CROSSHAIR_SIZE, p.y), ImVec2(p.x + 2, p.y), ImColor(255, 255, 255));
- draw_list->AddLine(ImVec2(p.x, p.y + CROSSHAIR_SIZE), ImVec2(p.x, p.y + 2), ImColor(255, 255, 255));
- draw_list->AddLine(ImVec2(p.x, p.y - CROSSHAIR_SIZE), ImVec2(p.x, p.y - 2), ImColor(255, 255, 255));
- ImGui::InvisibleButton("saturation_value_selector", SV_PICKER_SIZE);
- if (ImGui::IsItemHovered())
- {
- ImVec2 mouse_pos_in_canvas = ImVec2(
- ImGui::GetIO().MousePos.x - picker_pos.x, ImGui::GetIO().MousePos.y - picker_pos.y);
- if (ImGui::GetIO().MouseDown[0])
- {
- mouse_pos_in_canvas.x =
- ImMin(mouse_pos_in_canvas.x, mouse_pos_in_canvas.y);
- value = mouse_pos_in_canvas.y / SV_PICKER_SIZE.y;
- saturation = value == 0 ? 0 : (mouse_pos_in_canvas.x / SV_PICKER_SIZE.x) / value;
- value_changed = true;
- }
- }
- ImGui::SetCursorScreenPos(ImVec2(picker_pos.x + SV_PICKER_SIZE.x + 10, picker_pos.y));
- ImGui::InvisibleButton("hue_selector", ImVec2(HUE_PICKER_WIDTH, SV_PICKER_SIZE.y));
- if (ImGui::IsItemHovered())
- {
- if (ImGui::GetIO().MouseDown[0])
- {
- hue = ((ImGui::GetIO().MousePos.y - picker_pos.y) / SV_PICKER_SIZE.y);
- value_changed = true;
- }
- }
- *color = ImColor::HSV(hue, saturation, value);
- return value_changed | ImGui::ColorEdit3(label, &color->Value.x);
- }
Advertisement
Add Comment
Please, Sign In to add comment
Advertisement