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Texture-based round corners: Make FIXME consistent so they can be grepped. Tidying and added notes of things to fix.

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This commit is contained in:
omar
2019-11-18 14:41:02 +01:00
committed by ocornut
parent fbc6bce06b
commit d81c5cbae3
5 changed files with 103 additions and 106 deletions
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148
imgui_demo.cpp
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@ -257,94 +257,108 @@ static void GetVtxIdxDelta(ImDrawList* dl, int* vtx, int *idx)
idx_o = idx_n;
}
// https://github.com/ocornut/imgui/issues/1962
// FIXME-ROUNDCORNERS: Sizes aren't matching.
// FIXME-ROUNDCORNERS: Lift the RoundCornersMaxSize limitation, fallback on existing renderer.
// FIXME-ROUNDCORNERS: Work on reducing filtrate for stroked shapes (may need to trade some cpu/vtx to reduce fill-rate for e.g. simple stroked circle) > https://github.com/ocornut/imgui/issues/1962#issuecomment-411507917
// FIXME-ROUNDCORNERS: Figure out how to support multiple thickness, might hard-code common steps (1.0, 1.5, 2.0, 3.0), not super satisfactory but may be best
// FIXME-ROUNDCORNERS: AddCircle* API relying on num_segments may need rework, might obsolete this parameter, or make it 0 default and rely on automatic subdivision similar to style.CurveTessellationTol for Bezier
// FIXME-ROUNDCORNERS: Intentional "low segment count" shapes (e.g. hexagon) currently achieved with AddCircle may need a new API (AddNgon?)
static void TestTextureBasedRender()
{
ImGuiIO& io = ImGui::GetIO();
ImGuiStyle& style = ImGui::GetStyle();
ImGui::TextUnformatted("Press SHIFT to toggle quads (hold to see them).");
ImGui::TextUnformatted(io.KeyShift ? "SHIFT ON -- Rasterized quad circle! w00t! OPTIMIZATION!"
: "SHIFT OFF -- Regular, boring circle with PathArcToFast.");
ImGui::Begin("tex_round_corners");
ImGui::Text("Hold SHIFT to toggle (%s)", io.KeyShift ? "SHIFT ON -- Using textures." : "SHIFT OFF -- Old method.");
static float radius = io.Fonts->RoundCornersMaxSize * 0.5f;
ImGui::SliderFloat("radius", &radius, 0.0f, (float)io.Fonts->RoundCornersMaxSize, "%.0f");
ImGui::BeginGroup();
static int segments = 20;
ImGui::PushItemWidth(120);
ImGui::SliderInt("segments", &segments, 3, 100);
ImGui::PopItemWidth();
int vtx = 0;
int idx = 0;
ImDrawList* dl = ImGui::GetWindowDrawList();
ImGui::SliderFloat("radius", &radius, 0.0f, (float)io.Fonts->RoundCornersMaxSize, "%.0f");
int vtx_n = 0;
int idx_n = 0;
ImDrawList* draw_list = ImGui::GetWindowDrawList();
{
ImGui::Button("##1", ImVec2(200, 200));
GetVtxIdxDelta(dl, &vtx, &idx);
ImVec2 min = ImGui::GetItemRectMin();
ImVec2 size = ImGui::GetItemRectSize();
dl->AddCircleFilled(ImVec2(min.x + size.x * 0.5f, min.y + size.y * 0.5f), radius, 0xFFFF00FF, segments);
GetVtxIdxDelta(dl, &vtx, &idx);
ImGui::Text("AddCircleFilled\n %d vtx, %d idx", vtx, idx);
ImGui::BeginGroup();
ImGui::PushItemWidth(120);
ImGui::SliderInt("segments", &segments, 3, 100);
ImGui::PopItemWidth();
{
ImGui::Button("##1", ImVec2(200, 200));
GetVtxIdxDelta(draw_list, &vtx_n, &idx_n);
ImVec2 min = ImGui::GetItemRectMin();
ImVec2 size = ImGui::GetItemRectSize();
draw_list->AddCircleFilled(ImVec2(min.x + size.x * 0.5f, min.y + size.y * 0.5f), radius, IM_COL32(255,0,255,255), segments);
GetVtxIdxDelta(draw_list, &vtx_n, &idx_n);
ImGui::Text("AddCircleFilled\n %d vtx, %d idx", vtx_n, idx_n);
}
{
ImGui::Button("##2", ImVec2(200, 200));
GetVtxIdxDelta(draw_list, &vtx_n, &idx_n);
ImVec2 min = ImGui::GetItemRectMin();
ImVec2 size = ImGui::GetItemRectSize();
draw_list->AddCircle(ImVec2(min.x + size.x * 0.5f, min.y + size.y * 0.5f), radius, IM_COL32(255,0,255,255), segments);
GetVtxIdxDelta(draw_list, &vtx_n, &idx_n);
ImGui::Text("AddCircle\n %d vtx, %d idx", vtx_n, idx_n);
}
ImGui::EndGroup();
}
{
ImGui::Button("##2", ImVec2(200, 200));
GetVtxIdxDelta(dl, &vtx, &idx);
ImVec2 min = ImGui::GetItemRectMin();
ImVec2 size = ImGui::GetItemRectSize();
dl->AddCircle(ImVec2(min.x + size.x * 0.5f, min.y + size.y * 0.5f), radius, 0xFFFF00FF, segments);
GetVtxIdxDelta(dl, &vtx, &idx);
ImGui::Text("AddCircle\n %d vtx, %d idx", vtx, idx);
}
ImGui::EndGroup();
ImGui::SameLine();
ImGui::BeginGroup();
static bool tl = true, tr = true, bl = true, br = true;
ImGui::Checkbox("TL", &tl);
ImGui::SameLine(0, 12);
ImGui::Checkbox("TR", &tr);
ImGui::SameLine(0, 12);
ImGui::Checkbox("BL", &bl);
ImGui::SameLine(0, 12);
ImGui::Checkbox("BR", &br);
ImDrawFlags flags = 0;
flags |= tl ? ImDrawFlags_RoundCornersTopLeft : 0;
flags |= tr ? ImDrawFlags_RoundCornersTopRight : 0;
flags |= bl ? ImDrawFlags_RoundCornersBottomLeft : 0;
flags |= br ? ImDrawFlags_RoundCornersBottomRight : 0;
if (flags == 0)
flags |= ImDrawFlags_RoundCornersNone;
{
ImGui::Button("", ImVec2(200, 200));
ImVec2 r_min = ImGui::GetItemRectMin();
ImVec2 r_max = ImGui::GetItemRectMax();
ImGui::BeginGroup();
GetVtxIdxDelta(dl, &vtx, &idx);
dl->AddRectFilled(r_min, r_max, 0xFFFF00FF, radius, flags);
GetVtxIdxDelta(dl, &vtx, &idx);
ImGui::Text("AddRectFilled\n %d vtx, %d idx", vtx, idx);
static ImDrawFlags corner_flags = ImDrawFlags_RoundCornersAll;
ImGui::CheckboxFlags("TL", (unsigned int*)&corner_flags, ImDrawFlags_RoundCornersTopLeft);
ImGui::SameLine();
ImGui::CheckboxFlags("TR", (unsigned int*)&corner_flags, ImDrawFlags_RoundCornersTopRight);
ImGui::SameLine();
ImGui::CheckboxFlags("BL", (unsigned int*)&corner_flags, ImDrawFlags_RoundCornersBottomLeft);
ImGui::SameLine();
ImGui::CheckboxFlags("BR", (unsigned int*)&corner_flags, ImDrawFlags_RoundCornersBottomRight);
{
ImGui::Button("##3", ImVec2(200, 200));
ImVec2 r_min = ImGui::GetItemRectMin();
ImVec2 r_max = ImGui::GetItemRectMax();
GetVtxIdxDelta(draw_list, &vtx_n, &idx_n);
draw_list->AddRectFilled(r_min, r_max, IM_COL32(255,0,255,255), radius, corner_flags ? corner_flags : ImDrawFlags_RoundCornersNone);
GetVtxIdxDelta(draw_list, &vtx_n, &idx_n);
ImGui::Text("AddRectFilled\n %d vtx, %d idx", vtx_n, idx_n);
}
{
ImGui::Button("##4", ImVec2(200, 200));
ImVec2 r_min = ImGui::GetItemRectMin();
ImVec2 r_max = ImGui::GetItemRectMax();
GetVtxIdxDelta(draw_list, &vtx_n, &idx_n);
draw_list->AddRect(r_min, r_max, IM_COL32(255,0,255,255), radius, corner_flags);
GetVtxIdxDelta(draw_list, &vtx_n, &idx_n);
ImGui::Text("AddRect\n %d vtx, %d idx", vtx_n, idx_n);
}
ImGui::EndGroup();
}
{
ImGui::Button("", ImVec2(200, 200));
ImVec2 r_min = ImGui::GetItemRectMin();
ImVec2 r_max = ImGui::GetItemRectMax();
GetVtxIdxDelta(dl, &vtx, &idx);
dl->AddRect(r_min, r_max, 0xFFFF00FF, radius, flags);
GetVtxIdxDelta(dl, &vtx, &idx);
ImGui::Text("AddRect\n %d vtx, %d idx", vtx, idx);
}
ImGui::EndGroup();
ImGui::Separator();
ImGui::Text("Style");
ImGui::SliderFloat("FrameRounding", &style.FrameRounding, 0.0f, 100.0f, "%.0f");
ImGui::SliderFloat("WindowRounding", &style.WindowRounding, 0.0f, 100.0f, "%.0f");
// Show atlas
ImGui::Text("Atlas");
ImFontAtlas* atlas = ImGui::GetIO().Fonts;
ImGui::Image(atlas->TexID, ImVec2((float)atlas->TexWidth, (float)atlas->TexHeight), ImVec2(0, 0), ImVec2(1, 1), ImColor(255, 255, 255, 255), ImColor(255, 255, 255, 128));
ImGui::End();
}
//-----------------------------------------------------------------------------