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gradient text + box fill

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This commit is contained in:
Orange
2026-07-11 18:05:20 +03:00
parent 78d92a3c0f
commit 176f5b2aa1
9 changed files with 233 additions and 87 deletions
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source/hud/renderer_realizations/imgui_renderer.cpp
+42 -9
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@@ -28,7 +28,7 @@ namespace omath::hud
void ImguiHudRenderer::add_filled_polyline(const std::span<const Vector2<float>>& vertexes, const Color& color)
{
ImGui::GetBackgroundDrawList()->AddConvexPolyFilled(reinterpret_cast<const ImVec2*>(vertexes.data()),
static_cast<int>(vertexes.size()), color.to_im_color());
static_cast<int>(vertexes.size()), color.to_im_color());
}
void ImguiHudRenderer::add_rectangle(const Vector2<float>& min, const Vector2<float>& max, const Color& color)
@@ -42,30 +42,39 @@ namespace omath::hud
ImGui::GetBackgroundDrawList()->AddRectFilled(min.to_im_vec2(), max.to_im_vec2(), color.to_im_color());
}
void ImguiHudRenderer::add_circle(const Vector2<float>& center, const float radius, const Color& color,
const float thickness, const int segments)
void ImguiHudRenderer::add_gradient_rectangle(const Vector2<float>& min, const Vector2<float>& max,
const Gradient& gradient)
{
ImGui::GetBackgroundDrawList()->AddCircle(center.to_im_vec2(), radius, color.to_im_color(), segments, thickness);
ImGui::GetBackgroundDrawList()->AddRectFilledMultiColor(
min.to_im_vec2(), max.to_im_vec2(), gradient.top_left.to_im_color(), gradient.top_right.to_im_color(),
gradient.bottom_right.to_im_color(), gradient.bottom_left.to_im_color());
}
void ImguiHudRenderer::add_circle(const Vector2<float>& center, const float radius, const Color& color,
const float thickness, const int segments)
{
ImGui::GetBackgroundDrawList()->AddCircle(center.to_im_vec2(), radius, color.to_im_color(), segments,
thickness);
}
void ImguiHudRenderer::add_filled_circle(const Vector2<float>& center, const float radius, const Color& color,
const int segments)
const int segments)
{
ImGui::GetBackgroundDrawList()->AddCircleFilled(center.to_im_vec2(), radius, color.to_im_color(), segments);
}
void ImguiHudRenderer::add_arc(const Vector2<float>& center, const float radius, const float a_min, const float a_max,
const Color& color, const float thickness, const int segments)
void ImguiHudRenderer::add_arc(const Vector2<float>& center, const float radius, const float a_min,
const float a_max, const Color& color, const float thickness, const int segments)
{
ImGui::GetBackgroundDrawList()->PathArcTo(center.to_im_vec2(), radius, a_min, a_max, segments);
ImGui::GetBackgroundDrawList()->PathStroke(color.to_im_color(), ImDrawFlags_None, thickness);
}
void ImguiHudRenderer::add_image(const std::any& texture_id, const Vector2<float>& min, const Vector2<float>& max,
const Color& tint)
const Color& tint)
{
ImGui::GetBackgroundDrawList()->AddImage(std::any_cast<ImTextureID>(texture_id), min.to_im_vec2(),
max.to_im_vec2(), {0, 0}, {1, 1}, tint.to_im_color());
max.to_im_vec2(), {0, 0}, {1, 1}, tint.to_im_color());
}
void ImguiHudRenderer::add_text(const Vector2<float>& position, const Color& color, const std::string_view& text)
@@ -73,6 +82,30 @@ namespace omath::hud
ImGui::GetBackgroundDrawList()->AddText(position.to_im_vec2(), color.to_im_color(), text.data(),
text.data() + text.size());
}
void ImguiHudRenderer::add_gradient_text(const Vector2<float>& position, const Gradient& gradient,
const std::string_view& text)
{
auto* draw_list = ImGui::GetBackgroundDrawList();
const int vertex_start = draw_list->VtxBuffer.Size;
draw_list->AddText(position.to_im_vec2(), IM_COL32_WHITE, text.data(), text.data() + text.size());
const auto size = calc_text_size(text);
const float width = std::max(size.x, 1.f);
const float height = std::max(size.y, 1.f);
for (int i = vertex_start; i < draw_list->VtxBuffer.Size; ++i)
{
auto& vertex = draw_list->VtxBuffer[i];
const float x = std::clamp((vertex.pos.x - position.x) / width, 0.f, 1.f);
const float y = std::clamp((vertex.pos.y - position.y) / height, 0.f, 1.f);
const auto top = gradient.top_left.value() * (1.f - x) + gradient.top_right.value() * x;
const auto bottom = gradient.bottom_left.value() * (1.f - x) + gradient.bottom_right.value() * x;
const auto color = top * (1.f - y) + bottom * y;
const auto alpha = static_cast<int>(((vertex.col >> IM_COL32_A_SHIFT) & 0xff) * color.w);
vertex.col = IM_COL32(static_cast<int>(color.x * 255.f), static_cast<int>(color.y * 255.f),
static_cast<int>(color.z * 255.f), alpha);
}
}
[[nodiscard]]
Vector2<float> ImguiHudRenderer::calc_text_size(const std::string_view& text)
{