Overrides - Color grading - Moved UI to separate files
This commit is contained in:
parent
17aecb3693
commit
def4f9e9ea
4 changed files with 364 additions and 322 deletions
1
Makefile
1
Makefile
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@ -19,6 +19,7 @@ COMMON = \
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texture.cc \
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rendertarget.cc \
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camera.cc \
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colorgrading.cc \
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\
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filewatcher.cc \
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window.cc \
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327
colorgrading.cc
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327
colorgrading.cc
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@ -0,0 +1,327 @@
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#include "externals.hh"
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#include "colorgrading.hh"
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#define IMGUI_DEFINE_MATH_OPERATORS
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#include <imgui_internal.h>
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namespace ImGui {
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namespace {
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bool CGCModeButton_(
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char const* const name ,
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const bool disabled )
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{
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if ( disabled ) {
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PushItemFlag( ImGuiItemFlags_Disabled , true );
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PushStyleVar( ImGuiStyleVar_Alpha ,
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GetStyle( ).Alpha * 0.5f );
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}
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const bool rv( Button( name ) );
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if ( disabled ) {
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PopItemFlag( );
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PopStyleVar( );
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}
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return rv;
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}
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} // namespace ImGui::<anon>
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bool ColorSelectorBar(
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float* const value ,
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const float base ,
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const float unit ,
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const ImVec4 color ,
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char const* const label ) noexcept
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{
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const float BarWidth = 24.f;
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const float BarHeight = 180.f;
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const float fullWidth = CalcItemWidth( );
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const ImVec2 labelSize = CalcTextSize( label );
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const ImVec2 maxValueSize = CalcTextSize( "-9.99" );
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// Compute bounding boxes
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auto* const win( GetCurrentWindow( ) );
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const ImVec2 cPos( win->DC.CursorPos );
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const ImRect bbBar( cPos + ImVec2( ( fullWidth - BarWidth ) * .5f , 0 ) ,
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cPos + ImVec2( ( fullWidth + BarWidth ) * .5f , BarHeight ) );
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const ImRect bbLabel( cPos + ImVec2( 0 , BarHeight + 2 ) ,
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cPos + ImVec2( fullWidth , BarHeight + labelSize.y + 2 ) );
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const ImRect bbValue( ImVec2( cPos.x , bbLabel.Max.y + 2 ) ,
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bbLabel.Max + ImVec2( 0 , maxValueSize.y + 2 ) );
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const ImRect bbAll( cPos , bbValue.Max );
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auto& style( GetStyle( ) );
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auto id( win->GetID( label ) );
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ItemSize( bbAll , style.FramePadding.y );
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if ( !ItemAdd( bbAll , id ) ) {
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return false;
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}
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const bool tabFocus{ FocusableItemRegister( win , id ) };
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const bool hovered{ ItemHoverable( bbBar , id ) };
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auto* const ctx( GetCurrentContext( ) );
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if ( tabFocus || ( hovered && ctx->IO.MouseClicked[ 0 ] ) ) {
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SetActiveID( id , win );
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FocusWindow( win );
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}
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float nValue{ *value };
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const bool active{ ctx->ActiveId == id };
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if ( active ) {
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if ( ctx->IO.MouseDown[ 0 ] ) {
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const float mPos{ ctx->IO.MousePos.y };
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const float clickPos{ 1.0f - ImClamp(
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( mPos - bbBar.Min.y - 1 ) / ( BarHeight - 2 ) ,
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0.0f , 1.0f ) };
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nValue = base + unit * 2.f * clickPos;
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} else {
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ClearActiveID( );
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}
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} else if ( hovered && ctx->IO.KeyCtrl && ctx->IO.MouseWheel != 0.f ) {
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nValue += unit * .01f * ctx->IO.MouseWheel;
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ctx->IO.MouseWheel = 0.f;
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}
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//- DRAW ---------------------------------------------------------------
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auto* const dl( GetWindowDrawList( ) );
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const auto dispColor{ GetColorU32( ImVec4(
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color.x * ( ( hovered || active ) ? 1.f : .5f ) ,
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color.y * ( ( hovered || active ) ? 1.f : .5f ) ,
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color.z * ( ( hovered || active ) ? 1.f : .5f ) ,
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1 ) ) };
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// Draw bar body
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const ImU32 bgCol{ GetColorU32(
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( ctx->ActiveId == id || hovered )
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? ImVec4( .25f , .25f , .25f , 1.f )
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: ImVec4( .1f , .1f , .1f , 1.f ) ) };
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const ImU32 fCol{ GetColorU32(
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( ctx->ActiveId == id || hovered )
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? ImVec4( 1.f , 1.f , 1.f , 1.f )
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: ImVec4( 0.f , 0.f , 0.f , 1.f ) ) };
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dl->AddRectFilled( bbBar.Min , bbBar.Max , bgCol );
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dl->AddRect( bbBar.Min , bbBar.Max , fCol );
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// Draw colored area on bar
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const float val( std::max( base , std::min( unit * 2 , nValue ) ) );
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const float vy2( ( BarHeight - 2 ) * ( 1 - val / ( unit * 2 ) ) );
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dl->AddRectFilled( bbBar.Min + ImVec2( 1 , BarHeight * .5 ) ,
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bbBar.Min + ImVec2( BarWidth - 1 , 1 + vy2 ) ,
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dispColor );
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dl->AddLine( bbBar.Min + ImVec2( 1 , BarHeight * .5 ) ,
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bbBar.Min + ImVec2( BarWidth - 1 , BarHeight * .5 ) ,
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dispColor );
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// Draw label & value
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const char* tStart = &ctx->TempBuffer[ 0 ];
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const char* tEnd = tStart + ImFormatString(
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ctx->TempBuffer, IM_ARRAYSIZE( ctx->TempBuffer ),
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"%.2f" , *value );
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PushStyleColor( ImGuiCol_Text , dispColor );
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RenderTextClipped( bbLabel.Min , bbLabel.Max ,
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label , nullptr , nullptr ,
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ImVec2( .5f , .5f ) );
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RenderTextClipped( bbValue.Min , bbValue.Max ,
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tStart , tEnd , nullptr ,
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ImVec2( .5f , .5f ) );
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PopStyleColor( );
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if ( nValue != *value ) {
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*value = val;
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return true;
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}
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return false;
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}
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bool HueSaturationPad(
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char const* const name ,
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float* const hue ,
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float* const saturation ,
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const float size ) noexcept
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{
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// Check/set bounding box
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const auto wSize{ ImMax( size , CalcItemWidth( ) ) };
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auto* const win( GetCurrentWindow( ) );
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const ImVec2 cPos( win->DC.CursorPos );
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const ImRect bb{ cPos , cPos + ImVec2( wSize , wSize ) };
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auto& style( GetStyle( ) );
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auto id{ win->GetID( name ) };
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ItemSize( bb , style.FramePadding.y );
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if ( !ItemAdd( bb , id ) ) {
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return false;
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}
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const ImVec2 wCenter{ cPos + ImVec2( wSize * .5f , wSize * .5f ) };
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const float wThickness = wSize * 0.08f;
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const float wOuterRadius = wSize * 0.50f;
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const float wInnerRadius = wOuterRadius - wThickness;
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auto* const ctx( GetCurrentContext( ) );
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const auto mPos{ ctx->IO.MousePos };
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const auto rmPos{ mPos - wCenter };
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const auto mcSqDist{ rmPos.x * rmPos.x + rmPos.y * rmPos.y };
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const bool hovered{ mcSqDist <= wSize * wSize * .25f };
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const bool tabFocus{ FocusableItemRegister( win , id ) };
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if ( tabFocus || ( hovered && ctx->IO.MouseClicked[ 0 ] ) ) {
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SetActiveID( id , win );
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FocusWindow( win );
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}
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const bool active{ ctx->ActiveId == id };
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float nHue{ *hue } , nSat{ *saturation };
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if ( active ) {
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if ( ctx->IO.MouseDown[ 0 ] ) {
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nHue = ( 1.f + atan2f( -rmPos.y , -rmPos.x ) / IM_PI ) * .5f;
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nSat = ImSaturate( sqrtf( mcSqDist ) / wInnerRadius );
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} else {
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ClearActiveID( );
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}
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} else if ( hovered && ctx->IO.KeyCtrl && ctx->IO.MouseWheel != 0.f ) {
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const auto change{ ctx->IO.MouseWheel * .005f };
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if ( ctx->IO.KeyShift ) {
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nSat = ImSaturate( nSat + change );
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} else {
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nHue = fmodf( nHue + change + 1.f , 1.f );
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}
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}
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//- DRAW ---------------------------------------------------------------
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auto* const dl( GetWindowDrawList( ) );
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const float aeps = 1.5f / wOuterRadius; // Half a pixel arc length in radians (2pi cancels out).
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const int segmentPerArc = ImMax( 4 , (int) wOuterRadius / 12 );
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const ImU32 hue_colors[] = {
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IM_COL32( 255 , 0 , 0 , 255 ) ,
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IM_COL32( 255 , 255 , 0 , 255 ) ,
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IM_COL32( 0 , 255 , 0 , 255 ) ,
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IM_COL32( 0 , 255 , 255 , 255 ) ,
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IM_COL32( 0 , 0 , 255 , 255 ) ,
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IM_COL32( 255 , 0 , 255 , 255 ) ,
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IM_COL32( 255 , 0 , 0 , 255 )
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};
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const auto avgRadius( ( wInnerRadius + wOuterRadius ) * .5f );
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// Pad background and cross
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const auto bgColor{ GetColorU32( ( hovered || active )
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? ImVec4( .4f , .4f , .4f , 1 )
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: ImVec4( .25f , .25f , .25f , 1 ) ) };
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dl->AddCircleFilled( wCenter , avgRadius , bgColor );
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dl->AddLine( wCenter - ImVec2( 0 , avgRadius ) ,
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wCenter + ImVec2( 0 , avgRadius ) ,
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GetColorU32( ImVec4( .1 , .1 , .1 , 1 ) ) );
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dl->AddLine( wCenter - ImVec2( avgRadius , 0 ) ,
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wCenter + ImVec2( avgRadius , 0 ) ,
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GetColorU32( ImVec4( .1 , .1 , .1 , 1 ) ) );
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// Color wheel
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for ( int n = 0 ; n < 6 ; n ++ ) {
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const float a0 = ( n ) / 6.f * 2.f * IM_PI - aeps;
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const float a1 = ( n + 1.f ) / 6.f * 2.f * IM_PI + aeps;
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const int vStart = dl->_VtxCurrentIdx;
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dl->PathArcTo( wCenter , avgRadius , a0 , a1 , segmentPerArc );
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dl->PathStroke( IM_COL32_WHITE , false, wThickness);
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// Paint colors over existing vertices
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const ImVec2 gradientP0(
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wCenter.x + cosf( a0 ) * wInnerRadius ,
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wCenter.y + sinf( a0 ) * wInnerRadius );
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const ImVec2 gradientP1(
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wCenter.x + cosf( a1 ) * wInnerRadius ,
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wCenter.y + sinf( a1 ) * wInnerRadius );
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ShadeVertsLinearColorGradientKeepAlpha(
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dl->_VtxWritePtr - ( dl->_VtxCurrentIdx - vStart ),
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dl->_VtxWritePtr ,
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gradientP0 , gradientP1 ,
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hue_colors[ n ] , hue_colors[ n + 1 ] );
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}
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// Cursor from hue and saturation
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const float cAngle{ nHue * 2 * IM_PI };
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const float cDist{ nSat * wInnerRadius };
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ImVec4 cColor{ 0 , 0 , 0 , 1 };
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ColorConvertHSVtoRGB( *hue , *saturation , 1 , cColor.x , cColor.y , cColor.z );
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dl->AddCircleFilled( wCenter + ImVec2( cos( cAngle ) * cDist , sin( cAngle ) * cDist ) ,
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( wOuterRadius - wInnerRadius ) * .5f ,
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GetColorU32( cColor ) );
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dl->AddCircle( wCenter + ImVec2( cos( cAngle ) * cDist , sin( cAngle ) * cDist ) ,
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( wOuterRadius - wInnerRadius ) * .5f ,
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GetColorU32( ImVec4( 1 , 1 , 1 , 1 ) ) );
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// Update values
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if ( *hue != nHue || *saturation != nSat ) {
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*hue = nHue;
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*saturation = nSat;
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return true;
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}
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return false;
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}
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bool ColorGradingControls(
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char const* const name ,
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float* const red ,
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float* const green ,
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float* const blue ,
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const float base ,
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const float unit ) noexcept
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{
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using namespace ImGui;
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assert( red && green && blue );
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assert( unit > 0.f && "invalid unit" );
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PushID( name );
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BeginGroup( );
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ImGuiWindow* const window{ GetCurrentWindow() };
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ImGuiStorage* const storage{ window->DC.StateStorage };
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const bool wheelMode{ storage->GetBool( window->GetID( name ) , true ) };
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// Mode selection
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bool modeChanged{ false };
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modeChanged = CGCModeButton_( "Color wheel" , wheelMode );
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SameLine( );
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modeChanged = CGCModeButton_( "Components" , !wheelMode ) || modeChanged;
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if ( modeChanged ) {
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storage->SetBool( window->GetID( name ) , !wheelMode );
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}
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bool changed;
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if ( wheelMode ^ modeChanged ) {
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const float scRed { ImSaturate( ( *red - base ) / ( unit * 2 ) ) } ,
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scGreen{ ImSaturate( ( *green - base ) / ( unit * 2 ) ) } ,
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scBlue { ImSaturate( ( *blue - base ) / ( unit * 2 ) ) };
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float hue , saturation , value;
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ColorConvertRGBtoHSV( scRed , scGreen , scBlue , hue , saturation , value );
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PushMultiItemsWidths( 2 );
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changed = HueSaturationPad( "##wheel" , &hue , &saturation , 180.f );
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PopItemWidth( );
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SameLine( 0 , GetStyle( ).ItemInnerSpacing.x );
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ImVec4 updated{ 0 , 0 , 0 , 1 };
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ColorConvertHSVtoRGB( hue , saturation * .5f , 1 ,
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updated.x , updated.y , updated.z );
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changed = ColorSelectorBar( &value , 0 , .5 , updated , "V" ) || changed;
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if ( changed ) {
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ColorConvertHSVtoRGB( hue , saturation , value ,
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updated.x , updated.y , updated.z );
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*red = updated.x * unit * 2 + base;
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*green = updated.y * unit * 2 + base;
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*blue = updated.z * unit * 2 + base;
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}
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} else {
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PushMultiItemsWidths( 3 );
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changed = ColorSelectorBar( red , base , unit , ImVec4( 1 , 0 , 0 , 0 ) , "R" );
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PopItemWidth( );
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SameLine( 0 , GetStyle( ).ItemInnerSpacing.x );
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changed = ColorSelectorBar( green , base , unit , ImVec4( 0 , 1 , 0 , 0 ) , "G" )
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|| changed;
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PopItemWidth( );
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SameLine( 0 , GetStyle( ).ItemInnerSpacing.x );
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changed = ColorSelectorBar( blue , base , unit , ImVec4( .3 , .3 , 1 , 0 ) , "B" )
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|| changed;
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}
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PopItemWidth( );
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EndGroup( );
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PopID( );
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return changed;
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}
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} // namespace ImGui
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34
colorgrading.hh
Normal file
34
colorgrading.hh
Normal file
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@ -0,0 +1,34 @@
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#pragma once
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#ifndef REAL_BUILD
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# include "externals.hh"
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#endif
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namespace ImGui {
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// Full color grading controls with 2 tabs (color wheel mode / component mode).
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bool ColorGradingControls(
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char const* const name ,
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float* const red ,
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float* const green ,
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float* const blue ,
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const float base = 0.f ,
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const float unit = 1.f ) noexcept;
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// Hue/saturation wheel with XY pad. Can also be manipulated using Ctrl+Wheel
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// (rotates hue) and Ctrl+Shift+Wheel (changes saturation).
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bool HueSaturationPad(
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char const* const name ,
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float* const hue ,
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float* const saturation ,
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const float size = 0.f ) noexcept;
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// Color selection bar.
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bool ColorSelectorBar(
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float* const value ,
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const float base ,
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const float unit ,
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const ImVec4 color ,
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char const* const label ) noexcept;
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} // namespace ImGui
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324
main.cc
324
main.cc
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@ -1,7 +1,4 @@
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#include "externals.hh"
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#define IMGUI_DEFINE_MATH_OPERATORS
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#include "imgui_impl_sdl.h"
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#include "demo.hh"
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#include "globals.hh"
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@ -13,6 +10,8 @@
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#include "rendertarget.hh"
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#include "sync.hh"
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#include "colorgrading.hh"
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using ebcl::T_Optional;
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@ -178,325 +177,6 @@ void T_Main::handleCapture( )
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}
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}
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bool CGCModeButton_(
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char const* const name ,
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const bool disabled )
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{
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using namespace ImGui;
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if ( disabled ) {
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PushItemFlag( ImGuiItemFlags_Disabled , true );
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PushStyleVar( ImGuiStyleVar_Alpha , GetStyle( ).Alpha * 0.5f );
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}
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const bool rv( Button( name ) );
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if ( disabled ) {
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PopItemFlag( );
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PopStyleVar( );
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}
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return rv;
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}
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bool CGCComponentBar_(
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float* const value ,
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const float base ,
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const float unit ,
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const ImVec4 color ,
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char const* const label ) noexcept
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{
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using namespace ImGui;
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const float BarWidth = 24.f;
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const float BarHeight = 180.f;
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const float fullWidth = CalcItemWidth( );
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const ImVec2 labelSize = CalcTextSize( label );
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const ImVec2 maxValueSize = CalcTextSize( "-9.99" );
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// Compute bounding boxes
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auto* const win( GetCurrentWindow( ) );
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const ImVec2 cPos( win->DC.CursorPos );
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const ImRect bbBar( cPos + ImVec2( ( fullWidth - BarWidth ) * .5f , 0 ) ,
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cPos + ImVec2( ( fullWidth + BarWidth ) * .5f , BarHeight ) );
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const ImRect bbLabel( cPos + ImVec2( 0 , BarHeight + 2 ) ,
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cPos + ImVec2( fullWidth , BarHeight + labelSize.y + 2 ) );
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const ImRect bbValue( ImVec2( cPos.x , bbLabel.Max.y + 2 ) ,
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bbLabel.Max + ImVec2( 0 , maxValueSize.y + 2 ) );
|
||||
const ImRect bbAll( cPos , bbValue.Max );
|
||||
auto& style( GetStyle( ) );
|
||||
auto id( win->GetID( label ) );
|
||||
ItemSize( bbAll , style.FramePadding.y );
|
||||
if ( !ItemAdd( bbAll , id ) ) {
|
||||
return false;
|
||||
}
|
||||
|
||||
const bool tabFocus{ FocusableItemRegister( win , id ) };
|
||||
const bool hovered{ ItemHoverable( bbBar , id ) };
|
||||
auto* const ctx( GetCurrentContext( ) );
|
||||
if ( tabFocus || ( hovered && ctx->IO.MouseClicked[ 0 ] ) ) {
|
||||
SetActiveID( id , win );
|
||||
FocusWindow( win );
|
||||
}
|
||||
|
||||
float nValue{ *value };
|
||||
const bool active{ ctx->ActiveId == id };
|
||||
if ( active ) {
|
||||
if ( ctx->IO.MouseDown[ 0 ] ) {
|
||||
const float mPos{ ctx->IO.MousePos.y };
|
||||
const float clickPos{ 1.0f - ImClamp(
|
||||
( mPos - bbBar.Min.y - 1 ) / ( BarHeight - 2 ) ,
|
||||
0.0f , 1.0f ) };
|
||||
nValue = base + unit * 2.f * clickPos;
|
||||
} else {
|
||||
ClearActiveID( );
|
||||
}
|
||||
} else if ( hovered && ctx->IO.KeyCtrl && ctx->IO.MouseWheel != 0.f ) {
|
||||
nValue += unit * .01f * ctx->IO.MouseWheel;
|
||||
ctx->IO.MouseWheel = 0.f;
|
||||
}
|
||||
|
||||
//- DRAW ---------------------------------------------------------------
|
||||
|
||||
auto* const dl( GetWindowDrawList( ) );
|
||||
const auto dispColor{ GetColorU32( ImVec4(
|
||||
color.x * ( ( hovered || active ) ? 1.f : .5f ) ,
|
||||
color.y * ( ( hovered || active ) ? 1.f : .5f ) ,
|
||||
color.z * ( ( hovered || active ) ? 1.f : .5f ) ,
|
||||
1 ) ) };
|
||||
|
||||
// Draw bar body
|
||||
const ImU32 bgCol{ GetColorU32(
|
||||
( ctx->ActiveId == id || hovered )
|
||||
? ImVec4( .25f , .25f , .25f , 1.f )
|
||||
: ImVec4( .1f , .1f , .1f , 1.f ) ) };
|
||||
const ImU32 fCol{ GetColorU32(
|
||||
( ctx->ActiveId == id || hovered )
|
||||
? ImVec4( 1.f , 1.f , 1.f , 1.f )
|
||||
: ImVec4( 0.f , 0.f , 0.f , 1.f ) ) };
|
||||
dl->AddRectFilled( bbBar.Min , bbBar.Max , bgCol );
|
||||
dl->AddRect( bbBar.Min , bbBar.Max , fCol );
|
||||
|
||||
// Draw colored area on bar
|
||||
const float val( std::max( base , std::min( unit * 2 , nValue ) ) );
|
||||
const float vy2( ( BarHeight - 2 ) * ( 1 - val / ( unit * 2 ) ) );
|
||||
dl->AddRectFilled( bbBar.Min + ImVec2( 1 , BarHeight * .5 ) ,
|
||||
bbBar.Min + ImVec2( BarWidth - 1 , 1 + vy2 ) ,
|
||||
dispColor );
|
||||
dl->AddLine( bbBar.Min + ImVec2( 1 , BarHeight * .5 ) ,
|
||||
bbBar.Min + ImVec2( BarWidth - 1 , BarHeight * .5 ) ,
|
||||
dispColor );
|
||||
|
||||
// Draw label & value
|
||||
const char* tStart = &ctx->TempBuffer[ 0 ];
|
||||
const char* tEnd = tStart + ImFormatString(
|
||||
ctx->TempBuffer, IM_ARRAYSIZE( ctx->TempBuffer ),
|
||||
"%.2f" , *value );
|
||||
PushStyleColor( ImGuiCol_Text , dispColor );
|
||||
RenderTextClipped( bbLabel.Min , bbLabel.Max ,
|
||||
label , nullptr , nullptr ,
|
||||
ImVec2( .5f , .5f ) );
|
||||
RenderTextClipped( bbValue.Min , bbValue.Max ,
|
||||
tStart , tEnd , nullptr ,
|
||||
ImVec2( .5f , .5f ) );
|
||||
PopStyleColor( );
|
||||
|
||||
if ( nValue != *value ) {
|
||||
*value = val;
|
||||
return true;
|
||||
}
|
||||
return false;
|
||||
}
|
||||
|
||||
bool HueSaturationPad(
|
||||
char const* const name ,
|
||||
float* const hue ,
|
||||
float* const saturation ,
|
||||
const float size = 0.f ) noexcept
|
||||
{
|
||||
using namespace ImGui;
|
||||
|
||||
// Check/set bounding box
|
||||
const auto wSize{ ImMax( size , CalcItemWidth( ) ) };
|
||||
auto* const win( GetCurrentWindow( ) );
|
||||
const ImVec2 cPos( win->DC.CursorPos );
|
||||
const ImRect bb{ cPos , cPos + ImVec2( wSize , wSize ) };
|
||||
auto& style( GetStyle( ) );
|
||||
auto id{ win->GetID( name ) };
|
||||
ItemSize( bb , style.FramePadding.y );
|
||||
if ( !ItemAdd( bb , id ) ) {
|
||||
return false;
|
||||
}
|
||||
|
||||
const ImVec2 wCenter{ cPos + ImVec2( wSize * .5f , wSize * .5f ) };
|
||||
const float wThickness = wSize * 0.08f;
|
||||
const float wOuterRadius = wSize * 0.50f;
|
||||
const float wInnerRadius = wOuterRadius - wThickness;
|
||||
|
||||
auto* const ctx( GetCurrentContext( ) );
|
||||
const auto mPos{ ctx->IO.MousePos };
|
||||
const auto rmPos{ mPos - wCenter };
|
||||
const auto mcSqDist{ rmPos.x * rmPos.x + rmPos.y * rmPos.y };
|
||||
const bool hovered{ mcSqDist <= wSize * wSize * .25f };
|
||||
const bool tabFocus{ FocusableItemRegister( win , id ) };
|
||||
if ( tabFocus || ( hovered && ctx->IO.MouseClicked[ 0 ] ) ) {
|
||||
SetActiveID( id , win );
|
||||
FocusWindow( win );
|
||||
}
|
||||
|
||||
const bool active{ ctx->ActiveId == id };
|
||||
float nHue{ *hue } , nSat{ *saturation };
|
||||
if ( active ) {
|
||||
if ( ctx->IO.MouseDown[ 0 ] ) {
|
||||
nHue = ( 1.f + atan2f( -rmPos.y , -rmPos.x ) / IM_PI ) * .5f;
|
||||
nSat = ImSaturate( sqrtf( mcSqDist ) / wInnerRadius );
|
||||
} else {
|
||||
ClearActiveID( );
|
||||
}
|
||||
} else if ( hovered && ctx->IO.KeyCtrl && ctx->IO.MouseWheel != 0.f ) {
|
||||
const auto change{ ctx->IO.MouseWheel * .005f };
|
||||
if ( ctx->IO.KeyShift ) {
|
||||
nSat = ImSaturate( nSat + change );
|
||||
} else {
|
||||
nHue = fmodf( nHue + change + 1.f , 1.f );
|
||||
}
|
||||
}
|
||||
|
||||
//- DRAW ---------------------------------------------------------------
|
||||
|
||||
auto* const dl( GetWindowDrawList( ) );
|
||||
const float aeps = 1.5f / wOuterRadius; // Half a pixel arc length in radians (2pi cancels out).
|
||||
const int segmentPerArc = ImMax( 4 , (int) wOuterRadius / 12 );
|
||||
const ImU32 hue_colors[] = {
|
||||
IM_COL32( 255 , 0 , 0 , 255 ) ,
|
||||
IM_COL32( 255 , 255 , 0 , 255 ) ,
|
||||
IM_COL32( 0 , 255 , 0 , 255 ) ,
|
||||
IM_COL32( 0 , 255 , 255 , 255 ) ,
|
||||
IM_COL32( 0 , 0 , 255 , 255 ) ,
|
||||
IM_COL32( 255 , 0 , 255 , 255 ) ,
|
||||
IM_COL32( 255 , 0 , 0 , 255 )
|
||||
};
|
||||
const auto avgRadius( ( wInnerRadius + wOuterRadius ) * .5f );
|
||||
|
||||
// Pad background and cross
|
||||
const auto bgColor{ GetColorU32( ( hovered || active )
|
||||
? ImVec4( .4f , .4f , .4f , 1 )
|
||||
: ImVec4( .25f , .25f , .25f , 1 ) ) };
|
||||
dl->AddCircleFilled( wCenter , avgRadius , bgColor );
|
||||
dl->AddLine( wCenter - ImVec2( 0 , avgRadius ) ,
|
||||
wCenter + ImVec2( 0 , avgRadius ) ,
|
||||
GetColorU32( ImVec4( .1 , .1 , .1 , 1 ) ) );
|
||||
dl->AddLine( wCenter - ImVec2( avgRadius , 0 ) ,
|
||||
wCenter + ImVec2( avgRadius , 0 ) ,
|
||||
GetColorU32( ImVec4( .1 , .1 , .1 , 1 ) ) );
|
||||
// Color wheel
|
||||
for ( int n = 0 ; n < 6 ; n ++ ) {
|
||||
const float a0 = ( n ) / 6.f * 2.f * IM_PI - aeps;
|
||||
const float a1 = ( n + 1.f ) / 6.f * 2.f * IM_PI + aeps;
|
||||
const int vStart = dl->_VtxCurrentIdx;
|
||||
dl->PathArcTo( wCenter , avgRadius , a0 , a1 , segmentPerArc );
|
||||
dl->PathStroke( IM_COL32_WHITE , false, wThickness);
|
||||
|
||||
// Paint colors over existing vertices
|
||||
const ImVec2 gradientP0(
|
||||
wCenter.x + cosf( a0 ) * wInnerRadius ,
|
||||
wCenter.y + sinf( a0 ) * wInnerRadius );
|
||||
const ImVec2 gradientP1(
|
||||
wCenter.x + cosf( a1 ) * wInnerRadius ,
|
||||
wCenter.y + sinf( a1 ) * wInnerRadius );
|
||||
ShadeVertsLinearColorGradientKeepAlpha(
|
||||
dl->_VtxWritePtr - ( dl->_VtxCurrentIdx - vStart ),
|
||||
dl->_VtxWritePtr ,
|
||||
gradientP0 , gradientP1 ,
|
||||
hue_colors[ n ] , hue_colors[ n + 1 ] );
|
||||
}
|
||||
// Cursor from hue and saturation
|
||||
const float cAngle{ nHue * 2 * IM_PI };
|
||||
const float cDist{ nSat * wInnerRadius };
|
||||
ImVec4 cColor{ 0 , 0 , 0 , 1 };
|
||||
ColorConvertHSVtoRGB( *hue , *saturation , 1 , cColor.x , cColor.y , cColor.z );
|
||||
dl->AddCircleFilled( wCenter + ImVec2( cos( cAngle ) * cDist , sin( cAngle ) * cDist ) ,
|
||||
( wOuterRadius - wInnerRadius ) * .5f ,
|
||||
GetColorU32( cColor ) );
|
||||
dl->AddCircle( wCenter + ImVec2( cos( cAngle ) * cDist , sin( cAngle ) * cDist ) ,
|
||||
( wOuterRadius - wInnerRadius ) * .5f ,
|
||||
GetColorU32( ImVec4( 1 , 1 , 1 , 1 ) ) );
|
||||
|
||||
// Update values
|
||||
if ( *hue != nHue || *saturation != nSat ) {
|
||||
*hue = nHue;
|
||||
*saturation = nSat;
|
||||
return true;
|
||||
}
|
||||
return false;
|
||||
}
|
||||
|
||||
bool ColorGradingControls(
|
||||
char const* const name ,
|
||||
float* const red ,
|
||||
float* const green ,
|
||||
float* const blue ,
|
||||
const float base = 0.f ,
|
||||
const float unit = 1.f ) noexcept
|
||||
{
|
||||
using namespace ImGui;
|
||||
assert( red && green && blue );
|
||||
assert( unit > 0.f && "invalid unit" );
|
||||
PushID( name );
|
||||
BeginGroup( );
|
||||
|
||||
ImGuiWindow* const window{ GetCurrentWindow() };
|
||||
ImGuiStorage* const storage{ window->DC.StateStorage };
|
||||
const bool wheelMode{ storage->GetBool( window->GetID( name ) , true ) };
|
||||
|
||||
// Mode selection
|
||||
bool modeChanged{ false };
|
||||
modeChanged = CGCModeButton_( "Color wheel" , wheelMode );
|
||||
SameLine( );
|
||||
modeChanged = CGCModeButton_( "Components" , !wheelMode ) || modeChanged;
|
||||
if ( modeChanged ) {
|
||||
storage->SetBool( window->GetID( name ) , !wheelMode );
|
||||
}
|
||||
|
||||
bool changed;
|
||||
if ( wheelMode ^ modeChanged ) {
|
||||
const float scRed { ImSaturate( ( *red - base ) / ( unit * 2 ) ) } ,
|
||||
scGreen{ ImSaturate( ( *green - base ) / ( unit * 2 ) ) } ,
|
||||
scBlue { ImSaturate( ( *blue - base ) / ( unit * 2 ) ) };
|
||||
float hue , saturation , value;
|
||||
ColorConvertRGBtoHSV( scRed , scGreen , scBlue , hue , saturation , value );
|
||||
|
||||
PushMultiItemsWidths( 2 );
|
||||
changed = HueSaturationPad( "##wheel" , &hue , &saturation , 180.f );
|
||||
PopItemWidth( );
|
||||
SameLine( 0 , GetStyle( ).ItemInnerSpacing.x );
|
||||
ImVec4 updated{ 0 , 0 , 0 , 1 };
|
||||
ColorConvertHSVtoRGB( hue , saturation * .5f , 1 ,
|
||||
updated.x , updated.y , updated.z );
|
||||
changed = CGCComponentBar_( &value , 0 , .5 , updated , "V" ) || changed;
|
||||
|
||||
if ( changed ) {
|
||||
ColorConvertHSVtoRGB( hue , saturation , value ,
|
||||
updated.x , updated.y , updated.z );
|
||||
*red = updated.x * unit * 2 + base;
|
||||
*green = updated.y * unit * 2 + base;
|
||||
*blue = updated.z * unit * 2 + base;
|
||||
}
|
||||
} else {
|
||||
PushMultiItemsWidths( 3 );
|
||||
changed = CGCComponentBar_( red , base , unit , ImVec4( 1 , 0 , 0 , 0 ) , "R" );
|
||||
PopItemWidth( );
|
||||
SameLine( 0 , GetStyle( ).ItemInnerSpacing.x );
|
||||
changed = CGCComponentBar_( green , base , unit , ImVec4( 0 , 1 , 0 , 0 ) , "G" )
|
||||
|| changed;
|
||||
PopItemWidth( );
|
||||
SameLine( 0 , GetStyle( ).ItemInnerSpacing.x );
|
||||
changed = CGCComponentBar_( blue , base , unit , ImVec4( .3 , .3 , 1 , 0 ) , "B" )
|
||||
|| changed;
|
||||
}
|
||||
PopItemWidth( );
|
||||
|
||||
EndGroup( );
|
||||
PopID( );
|
||||
return changed;
|
||||
}
|
||||
|
||||
void T_Main::makeUI( )
|
||||
{
|
||||
using namespace ImGui;
|
||||
|
|
|
|||
Loading…
Reference in a new issue