Added text reflection as new property in the theme

git-svn-id: svn://svn.code.sf.net/p/ultrastardx/svn/trunk@1060 b956fd51-792f-4845-bead-9b4dfca2ff2c

1 files changed, 63 insertions, 7 deletions

diff --git a/Game/Code/Classes/TextGL.pas b/Game/Code/Classes/TextGL.pas
index 5b114669..e00388a4 100644
--- a/Game/Code/Classes/TextGL.pas
+++ b/Game/Code/Classes/TextGL.pas
@@ -33,7 +33,7 @@ procedure SetFontSize(Size: real);
 procedure SetFontStyle(Style: integer); // sets active font style (normal, bold, etc)

 procedure SetFontItalic(Enable: boolean); // sets italic type letter (works for all fonts)

 procedure SetFontAspectW(Aspect: real);

-

+procedure SetFontReflection(Enable:boolean;Spacing: real); // Enables/Disables text reflection

 // Start of SDL_ttf

 function NextPowerOfTwo(Value: Integer): Integer;

 //Checks if the ttf exists, if yes then a SDL_ttf is returned

@@ -63,6 +63,8 @@ type
     Done:     real;

     Outline:  real;

     Italic:   boolean;

+    Reflection: boolean;

+    ReflectionSpacing: real;

   end;

 

 

@@ -74,6 +76,9 @@ var
   PColG:      real;

   PColB:      real;

 

+  // Colours for the reflection

+  TempColor:    Array[0..3] of GLfloat;
+  PTempColor:   PGLfloat;

 implementation

 

 uses

@@ -208,24 +213,27 @@ procedure glPrintLetter(Letter: char);
 var

   TexX, TexY:   real;

   TexR, TexB:   real;

+  TestHeight: real;

   FWidth:       real;

   PL, PT:       real;

   PR, PB:       real;

   XItal:        real; // X shift for italic type letter

+  ReflectionSpacing:real; // Distance of the reflection

 begin

   with Fonts[ActFont].Tex do

   begin

     FWidth := Fonts[ActFont].Width[Ord(Letter)];

 

     W := FWidth * (H/30) * Fonts[ActFont].AspectW;

-  //  H := 30;

 

     // set texture positions

     TexX := (ord(Letter) mod 16) * 1/16 + 1/32 - FWidth/1024 - Fonts[ActFont].Outline/1024;

-    TexY := (ord(Letter) div 16) * 1/16 + 2/1024; // 2/1024

+    TexY := (ord(Letter) div 16) * 1/16 + 2/1024;

     TexR := (ord(Letter) mod 16) * 1/16 + 1/32 + FWidth/1024 + Fonts[ActFont].Outline/1024;

     TexB := (1 + ord(Letter) div 16) * 1/16 - 2/1024;

 

+    TestHeight := TexB - TexY;

+

     // set vector positions

     PL := X - Fonts[ActFont].Outline * (H/30) * Fonts[ActFont].AspectW /2;

     PT := Y;

@@ -252,10 +260,47 @@ begin
       glEnd;

     end;

 

-    X := X + W;

-    glDisable(GL_BLEND);

-    glDisable(GL_TEXTURE_2D);

-  end; // with

+    // <mog> Reflection

+    // Yes it would make sense to put this in an extra procedure,
+    // but this works, doesn't take much lines, and is almost lightweight
+    if Fonts[ActFont].Reflection = true then
+      begin
+        ReflectionSpacing := Fonts[ActFont].ReflectionSpacing + H/2;
+
+        glDepthRange(0, 10);
+        glDepthFunc(GL_LEQUAL);

+        glEnable(GL_DEPTH_TEST);

+

+        glBegin(GL_QUADS);

+        try

+          glColor4f(TempColor[0], TempColor[1], TempColor[2], 0);

+          glTexCoord2f(TexX, TexY + TestHeight/2);

+          glVertex3f(PL, PB + ReflectionSpacing - H/2, z);

+

+          glColor4f(TempColor[0], TempColor[1], TempColor[2], Alpha-0.3);

+          glTexCoord2f(TexX, TexB );

+          glVertex3f(PL + XItal, PT + ReflectionSpacing, z);

+

+          glTexCoord2f(TexR, TexB );

+          glVertex3f(PR + XItal, PT + ReflectionSpacing, z);

+

+          glColor4f(TempColor[0], TempColor[1], TempColor[2], 0);

+          glTexCoord2f(TexR, TexY + TestHeight/2);

+          glVertex3f(PR, PB + ReflectionSpacing - H/2, z);

+        finally

+          glEnd;

+        end;

+          glDisable(GL_DEPTH_TEST);

+      end; // reflection

+
+      glDisable(GL_TEXTURE_2D);
+      glDisable(GL_BLEND);

+
+    X := X + W;
+  end;     // with
+
+  //write the colour back
+  glColor4fv(PTempColor);
 end;

 

 procedure glPrintLetterCut(letter: char; Start, Finish: real);

@@ -334,6 +379,11 @@ begin
   end; // while

 *)

 

+//Save the actual color and alpha (for reflection)

+  PTempColor:= @TempColor;
+//I've read that glGetFloat is quite slow, but it seems that there is no alternative
+  glGetFloatv(GL_CURRENT_COLOR, PTempColor);
+

   // This code is better, because doing a Copy of for every

   // letter in a string is a waste of CPU & Memory resources.

   // Copy operations are quite memory intensive, and this simple

@@ -536,6 +586,12 @@ begin
   Fonts[ActFont].AspectW := Aspect;

 end;

 

+procedure SetFontReflection(Enable:boolean;Spacing: real);

+begin
+  Fonts[ActFont].Reflection        := Enable;

+  Fonts[ActFont].ReflectionSpacing := Spacing;

+end;

+

 end.