Change the BLF_aspect function to handle 3d text.

This is need to properly handle 3d text (dalai work on GE), before
the BLF_aspect only take one argument, and the result was a call to:
	glScalef(aspect, aspect, 1.0)

Now the three value are store in the font (x, y and z) and also
need to be enable using BLF_enable(BLF_ASPECT).

By default all the code that don't have BLF_ASPECT enable work with
a scale of 1.0 (so nothing change to the current UI).

I also remove all the call of BLF_aspect(fontid, 1.0) found in
the editors, because is disable by default, so no need any more.

Campbell the only thing to check is the python api, right now
I modify the api to from:
	BLF_aspect(fontid, aspect)
to:
	BLF_aspect(fontid, aspect, aspect, 1.0)

This is to avoid break the api, but now you need add the BLF_ASPECT
option to the function py_blf_enable and in some point change
py_blf_aspect to take 3 arguments.

4 files changed, 67 insertions, 16 deletions

diff --git a/source/blender/blenfont/BLF_api.h b/source/blender/blenfont/BLF_api.h
index 84086742b15..b696c64023d 100644
--- a/source/blender/blenfont/BLF_api.h
+++ b/source/blender/blenfont/BLF_api.h
@@ -45,7 +45,7 @@ int BLF_load_mem_unique(const char *name, unsigned char *mem, int mem_size);
 /* Attach a file with metrics information from memory. */
 void BLF_metrics_attach(int fontid, unsigned char *mem, int mem_size);
 
-void BLF_aspect(int fontid, float aspect);
+void BLF_aspect(int fontid, float x, float y, float z);
 void BLF_position(int fontid, float x, float y, float z);
 void BLF_size(int fontid, int size, int dpi);
 
@@ -195,6 +195,7 @@ void BLF_dir_free(char **dirs, int count);
 #define BLF_SHADOW (1<<2)
 #define BLF_KERNING_DEFAULT (1<<3)
 #define BLF_MATRIX (1<<4)
+#define BLF_ASPECT (1<<5)
 
 // XXX, bad design
 extern int blf_mono_font;
diff --git a/source/blender/blenfont/intern/blf.c b/source/blender/blenfont/intern/blf.c
index d9a02b09336..3ac0b8449b0 100644
--- a/source/blender/blenfont/intern/blf.c
+++ b/source/blender/blenfont/intern/blf.c
@@ -321,13 +321,16 @@ void BLF_disable_default(int option)
 		font->flags &= ~option;
 }
 
-void BLF_aspect(int fontid, float aspect)
+void BLF_aspect(int fontid, float x, float y, float z)
 {
 	FontBLF *font;
 
 	font= BLF_get(fontid);
-	if (font)
-		font->aspect= aspect;
+	if (font) {
+		font->aspect[0]= x;
+		font->aspect[1]= y;
+		font->aspect[2]= z;
+	}
 }
 
 void BLF_matrix(int fontid, double *m)
@@ -346,23 +349,43 @@ void BLF_position(int fontid, float x, float y, float z)
 {
 	FontBLF *font;
 	float remainder;
+	float xa, ya, za;
 
 	font= BLF_get(fontid);
 	if (font) {
+		if (font->flags & BLF_ASPECT) {
+			xa= font->aspect[0];
+			ya= font->aspect[1];
+			za= font->aspect[2];
+		}
+		else {
+			xa= 1.0f;
+			ya= 1.0f;
+			za= 1.0f;
+		}
+
 		remainder= x - floor(x);
 		if (remainder > 0.4 && remainder < 0.6) {
 			if (remainder < 0.5)
-				x -= 0.1 * font->aspect;
+				x -= 0.1 * xa;
 			else
-				x += 0.1 * font->aspect;
+				x += 0.1 * xa;
 		}
 
 		remainder= y - floor(y);
 		if (remainder > 0.4 && remainder < 0.6) {
 			if (remainder < 0.5)
-				y -= 0.1 * font->aspect;
+				y -= 0.1 * ya;
 			else
-				y += 0.1 * font->aspect;
+				y += 0.1 * ya;
+		}
+
+		remainder= z - floor(z);
+		if (remainder > 0.4 && remainder < 0.6) {
+			if (remainder < 0.5)
+				z -= 0.1 * za;
+			else
+				z += 0.1 * za;
 		}
 
 		font->pos[0]= x;
@@ -406,6 +429,7 @@ void BLF_draw_default(float x, float y, float z, const char *str, size_t len)
 	BLF_position(global_font_default, x, y, z);
 	BLF_draw(global_font_default, str, len);
 }
+
 /* same as above but call 'BLF_draw_ascii' */
 void BLF_draw_default_ascii(float x, float y, float z, const char *str, size_t len)
 {
@@ -434,7 +458,6 @@ void BLF_rotation_default(float angle)
 		font->angle= angle;
 }
 
-
 static void blf_draw__start(FontBLF *font)
 {
 	/*
@@ -452,11 +475,14 @@ static void blf_draw__start(FontBLF *font)
 		glMultMatrixd((GLdouble *)&font->m);
 
 	glTranslatef(font->pos[0], font->pos[1], font->pos[2]);
-	glScalef(font->aspect, font->aspect, 1.0);
+
+	if (font->flags & BLF_ASPECT)
+		glScalef(font->aspect[0], font->aspect[1], font->aspect[2]);
 
 	if (font->flags & BLF_ROTATION)
 		glRotatef(font->angle, 0.0f, 0.0f, 1.0f);
 }
+
 static void blf_draw__end(void)
 {
 	glPopMatrix();
diff --git a/source/blender/blenfont/intern/blf_font.c b/source/blender/blenfont/intern/blf_font.c
index 3adda7bb6f1..d1dcf7aa9b3 100644
--- a/source/blender/blenfont/intern/blf_font.c
+++ b/source/blender/blenfont/intern/blf_font.c
@@ -420,35 +420,57 @@ void blf_font_boundbox(FontBLF *font, const char *str, rctf *box)
 
 void blf_font_width_and_height(FontBLF *font, const char *str, float *width, float *height)
 {
+	float xa, ya;
 	rctf box;
 
 	if (font->glyph_cache) {
+		if (font->flags & BLF_ASPECT) {
+			xa= font->aspect[0];
+			ya= font->aspect[1];
+		}
+		else {
+			xa= 1.0f;
+			ya= 1.0f;
+		}
+
 		blf_font_boundbox(font, str, &box);
-		*width= ((box.xmax - box.xmin) * font->aspect);
-		*height= ((box.ymax - box.ymin) * font->aspect);
+		*width= ((box.xmax - box.xmin) * xa);
+		*height= ((box.ymax - box.ymin) * ya);
 	}
 }
 
 float blf_font_width(FontBLF *font, const char *str)
 {
+	float xa;
 	rctf box;
 
 	if (!font->glyph_cache)
 		return(0.0f);
 
+	if (font->flags & BLF_ASPECT)
+		xa= font->aspect[0];
+	else
+		xa= 1.0f;
+
 	blf_font_boundbox(font, str, &box);
-	return((box.xmax - box.xmin) * font->aspect);
+	return((box.xmax - box.xmin) * xa);
 }
 
 float blf_font_height(FontBLF *font, const char *str)
 {
+	float ya;
 	rctf box;
 
 	if (!font->glyph_cache)
 		return(0.0f);
 
+	if (font->flags & BLF_ASPECT)
+		ya= font->aspect[1];
+	else
+		ya= 1.0f;
+
 	blf_font_boundbox(font, str, &box);
-	return((box.ymax - box.ymin) * font->aspect);
+	return((box.ymax - box.ymin) * ya);
 }
 
 float blf_font_fixed_width(FontBLF *font)
@@ -495,7 +517,9 @@ static void blf_font_fill(FontBLF *font)
 {
 	int i;
 
-	font->aspect= 1.0f;
+	font->aspect[0]= 1.0f;
+	font->aspect[1]= 1.0f;
+	font->aspect[2]= 1.0f;
 	font->pos[0]= 0.0f;
 	font->pos[1]= 0.0f;
 	font->angle= 0.0f;
diff --git a/source/blender/blenfont/intern/blf_internal_types.h b/source/blender/blenfont/intern/blf_internal_types.h
index 04afaeb2e97..d7c023fc415 100644
--- a/source/blender/blenfont/intern/blf_internal_types.h
+++ b/source/blender/blenfont/intern/blf_internal_types.h
@@ -133,7 +133,7 @@ typedef struct FontBLF {
 	char *filename;
 
 	/* aspect ratio or scale. */
-	float aspect;
+	float aspect[3];
 
 	/* initial position for draw the text. */
 	float pos[3];