diff -r 49e2960d4642 -r 3fd5e0fc075f components/tft/tft.h
--- a/components/tft/tft.h	Fri Oct 26 21:23:46 2018 +0200
+++ b/components/tft/tft.h	Fri Oct 26 22:19:48 2018 +0200
@@ -3,6 +3,7 @@
  * @brief High level TFT functions
  * @author LoBo 04/2017
  * @see https://github.com/loboris
+ * @author M. Broek - removed unused code for this app.
  */
 
 #ifndef _TFT_H_
@@ -179,21 +180,6 @@
  */
 void TFT_drawLine(int16_t x0, int16_t y0, int16_t x1, int16_t y1, color_t color);
 
-
-/**
- * @brief Draw line on screen from (x,y) point at given angle
- *        Line drawing angle starts at lower right quadrant of the screen and is offseted by
- *        '_angleOffset' global variable (default: -90 degrees)
- *
- * @param x horizontal start position
- * @param y vertical start position
- * @param start start offset from (x,y)
- * @param len length of the line
- * @param angle line angle in degrees
- * @param color line color
- */
-void TFT_drawLineByAngle(uint16_t x, uint16_t y, uint16_t start, uint16_t len, uint16_t angle, color_t color);
-
 /**
  * @brief Fill given rectangular screen region with color
  * 
@@ -255,32 +241,6 @@
 void TFT_fillWindow(color_t color);
 
 /**
- * @brief Draw triangle on screen
- * 
- * @param x0 first triangle point x position
- * @param y0 first triangle point y position
- * @param x0 second triangle point x position
- * @param y0 second triangle point y position
- * @param x0 third triangle point x position
- * @param y0 third triangle point y position
- * @param color triangle color
- */
-void TFT_drawTriangle(uint16_t x0, uint16_t y0, uint16_t x1, uint16_t y1, uint16_t x2, uint16_t y2, color_t color);
-
-/**
- * @brief Fill triangular screen region with color
- * 
- * @param x0 first triangle point x position
- * @param y0 first triangle point y position
- * @param x0 second triangle point x position
- * @param y0 second triangle point y position
- * @param x0 third triangle point x position
- * @param y0 third triangle point y position
- * @param color fill color
- */
-void TFT_fillTriangle(uint16_t x0, uint16_t y0, uint16_t x1, uint16_t y1, uint16_t x2, uint16_t y2, color_t color);
-
-/**
  * @brief Draw circle on screen
  * 
  * @param x circle center x position
@@ -301,73 +261,6 @@
 void TFT_fillCircle(int16_t x, int16_t y, int radius, color_t color);
 
 /**
- * @brief Draw ellipse on screen
- * 
- * @param x0 ellipse center x position
- * @param y0 ellipse center x position
- * @param rx ellipse horizontal radius
- * @param ry ellipse vertical radius
- * @param option drawing options, multiple options can be combined
- *
- *               1 (TFT_ELLIPSE_UPPER_RIGHT) draw upper right corner
- *               2 (TFT_ELLIPSE_UPPER_LEFT)  draw upper left corner
- *               4 (TFT_ELLIPSE_LOWER_LEFT)  draw lower left corner
- *               8 (TFT_ELLIPSE_LOWER_RIGHT) draw lower right corner
- *             to draw the whole ellipse use option value 15 (1 | 2 | 4 | 8)
- * @param color: circle color
- */
-void TFT_drawEllipse(uint16_t x0, uint16_t y0, uint16_t rx, uint16_t ry, color_t color, uint8_t option);
-
-/**
- * @brief Fill elliptical region on screen
- * 
- * @param x0 ellipse center x position
- * @param y0 ellipse center x position
- * @param rx ellipse horizontal radius
- * @param ry ellipse vertical radius
- * @param option drawing options, multiple options can be combined
- *
- *              1 (TFT_ELLIPSE_UPPER_RIGHT) fill upper right corner
- *              2 (TFT_ELLIPSE_UPPER_LEFT)  fill upper left corner
- *              4 (TFT_ELLIPSE_LOWER_LEFT)  fill lower left corner
- *              8 (TFT_ELLIPSE_LOWER_RIGHT) fill lower right corner
- *            to fill the whole ellipse use option value 15 (1 | 2 | 4 | 8)
- * @param color fill color
- */
-void TFT_fillEllipse(uint16_t x0, uint16_t y0, uint16_t rx, uint16_t ry, color_t color, uint8_t option);
-
-
-/**
- * @brief Draw circle arc on screen
- *         Arc drawing angle starts at lower right quadrant of the screen and is offseted by
- *         '_angleOffset' global variable (default: -90 degrees)
- *
- * @param cx arc center X position
- * @param cy arc center Y position
- * @param th thickness of the drawn arc
- * @param ry arc vertical radius
- * @param start arc start angle in degrees
- * @param end arc end angle in degrees
- * @param color arc outline color
- * @param fillcolor arc fill color
- */
-void TFT_drawArc(uint16_t cx, uint16_t cy, uint16_t r, uint16_t th, float start, float end, color_t color, color_t fillcolor);
-
-/**
- * @brief Draw polygon on screen
- *
- * @param cx polygon center X position
- * @param cy arc center Y position
- * @param sides number of polygon sides; MAX_POLIGON_SIDES ~ MAX_POLIGON_SIDES (3 ~ 60)
- * @param diameter diameter of the circle inside which the polygon is drawn
- * @param color polygon outline color
- * @param fill polygon fill color; if same as color, polygon is not filled
- * @param deg polygon rotation angle; 0 ~ 360
- * @param th thickness of the polygon outline
- */
-void TFT_drawPolygon(int cx, int cy, int sides, int diameter, color_t color, color_t fill, int deg, uint8_t th);
-
-/**
  * @brief Set the font used for writing the text to display.
  *
  * ------------------------------------------------------------------------------------
@@ -470,27 +363,12 @@
 void TFT_setRotation(uint8_t rot);
 
 /**
- * @brief Set inverted/normal colors
- *
- * @param mode 0 or 1; use defined constants: INVERT_ON or INVERT_OFF
- */
-void TFT_invertDisplay(const uint8_t mode);
-
-/**
  * @brief Select gamma curve
  * @param gm gama curve, values 0~3
  */
 void TFT_setGammaCurve(uint8_t gm);
 
 /**
- * @brief Compare two color structures
- * @return 0 if equal, 1 if not equal
- *
- * @param c1, c2 colors to be compared
- */
-int TFT_compare_colors(color_t c1, color_t c2);
-
-/**
  * @brief returns the string width in pixels. Useful for positions strings on the screen.
  * @return The string width.
  */
@@ -506,19 +384,6 @@
 void TFT_clearStringRect(int x, int y, char *str);
 
 /**
- * @brief Converts the components of a color, as specified by the HSB model,
- *        to an equivalent set of values for the default RGB model.
- *
- *        The color structure that is returned by HSBtoRGB encodes the value of a color as R, G & B component
- *
- * @param _hue any number, the floor of this number is subtracted from it to create a fraction between 0 and 1.
- * 	       This fractional number is then multiplied by 360 to produce the hue angle in the HSB color model.
- * @param _sat 0 ~ 1.0
- * @param _brightness 0 ~ 1.0
- */
-color_t HSBtoRGB(float _hue, float _sat, float _brightness);
-
-/**
  * @brief Get the touch panel coordinates.
  *        The coordinates are adjusted to screen orientation if raw=0
  *
@@ -530,22 +395,4 @@
  */
 int TFT_read_touch(int *x, int* y, uint8_t raw);
 
-
-/**
- * @brief Compile font c source file to .fnt file
- *        which can be used in TFT_setFont() function to select external font
- *        Created file have the same name as source file and extension .fnt
- *
- * @param fontfile pointer to c source font file name; must have .c extension
- * @param dbg if set to 1, prints debug information
- *
- * @return 0 on success, err no on error
- */
-int compile_font_file(char *fontfile, uint8_t dbg);
-
-/**
- * @brief Get all font's characters to buffer
- */
-void getFontCharacters(uint8_t *buf);
-
 #endif