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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 4 | mjames | 1 | /* |
| 2 | * dials.c |
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| 3 | * |
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| 4 | * Created on: 22 Jan 2016 |
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| 5 | * Author: Mike |
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| 6 | */ |
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| 7 | |||
| 8 | #include "libOLED/ap_math.H" |
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| 9 | #include "libOLED/displayclass.H" |
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| 10 | #include "libOLED/fontclass.H" |
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| 11 | #include "libOLED/displayDial.H" |
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| 12 | |||
| 13 | |||
| 14 | static ap_math math; |
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| 15 | // this is the number of degrees between top centre of scale and |
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| 16 | // left or right hand end of scale : 90 degrees produces a semicircle. |
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| 17 | |||
| 18 | |||
| 5 | mjames | 19 | displayDial_t::displayDial_t(display_t & display,uint8_t x, uint8_t y, uint8_t siz,uint16_t angle_) :m_display(display), m_xo(x),m_yo(y),m_siz(siz),m_a1(angle_) |
| 4 | mjames | 20 | { |
| 21 | |||
| 22 | } |
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| 23 | |||
| 24 | /* position is integer from 0 to SINE_STEPS */ |
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| 25 | void |
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| 5 | mjames | 26 | displayDial_t::draw_needle (int16_t position) |
| 4 | mjames | 27 | { |
| 28 | int ang = math.SINE_SCALING * ((position - (math.SINE_STEPS/2)) * m_a1) / (math.SINE_STEPS/2); |
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| 29 | |||
| 30 | int si = math.ap_sin (ang); |
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| 31 | int co = math.ap_cos (ang); |
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| 32 | |||
| 33 | /* calculate a shift for a second side of the needle */ |
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| 34 | int xl = math.ap_sin (ang - math.SINE_STEPS); |
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| 35 | int yl = math.ap_cos (ang - math.SINE_STEPS); |
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| 36 | |||
| 37 | int si2 = m_siz + 2; |
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| 38 | int si3 = 2 * m_siz / 3; |
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| 39 | |||
| 40 | int xs,ys; |
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| 41 | // three parallel lines |
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| 42 | xs = -xl; |
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| 43 | ys = -yl; |
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| 44 | int step; |
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| 45 | for(step =0; step < 3; step++) |
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| 46 | { |
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| 5 | mjames | 47 | m_display.drawLine (math.AP_SCALE(si*si2-xs) + m_xo, m_yo - math.AP_SCALE(co * si2 - ys), |
| 4 | mjames | 48 | |
| 49 | math.AP_SCALE(si*si3-xs) + m_xo,m_yo - math.AP_SCALE(co * si3 - ys), INVERT); |
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| 50 | xs+=xl; |
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| 51 | ys+=yl; |
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| 52 | } |
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| 53 | } |
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| 54 | |||
| 55 | |||
| 5 | mjames | 56 | void displayDial_t::draw_scale ( int16_t low, int16_t high, uint8_t width, uint8_t num_step,int16_t scale) |
| 4 | mjames | 57 | { |
| 5 | mjames | 58 | |
| 4 | mjames | 59 | int ang; |
| 60 | int sc_low = low/scale; |
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| 61 | int sc_high = high/scale; |
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| 62 | int step = 256 * m_a1 * 2 / (4 * (sc_high - sc_low)); |
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| 63 | int t; |
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| 64 | ang = -m_a1 * 256; |
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| 65 | for (t = sc_low * 4; t <= sc_high * 4; t++) |
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| 66 | { |
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| 67 | int si = math.ap_sin ((ang*math.SINE_SCALING) / 256); |
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| 68 | int co = math.ap_cos ((ang*math.SINE_SCALING) / 256); |
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| 69 | |||
| 70 | int len; |
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| 71 | switch (t % 4) |
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| 72 | { |
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| 73 | case 0: |
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| 74 | len = width; |
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| 75 | break; |
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| 76 | case 1: |
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| 77 | case 3: |
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| 78 | case -1: |
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| 79 | case -3: |
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| 80 | len = width / 4; |
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| 81 | break; |
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| 82 | case 2: |
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| 83 | case -2: |
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| 84 | len = width / 2; |
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| 85 | break; |
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| 86 | } |
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| 87 | |||
| 5 | mjames | 88 | m_display.drawLine (math.AP_SCALE((m_siz)*si) + m_xo, m_yo - math.AP_SCALE((m_siz) * co), |
| 4 | mjames | 89 | math.AP_SCALE((m_siz-len)*si) + m_xo, |
| 90 | m_yo - math.AP_SCALE((m_siz - len) * co), WHITE); |
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| 91 | ang += step; |
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| 92 | } |
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| 93 | |||
| 94 | // font_sig_digits (0,7,0,10,low); |
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| 95 | // font_sig_digits(20,7,1,10,high); |
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| 96 | } |