1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
|
/*
* Time-stamp: <98/11/03 14:39:36 panic>
* Author: The C-Mix Project <cmix@diku.dk>
* Arne John Glenstrup <panic@diku.dk>
* Contents: Functions for showing the image using the PTC API
* from http://www.gaffer.org/ptc
*/
#include "ptc/ptc.h"
#include <stdio.h>
// create format
static Format format(32,0x00FF0000,0x0000FF00,0x000000FF);
static Console console;
static Surface* surface;
static int32 *pixels;
static int windowHeight, windowWidth;
static int use_color;
typedef unsigned char uint8;
extern "C" void initWindow(char *title, int height, int width, int use_c) {
windowWidth = width; windowHeight = height; use_color = use_c;
try
{
// create console
console.open(title, width, height, format);
// create surface
surface = new Surface(width, height, format);
// lock surface
pixels = (int32*) surface->lock();
}
catch (Error &error)
{
// report error
error.report();
}
}
extern "C" void closeWindow() { }
static void plotColor(int x, int y, double red, double green, double blue) {
uint8 r, g, b;
r = (uint8)(red * 256.0);
g = (uint8)(green * 256.0);
b = (uint8)(blue * 256.0);
// draw color [r,g,b] at position [x,y]
pixels[x + (windowHeight - 1 - y) * windowWidth] = (r << 16) + (g << 8) + b;
}
static void plotGrey(int x, int y, double red, double green, double blue) {
uint8 r, g, b;
double intensity;
intensity = (red + green + blue) / 3;
r = (uint8)(intensity * 256.0);
g = (uint8)(intensity * 256.0);
b = (uint8)(intensity * 256.0);
// draw color [r,g,b] at position [x,y]
pixels[x + (windowHeight - 1 - y) * windowWidth] = (r << 16) + (g << 8) + b;
}
extern "C" void plot(int x, int y, double red, double green, double blue) {
if (use_color)
plotColor(x, y, red, green, blue);
else
plotGrey(x, y, red, green, blue);
}
extern "C" void refreshLine (int y) {
// unlock surface
surface->unlock();
// copy surface to console area
surface->copy(console,
Area(0, windowHeight - y - 1, windowWidth, windowHeight - y),
Area(0, windowHeight - y - 1, windowWidth, windowHeight - y));
// update console (Area update is not meant as a partial update!!)
// Use a partial copy for that. Area update is only there to speed
// up windowed display and does NOT have an effect in DGA mode.
console.update(Area(0, windowHeight - y - 1, windowWidth, windowHeight - y));
//console->update();
pixels = (int32*) surface->lock();
}
extern "C" int waitKeyOrClick() {
int ch;
// loop until a key is pressed
while (!(ch = console.key()))
console.update(Area(0, 0, windowWidth, windowHeight));
console.read();
return ch;
}
|
