****************************************************************************/
import "ecere"
import "engineSettings"
-import "dted"
import "dna"
+import "terrain"
define BACKGROUND = white;
define speed = 200;
+// --- Terrain Data Loading ---
+static Elevation heightMap[1025 * 1025];
+
+#define ALTITUDE_FACTOR 1
+#define ALTITUDE_OFFSET 0 // -5000
+
+#define EARTH_RADIUS 6367000
+
+#define CELL_LAT_POINTS 1201
+#define CELL_LON_POINTS 1201
+
+#define RESOLUTION_LAT (EARTH_RADIUS * ((Pi / 180) / (CELL_LAT_POINTS - 1)))
+#define RESOLUTION_LON(LATITUDE) (EARTH_RADIUS * ((float)sin(LATITUDE) * ((Pi / 180) / (CELL_LON_POINTS - 1))))
+
+/*
+struct ElevationColor
+{
+ int altitude;
+ ColorAlpha color;
+};
+
+static Array<ElevationColor> colorMap
+{ [
+ { 0, Color { 0, 0, 0 } },
+ { 1100, Color { 28, 24, 101 } },
+ { 1200, Color { 17, 138, 150 } },
+ { 1300, Color { 0,75,0 } },
+ { 1500, Color { 244,244,144 } },
+ { 2000, Color { 79, 45, 8 } },
+ { 2300, Color { 129, 65, 58 } },
+ { 2600, Color { 185, 185, 185 } },
+ { 3000, Color { 255, 255, 255 } }
+] };
+
+static void OutputTexture(String fileName)
+{
+ Bitmap bitmap { };
+ if(bitmap.Allocate(null, 1025, 1025, 0, pixelFormat888, false))
+ {
+ ColorAlpha * picture = (ColorAlpha *)bitmap.picture;
+ int y, x;
+
+ Array<ColorAlpha> colorTable { size = 65536 };
+ int altitude;
+ ElevationColor * curKey = colorMap.array, * nextKey = colorMap.array;
+ int keyNum = 0, nextKeyNum = 0;
+
+ for(altitude = -32768; altitude<32768; altitude++)
+ {
+ int a = 255;
+ Color color;
+ while(altitude > nextKey->altitude)
+ {
+ curKey = nextKey; keyNum = nextKeyNum;
+ if(keyNum < colorMap.count - 1)
+ {
+ nextKey = curKey + 1;
+ nextKeyNum = keyNum + 1;
+ }
+ else
+ break;
+ }
+
+ if(nextKey->altitude != curKey->altitude)
+ {
+ float scale = (float) (altitude - curKey->altitude) / (nextKey->altitude - curKey->altitude);
+ Color cColor = curKey->color, nColor = nextKey->color;
+ int cr = cColor.r, cg = cColor.g, cb = cColor.b;
+ int nr = nColor.r, ng = nColor.g, nb = nColor.b;
+ int r = (int)(cr + (nr - cr) * scale);
+ int g = (int)(cg + (ng - cg) * scale);
+ int b = (int)(cb + (nb - cb) * scale);
+ r = Max(Min(r, 255),0);
+ g = Max(Min(g, 255),0);
+ b = Max(Min(b, 255),0);
+ color = { (byte)r, (byte)g, (byte)b };
+ }
+ else
+ color = curKey->color;
+ colorTable[altitude + 32768] = { 255, color };
+ }
+
+ for(y = 0; y < bitmap.height; y++)
+ for(x = 0; x < bitmap.width; x++)
+ picture[y * bitmap.width + x] = colorTable[heightMap[y * 1025 + x] + 32768];
+
+ delete colorTable;
+ bitmap.Save(fileName, null, null);
+ }
+ delete bitmap;
+}
+*/
+
+static bool LoadTerrain(Terrain terrain, char * fileName, Angle lat)
+{
+ bool result = false;
+ File f = FileOpen(fileName, read);
+ if(f)
+ {
+ int y;
+ float resLon = (float)RESOLUTION_LON(lat);
+ for(y = 0; y<1025; y++)
+ {
+ int x;
+ byte buffer[1201 * 2];
+ if(f.Read(buffer, sizeof(uint16), 1201) < 1201)
+ break;
+ for(x = 0; x<1025; x++)
+ {
+ unsigned char b0 = buffer[2*x], b1 = buffer[2*x+1];
+ short value = (short)((((int)b0 << 8) | b1) - ((b0 & 0x80) ? 0x10000 : 0));
+ if(value > 20000) value = -32768;
+ heightMap[y*1025+x] = value * ALTITUDE_FACTOR + ALTITUDE_OFFSET;
+ }
+ }
+
+ // OutputTexture("res/texture.png");
+
+ if(terrain.Create(heightMap, 16, 1025, 2, resLon, RESOLUTION_LAT, 512,512))
+ result = true;
+ delete f;
+ }
+ return result;
+}
+
class Scene : Window
{
bool filled;
Light light;
Terrain terrain { };
Bitmap textures[16];
- Bitmap detail { };
+ //Bitmap detail { };
Object player { };
SkyBox sky { size = { 100, 100, 100 }, folder = ":skycube", extension = "jpg" };
DNAModel dna
Scene()
{
- LoadDTEDTerrain(terrain, ":N19.DT1");
+ // Load terrain from SRTM data ( 3 arc seconds data from http://www.viewfinderpanoramas.org/ , L12 Cell)
+ LoadTerrain(terrain, ":N45W110.hgt", Degrees { 45 });
frame = 0;
fogDensity = 0.0001f;
light.orientation = { 1,0,0,0 };
light.orientation.RotatePitch(30);
- if(map.Load(":dted.pcx", null, null))
+ if(map.Load(":texture.png", null, null))
{
int c;
int across = 4;
+ map.Convert(null, pixelFormat888, null);
map.SmoothEdges(256);
for(c = 0; c < across * across; c++)
{
dna.Create(displaySystem);
if(dna)
- dna.transform.position.y = -3000;
+ dna.transform.position.y = -2200;
dna.UpdateTransform();
if(player)
{
- player.transform.position.y = -3000;
+ player.transform.position.y = -2200;
player.transform.position.x = 1000;
player.transform.orientation = Euler { yaw = 230 };
}
- detail.Load(":detail.pcx", null, displaySystem);
- displaySystem.AddTexture("DetailTexture", detail);
+ /*detail.Load(":detail.pcx", null, displaySystem);
+ displaySystem.AddTexture("DetailTexture", detail);*/
sky.InitializeMesh(displaySystem);
sky.Create(displaySystem);
+++ /dev/null
-/****************************************************************************
- Ecere Terrain Engine Demonstration
-
- Copyright (c) 2001-2010 Jerome Jacovella-St-Louis
- All Rights Reserved.
-
- dted.ec - DTED data loader
-****************************************************************************/
-import "terrain"
-import "ecere"
-
-#include <math.h>
-
-// --- DTED Data Loading ---
-static Elevation heightMap[1025 * 1025];
-
-#define ALTITUDE_FACTOR 1
-#define ALTITUDE_OFFSET 0 // -5000
-
-#define EARTH_RADIUS 6367000
-
-#define CELL_LAT_POINTS 1201
-#define CELL_LON_POINTS 1201
-
-#define LATITUDE Degrees { 44.5 }
-
-#define RESOLUTION_LAT (EARTH_RADIUS * ((Pi / 180) / (CELL_LAT_POINTS - 1)))
-#define RESOLUTION_LON (EARTH_RADIUS * ((float)sin(LATITUDE) * ((Pi / 180) / (CELL_LON_POINTS - 1))))
-
-typedef struct
-{
- byte label[80];
- byte ident[648];
- byte accuracy[2700];
-} DTEDHeader;
-
-bool LoadDTEDTerrain(Terrain terrain, char * fileName)
-{
- bool result = false;
- File f = FileOpen(fileName, read);
- if(f)
- {
- DTEDHeader header;
- if(f.Read(&header, 1, sizeof(header)))
- {
- int y;
- short buffer[1207];
-
- for(y = 0; y<1025; y++)
- {
- int x;
-
- if(f.Read(buffer, sizeof(uint16), 1207) < 1207)
- break;
-
- for(x = 0; x<1025; x++)
- {
- uint16 value = buffer[x+4];
- value = ((value & 0xFF00) >> 8) | ((value & 0xFF) << 8);
- heightMap[y*1025+x] = (short)value * ALTITUDE_FACTOR + ALTITUDE_OFFSET;
- }
- }
- if(terrain.Create(heightMap, 16, 1025, 2, RESOLUTION_LON, RESOLUTION_LAT, 512,512))
- result = true;
- }
- delete f;
- }
- return result;
-}
Ecere Software / sdk / commitdiff
