int terrainCreateDL(int lighting,int faceType) {
GLuint terrainDL;
int startW,startL;
float factor;
int i,j;
startW = terrainGridWidth / 2 - terrainGridWidth;
startL = - terrainGridLength / 2 + terrainGridLength;
terrainDL = glGenLists(1);
if (lighting)
terrainSimLight = 0;
glNewList(terrainDL,GL_COMPILE);
for (i = 0 ; i < terrainGridLength-1; i++) {
glBegin(faceType);
for(j=0; j < terrainGridWidth; j++) {
if (terrainSimLight && terrainColors != NULL) {
factor = terrainComputeLightFactor(i+1,j,startL,startW);
glColor3f(terrainColors[3*((i+1)*terrainGridWidth + j)] * factor + terrainAmbientCol[0],
terrainColors[3*((i+1)*terrainGridWidth + j)+1] * factor + terrainAmbientCol[1],
terrainColors[3*((i+1)*terrainGridWidth + j)+2] * factor + terrainAmbientCol[2]);
}
else if (terrainSimLight && terrainColors == NULL) {
factor = terrainComputeLightFactor(i+1,j,startL,startW);
glColor3f(terrainDiffuseCol[0] * factor + terrainAmbientCol[0],
terrainDiffuseCol[1] * factor + terrainAmbientCol[1],
terrainDiffuseCol[2] * factor + terrainAmbientCol[2]);
}
else if (terrainColors != NULL)
glColor3f(terrainColors[3*((i+1)*terrainGridWidth + j)],
terrainColors[3*((i+1)*terrainGridWidth + j)+1],
terrainColors[3*((i+1)*terrainGridWidth + j)+2]);
if (terrainNormals != NULL && lighting)
glNormal3f(terrainNormals[3*((i+1)*terrainGridWidth + j)],
terrainNormals[3*((i+1)*terrainGridWidth + j)+1],
terrainNormals[3*((i+1)*terrainGridWidth + j)+2]);
glVertex3f(
((startW + j) + transX) * scaleX,// * stepW,
terrainHeights[(i+1)*terrainGridWidth + (j)] + transY,
((startL - (i+1)) + transZ) * scaleZ);// * stepL);
if (terrainSimLight && terrainColors != NULL) {
factor = terrainComputeLightFactor(i,j,startL,startW);
glColor3f(terrainColors[3*(i*terrainGridWidth + j)] * factor + terrainAmbientCol[0],
terrainColors[3*(i*terrainGridWidth + j)+1] * factor + terrainAmbientCol[1],
terrainColors[3*(i*terrainGridWidth + j)+2] * factor + terrainAmbientCol[2]);
}
else if (terrainSimLight && terrainColors == NULL) {
factor = terrainComputeLightFactor(i,j,startL,startW);
glColor3f(terrainDiffuseCol[0] * factor + terrainAmbientCol[0],
terrainDiffuseCol[1] * factor + terrainAmbientCol[1],
terrainDiffuseCol[2] * factor + terrainAmbientCol[2]);
}
else if (terrainColors != NULL)
glColor3f(terrainColors[3*(i*terrainGridWidth + j)],
terrainColors[3*(i*terrainGridWidth + j)+1],
terrainColors[3*(i*terrainGridWidth + j)+2]);
if (terrainNormals != NULL && lighting)
glNormal3f(terrainNormals[3*(i*terrainGridWidth + j)],
terrainNormals[3*(i*terrainGridWidth + j)+1],
terrainNormals[3*(i*terrainGridWidth + j)+2]);
glVertex3f(
((startW + j) + transX) * scaleX,// * stepW,
terrainHeights[i*terrainGridWidth + j] + transY,
((startL - i) + transZ) * scaleZ);// * stepL);
}
glEnd();
}
glEndList();
return(terrainDL);
}
int terrainCreateDL(float xOffset, float yOffset, float zOffset, int lighting) {
GLuint terrainDL;
float startW,startL,factor;
int i,j;
startW = terrainGridWidth / 2.0 - terrainGridWidth;
startL = - terrainGridLength / 2.0 + terrainGridLength;
terrainDL = glGenLists(1);
if (lighting)
terrainSimLight = 0;
glNewList(terrainDL,GL_COMPILE);
for (i = 0 ; i < terrainGridLength-1; i++) {
glBegin(GL_TRIANGLE_STRIP);
for(j=0; j < terrainGridWidth; j++) {
if (terrainSimLight && terrainColors != NULL) {
factor = terrainComputeLightFactor(i+1,j,startL,startW);
glColor3f(terrainColors[3*((i+1)*terrainGridWidth + j)] * factor + terrainAmbientCol[0],
terrainColors[3*((i+1)*terrainGridWidth + j)+1] * factor + terrainAmbientCol[1],
terrainColors[3*((i+1)*terrainGridWidth + j)+2] * factor + terrainAmbientCol[2]);
}
else if (terrainSimLight && terrainColors == NULL) {
factor = terrainComputeLightFactor(i+1,j,startL,startW);
glColor3f(terrainDiffuseCol[0] * factor + terrainAmbientCol[0],
terrainDiffuseCol[1] * factor + terrainAmbientCol[1],
terrainDiffuseCol[2] * factor + terrainAmbientCol[2]);
}
else if (terrainColors != NULL)
glColor3f(terrainColors[3*((i+1)*terrainGridWidth + j)],
terrainColors[3*((i+1)*terrainGridWidth + j)+1],
terrainColors[3*((i+1)*terrainGridWidth + j)+2]);
if (terrainNormals != NULL && lighting)
glNormal3f(terrainNormals[3*((i+1)*terrainGridWidth + j)],
terrainNormals[3*((i+1)*terrainGridWidth + j)+1],
terrainNormals[3*((i+1)*terrainGridWidth + j)+2]);
glVertex3f(
(startW + j)*terrainStepWidth,// * stepW,
terrainHeights[(i+1)*terrainGridWidth + (j)],
(startL - (i+1))*terrainStepLength);// * stepL);
if (terrainSimLight && !lighting && terrainColors != NULL) {
factor = terrainComputeLightFactor(i,j,startL,startW);
glColor3f(terrainColors[3*(i*terrainGridWidth + j)] * factor + terrainAmbientCol[0],
terrainColors[3*(i*terrainGridWidth + j)+1] * factor + terrainAmbientCol[1],
terrainColors[3*(i*terrainGridWidth + j)+2] * factor + terrainAmbientCol[2]);
}
else if (terrainSimLight && !lighting && terrainColors == NULL) {
factor = terrainComputeLightFactor(i,j,startL,startW);
glColor3f(terrainDiffuseCol[0] * factor + terrainAmbientCol[0],
terrainDiffuseCol[1] * factor + terrainAmbientCol[1],
terrainDiffuseCol[2] * factor + terrainAmbientCol[2]);
}
else if (terrainColors != NULL)
glColor3f(terrainColors[3*(i*terrainGridWidth + j)],
terrainColors[3*(i*terrainGridWidth + j)+1],
terrainColors[3*(i*terrainGridWidth + j)+2]);
if (terrainNormals != NULL && lighting)
glNormal3f(terrainNormals[3*(i*terrainGridWidth + j)],
terrainNormals[3*(i*terrainGridWidth + j)+1],
terrainNormals[3*(i*terrainGridWidth + j)+2]);
glVertex3f(
(startW + j)*terrainStepWidth,// * stepW,
terrainHeights[i*terrainGridWidth + j],
(startL - i)*terrainStepLength);// * stepL);
}
glEnd();
}
glEndList();
return(terrainDL);
}
