suzanne.soy/2011-m2s3-city-builder
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Optimisation de l'affichage du terrain avec pasage de tableau de

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sommets. Fonciton displayTree2(). L'ancienne version et
displayTree(Triangle*).
This commit is contained in:
Yoann 2011-10-02 15:33:25 +02:00
parent 9e3b800456
commit 6d12f7f784
1 changed files with 50 additions and 1 deletions
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51
display.c
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@ -7,10 +7,13 @@ int initWindow();
int mainLoop();
void renderScene();
void displayTree(Triangle *t);
void displayTree2();
void Draw_Axes ();
Triangle *t;
int *vertices;
int windowWidth = 1024;
int nbVertex = 0;
int windowHeight = 768;
int xCamera = 1024;
int yCamera = -800;
@ -28,6 +31,7 @@ int initWindow() {
glLoadIdentity();
gluPerspective(70,(double)windowWidth/windowHeight,1,10000);
glEnable(GL_DEPTH_TEST);
glewInit();
return 0;
}
@ -102,12 +106,53 @@ void renderScene() {
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT) ;
drawAxes();
displayTree(t);
displayTree2(t,vertices,0);
//displayTree(t);
glFlush();
SDL_GL_SwapBuffers();
}
int nbTriangles(Triangle *t) {
int sum = 0;
if(t->tLeftChild == NULL) {
return 1;
}
else {
sum += nbTriangles(t->tLeftChild);
sum += nbTriangles(t->tRightChild);
}
return sum;
}
void insertValues(Triangle *t,int *vertices) {
if(t->tLeftChild == NULL) {
vertices[9*nbVertex] = t->vLeft->x;
vertices[9*nbVertex+1] = t->vLeft->y;
vertices[9*nbVertex+2] = t->vLeft->z;
vertices[9*nbVertex+3] = t->vApex->x;
vertices[9*nbVertex+4] = t->vApex->y;
vertices[9*nbVertex+5] = t->vApex->z;
vertices[9*nbVertex+6] = t->vRight->x;
vertices[9*nbVertex+7] = t->vRight->y;
vertices[9*nbVertex+8] = t->vRight->z;
nbVertex++;
}
else {
insertValues(t->tLeftChild,vertices);
insertValues(t->tRightChild,vertices);
}
}
void displayTree2() {
glVertexAttribPointer(0, 3, GL_INT, GL_FALSE, 0, vertices);
glEnableVertexAttribArray(0);
glColor3ub(255,255,255);
glDrawArrays(GL_LINE_LOOP,0, nbVertex*3);
}
void displayTree(Triangle *t) {
if(t->tLeftChild == NULL) {
glBegin(GL_LINE_LOOP);
@ -126,6 +171,10 @@ void displayTree(Triangle *t) {
int main() {
initWindow();
t = initDefaultExample();
vertices = (int*) malloc(sizeof(int) * nbTriangles(t)*9+1);
insertValues(t,vertices);
printf("nombre de triangles : %d\n",nbVertex);
mainLoop();