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move the voxel system to 40,0,40, only re-render on new voxels

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This commit is contained in:
Stephen Birarda 2013-03-28 14:35:02 -07:00
parent 1f98929503
commit 9cd314d3c4
1 changed files with 12 additions and 6 deletions
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18
interface/src/VoxelSystem.cpp
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@ -230,8 +230,6 @@ void VoxelSystem::parseData(void *data, int size) {
// output the bits received from the voxel server // output the bits received from the voxel server
unsigned char *voxelData = (unsigned char *) data + 1; unsigned char *voxelData = (unsigned char *) data + 1;
printf("Received a packet of %d bytes from VS\n", size);
// ask the VoxelTree to read the bitstream into the tree // ask the VoxelTree to read the bitstream into the tree
tree->readBitstreamToTree(voxelData, size - 1); tree->readBitstreamToTree(voxelData, size - 1);
@ -240,10 +238,15 @@ void VoxelSystem::parseData(void *data, int size) {
// call recursive function to populate in memory arrays // call recursive function to populate in memory arrays
// it will return the number of voxels added // it will return the number of voxels added
voxelsRendered = treeToArrays(tree->rootNode); int newVoxels = treeToArrays(tree->rootNode);
// set the boolean if there are any voxels to be rendered so we re-fill the VBOs if (newVoxels > voxelsRendered) {
voxelsToRender = (voxelsRendered > 0);
voxelsRendered = newVoxels;
// set the boolean if there are any voxels to be rendered so we re-fill the VBOs
voxelsToRender = true;
}
} }
int VoxelSystem::treeToArrays(VoxelNode *currentNode) { int VoxelSystem::treeToArrays(VoxelNode *currentNode) {
@ -318,7 +321,9 @@ void VoxelSystem::init() {
// VBO for the indicesArray // VBO for the indicesArray
glGenBuffers(1, &vboIndicesID); glGenBuffers(1, &vboIndicesID);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, vboIndicesID); glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, vboIndicesID);
glBufferData(GL_ELEMENT_ARRAY_BUFFER, INDICES_PER_VOXEL * sizeof(GLuint) * MAX_VOXELS_PER_SYSTEM, indicesArray, GL_STATIC_DRAW); glBufferData(GL_ELEMENT_ARRAY_BUFFER,
INDICES_PER_VOXEL * sizeof(GLuint) * MAX_VOXELS_PER_SYSTEM,
indicesArray, GL_STATIC_DRAW);
// delete the indices array that is no longer needed // delete the indices array that is no longer needed
delete[] indicesArray; delete[] indicesArray;
@ -352,6 +357,7 @@ void VoxelSystem::render() {
// draw the number of voxels we have // draw the number of voxels we have
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, vboIndicesID); glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, vboIndicesID);
glTranslatef(40, 0, 40);
glScalef(10, 10, 10); glScalef(10, 10, 10);
glDrawElements(GL_TRIANGLES, 36 * voxelsRendered, GL_UNSIGNED_INT, 0); glDrawElements(GL_TRIANGLES, 36 * voxelsRendered, GL_UNSIGNED_INT, 0);