projection.js

/*
 * Te3ds
 * by Bipeen Acharya, Olivier Mahame, Suraj Bajracharya
 * Submitted to: Dr. Joshua Stough
 * Date: April 9th, 2014
 */

function projectionSquare() {
	var squareNormal = normalize(vec3(0.0, 0.0, 1.0));

	projectionPoints.push(vec4(0.0, 1.0, 0.0, 1.0)); 
	projectionNormals.push(squareNormal);

	projectionPoints.push(vec4(-1.0, 1.0, 0.0, 1.0)); 
	projectionNormals.push(squareNormal);

	projectionPoints.push(vec4(-1.0, 0.0, 0.0, 1.0)); 
	projectionNormals.push(squareNormal);


	projectionPoints.push(vec4(0.0, 1.0, 0.0, 1.0)); 
	projectionNormals.push(squareNormal);

	projectionPoints.push(vec4(0.0, 0.0, 0.0, 1.0)); 
	projectionNormals.push(squareNormal);


	projectionPoints.push(vec4(-1.0, 0.0, 0.0, 1.0)); 
	projectionNormals.push(squareNormal);

	return 6;
}

function cubeProjection(cube){
	var size = projectionSquare();
	var obj = object("SQUARE",1,size);
	var pZ =0;
	var tempZ =[];
	for( var i=0;i<LAST_PIECE_START_INDEX;i++){
		if(table[i].pos[0]== cube.pos[0]&&table[i].pos[1]== cube.pos[1] && table[i].pos[2]< cube.pos[2]){
			tempZ.push(table[i].pos[2]);
		}

	}
	if(tempZ.length >0){
		pZ = Math.max.apply(Math, tempZ)+1.01;
	}
	if (pZ >= 20) {
		gameOver();
		return;
	}
	obj.ctm = translate(cube.pos[0], cube.pos[1], pZ);
	obj.pos = vec3(cube.pos[0], cube.pos[1], pZ);
	var pColor = vec4(0.05 * (20 - pZ),0.05 * (20 - pZ),0.05 * (20 - pZ),1.0);
	obj.materialDiffuse = pColor
	obj.materialSpecular = pColor;
	obj.materialAmbient= pColor;
	projectionTable.push(obj);


}

function lastBlockProjection(){
	projectionTable = [];
	projectionPoints =[];
	projectionNormals =[];

	for( var i=LAST_PIECE_START_INDEX;i< table.length;i++){
		cubeProjection(table[i]);   

	}

	bufferData();


}