From f5a466774e2378af862c859ea7445e701a835848 Mon Sep 17 00:00:00 2001
From: "ottavio.buonomo" <ottavio.buonomo@etu.hesge.ch>
Date: Thu, 17 Dec 2020 21:06:56 +0100
Subject: [PATCH] Lab4
---
lab4/lib/cuon-matrix.js | 741 +++++++++++++++++++++++++++++++++++++++
lab4/src/lab4.html | 17 +-
lab4/src/lab4.js | 601 ++++++++++++++++++++++++++++++-
lab4/src/pyramidModel.js | 90 +++++
4 files changed, 1433 insertions(+), 16 deletions(-)
create mode 100644 lab4/lib/cuon-matrix.js
create mode 100644 lab4/src/pyramidModel.js
diff --git a/lab4/lib/cuon-matrix.js b/lab4/lib/cuon-matrix.js
new file mode 100644
index 0000000..b67a5dd
--- /dev/null
+++ b/lab4/lib/cuon-matrix.js
@@ -0,0 +1,741 @@
+// cuon-matrix.js (c) 2012 kanda and matsuda
+/**
+ * This is a class treating 4x4 matrix.
+ * This class contains the function that is equivalent to OpenGL matrix stack.
+ * The matrix after conversion is calculated by multiplying a conversion matrix from the right.
+ * The matrix is replaced by the calculated result.
+ */
+
+/**
+ * Constructor of Matrix4
+ * If opt_src is specified, new matrix is initialized by opt_src.
+ * Otherwise, new matrix is initialized by identity matrix.
+ * @param opt_src source matrix(option)
+ */
+var Matrix4 = function(opt_src) {
+ var i, s, d;
+ if (opt_src && typeof opt_src === 'object' && opt_src.hasOwnProperty('elements')) {
+ s = opt_src.elements;
+ d = new Float32Array(16);
+ for (i = 0; i < 16; ++i) {
+ d[i] = s[i];
+ }
+ this.elements = d;
+ } else {
+ this.elements = new Float32Array([1,0,0,0, 0,1,0,0, 0,0,1,0, 0,0,0,1]);
+ }
+};
+
+/**
+ * Set the identity matrix.
+ * @return this
+ */
+Matrix4.prototype.setIdentity = function() {
+ var e = this.elements;
+ e[0] = 1; e[4] = 0; e[8] = 0; e[12] = 0;
+ e[1] = 0; e[5] = 1; e[9] = 0; e[13] = 0;
+ e[2] = 0; e[6] = 0; e[10] = 1; e[14] = 0;
+ e[3] = 0; e[7] = 0; e[11] = 0; e[15] = 1;
+ return this;
+};
+
+/**
+ * Copy matrix.
+ * @param src source matrix
+ * @return this
+ */
+Matrix4.prototype.set = function(src) {
+ var i, s, d;
+
+ s = src.elements;
+ d = this.elements;
+
+ if (s === d) {
+ return;
+ }
+
+ for (i = 0; i < 16; ++i) {
+ d[i] = s[i];
+ }
+
+ return this;
+};
+
+/**
+ * Multiply the matrix from the right.
+ * @param other The multiply matrix
+ * @return this
+ */
+Matrix4.prototype.concat = function(other) {
+ var i, e, a, b, ai0, ai1, ai2, ai3;
+
+ // Calculate e = a * b
+ e = this.elements;
+ a = this.elements;
+ b = other.elements;
+
+ // If e equals b, copy b to temporary matrix.
+ if (e === b) {
+ b = new Float32Array(16);
+ for (i = 0; i < 16; ++i) {
+ b[i] = e[i];
+ }
+ }
+
+ for (i = 0; i < 4; i++) {
+ ai0=a[i]; ai1=a[i+4]; ai2=a[i+8]; ai3=a[i+12];
+ e[i] = ai0 * b[0] + ai1 * b[1] + ai2 * b[2] + ai3 * b[3];
+ e[i+4] = ai0 * b[4] + ai1 * b[5] + ai2 * b[6] + ai3 * b[7];
+ e[i+8] = ai0 * b[8] + ai1 * b[9] + ai2 * b[10] + ai3 * b[11];
+ e[i+12] = ai0 * b[12] + ai1 * b[13] + ai2 * b[14] + ai3 * b[15];
+ }
+
+ return this;
+};
+Matrix4.prototype.multiply = Matrix4.prototype.concat;
+
+/**
+ * Multiply the three-dimensional vector.
+ * @param pos The multiply vector
+ * @return The result of multiplication(Float32Array)
+ */
+Matrix4.prototype.multiplyVector3 = function(pos) {
+ var e = this.elements;
+ var p = pos.elements;
+ var v = new Vector3();
+ var result = v.elements;
+
+ result[0] = p[0] * e[0] + p[1] * e[4] + p[2] * e[ 8] + e[12];
+ result[1] = p[0] * e[1] + p[1] * e[5] + p[2] * e[ 9] + e[13];
+ result[2] = p[0] * e[2] + p[1] * e[6] + p[2] * e[10] + e[14];
+
+ return v;
+};
+
+/**
+ * Multiply the four-dimensional vector.
+ * @param pos The multiply vector
+ * @return The result of multiplication(Float32Array)
+ */
+Matrix4.prototype.multiplyVector4 = function(pos) {
+ var e = this.elements;
+ var p = pos.elements;
+ var v = new Vector4();
+ var result = v.elements;
+
+ result[0] = p[0] * e[0] + p[1] * e[4] + p[2] * e[ 8] + p[3] * e[12];
+ result[1] = p[0] * e[1] + p[1] * e[5] + p[2] * e[ 9] + p[3] * e[13];
+ result[2] = p[0] * e[2] + p[1] * e[6] + p[2] * e[10] + p[3] * e[14];
+ result[3] = p[0] * e[3] + p[1] * e[7] + p[2] * e[11] + p[3] * e[15];
+
+ return v;
+};
+
+/**
+ * Transpose the matrix.
+ * @return this
+ */
+Matrix4.prototype.transpose = function() {
+ var e, t;
+
+ e = this.elements;
+
+ t = e[ 1]; e[ 1] = e[ 4]; e[ 4] = t;
+ t = e[ 2]; e[ 2] = e[ 8]; e[ 8] = t;
+ t = e[ 3]; e[ 3] = e[12]; e[12] = t;
+ t = e[ 6]; e[ 6] = e[ 9]; e[ 9] = t;
+ t = e[ 7]; e[ 7] = e[13]; e[13] = t;
+ t = e[11]; e[11] = e[14]; e[14] = t;
+
+ return this;
+};
+
+/**
+ * Calculate the inverse matrix of specified matrix, and set to this.
+ * @param other The source matrix
+ * @return this
+ */
+Matrix4.prototype.setInverseOf = function(other) {
+ var i, s, d, inv, det;
+
+ s = other.elements;
+ d = this.elements;
+ inv = new Float32Array(16);
+
+ inv[0] = s[5]*s[10]*s[15] - s[5] *s[11]*s[14] - s[9] *s[6]*s[15]
+ + s[9]*s[7] *s[14] + s[13]*s[6] *s[11] - s[13]*s[7]*s[10];
+ inv[4] = - s[4]*s[10]*s[15] + s[4] *s[11]*s[14] + s[8] *s[6]*s[15]
+ - s[8]*s[7] *s[14] - s[12]*s[6] *s[11] + s[12]*s[7]*s[10];
+ inv[8] = s[4]*s[9] *s[15] - s[4] *s[11]*s[13] - s[8] *s[5]*s[15]
+ + s[8]*s[7] *s[13] + s[12]*s[5] *s[11] - s[12]*s[7]*s[9];
+ inv[12] = - s[4]*s[9] *s[14] + s[4] *s[10]*s[13] + s[8] *s[5]*s[14]
+ - s[8]*s[6] *s[13] - s[12]*s[5] *s[10] + s[12]*s[6]*s[9];
+
+ inv[1] = - s[1]*s[10]*s[15] + s[1] *s[11]*s[14] + s[9] *s[2]*s[15]
+ - s[9]*s[3] *s[14] - s[13]*s[2] *s[11] + s[13]*s[3]*s[10];
+ inv[5] = s[0]*s[10]*s[15] - s[0] *s[11]*s[14] - s[8] *s[2]*s[15]
+ + s[8]*s[3] *s[14] + s[12]*s[2] *s[11] - s[12]*s[3]*s[10];
+ inv[9] = - s[0]*s[9] *s[15] + s[0] *s[11]*s[13] + s[8] *s[1]*s[15]
+ - s[8]*s[3] *s[13] - s[12]*s[1] *s[11] + s[12]*s[3]*s[9];
+ inv[13] = s[0]*s[9] *s[14] - s[0] *s[10]*s[13] - s[8] *s[1]*s[14]
+ + s[8]*s[2] *s[13] + s[12]*s[1] *s[10] - s[12]*s[2]*s[9];
+
+ inv[2] = s[1]*s[6]*s[15] - s[1] *s[7]*s[14] - s[5] *s[2]*s[15]
+ + s[5]*s[3]*s[14] + s[13]*s[2]*s[7] - s[13]*s[3]*s[6];
+ inv[6] = - s[0]*s[6]*s[15] + s[0] *s[7]*s[14] + s[4] *s[2]*s[15]
+ - s[4]*s[3]*s[14] - s[12]*s[2]*s[7] + s[12]*s[3]*s[6];
+ inv[10] = s[0]*s[5]*s[15] - s[0] *s[7]*s[13] - s[4] *s[1]*s[15]
+ + s[4]*s[3]*s[13] + s[12]*s[1]*s[7] - s[12]*s[3]*s[5];
+ inv[14] = - s[0]*s[5]*s[14] + s[0] *s[6]*s[13] + s[4] *s[1]*s[14]
+ - s[4]*s[2]*s[13] - s[12]*s[1]*s[6] + s[12]*s[2]*s[5];
+
+ inv[3] = - s[1]*s[6]*s[11] + s[1]*s[7]*s[10] + s[5]*s[2]*s[11]
+ - s[5]*s[3]*s[10] - s[9]*s[2]*s[7] + s[9]*s[3]*s[6];
+ inv[7] = s[0]*s[6]*s[11] - s[0]*s[7]*s[10] - s[4]*s[2]*s[11]
+ + s[4]*s[3]*s[10] + s[8]*s[2]*s[7] - s[8]*s[3]*s[6];
+ inv[11] = - s[0]*s[5]*s[11] + s[0]*s[7]*s[9] + s[4]*s[1]*s[11]
+ - s[4]*s[3]*s[9] - s[8]*s[1]*s[7] + s[8]*s[3]*s[5];
+ inv[15] = s[0]*s[5]*s[10] - s[0]*s[6]*s[9] - s[4]*s[1]*s[10]
+ + s[4]*s[2]*s[9] + s[8]*s[1]*s[6] - s[8]*s[2]*s[5];
+
+ det = s[0]*inv[0] + s[1]*inv[4] + s[2]*inv[8] + s[3]*inv[12];
+ if (det === 0) {
+ return this;
+ }
+
+ det = 1 / det;
+ for (i = 0; i < 16; i++) {
+ d[i] = inv[i] * det;
+ }
+
+ return this;
+};
+
+/**
+ * Calculate the inverse matrix of this, and set to this.
+ * @return this
+ */
+Matrix4.prototype.invert = function() {
+ return this.setInverseOf(this);
+};
+
+/**
+ * Set the orthographic projection matrix.
+ * @param left The coordinate of the left of clipping plane.
+ * @param right The coordinate of the right of clipping plane.
+ * @param bottom The coordinate of the bottom of clipping plane.
+ * @param top The coordinate of the top top clipping plane.
+ * @param near The distances to the nearer depth clipping plane. This value is minus if the plane is to be behind the viewer.
+ * @param far The distances to the farther depth clipping plane. This value is minus if the plane is to be behind the viewer.
+ * @return this
+ */
+Matrix4.prototype.setOrtho = function(left, right, bottom, top, near, far) {
+ var e, rw, rh, rd;
+
+ if (left === right || bottom === top || near === far) {
+ throw 'null frustum';
+ }
+
+ rw = 1 / (right - left);
+ rh = 1 / (top - bottom);
+ rd = 1 / (far - near);
+
+ e = this.elements;
+
+ e[0] = 2 * rw;
+ e[1] = 0;
+ e[2] = 0;
+ e[3] = 0;
+
+ e[4] = 0;
+ e[5] = 2 * rh;
+ e[6] = 0;
+ e[7] = 0;
+
+ e[8] = 0;
+ e[9] = 0;
+ e[10] = -2 * rd;
+ e[11] = 0;
+
+ e[12] = -(right + left) * rw;
+ e[13] = -(top + bottom) * rh;
+ e[14] = -(far + near) * rd;
+ e[15] = 1;
+
+ return this;
+};
+
+/**
+ * Multiply the orthographic projection matrix from the right.
+ * @param left The coordinate of the left of clipping plane.
+ * @param right The coordinate of the right of clipping plane.
+ * @param bottom The coordinate of the bottom of clipping plane.
+ * @param top The coordinate of the top top clipping plane.
+ * @param near The distances to the nearer depth clipping plane. This value is minus if the plane is to be behind the viewer.
+ * @param far The distances to the farther depth clipping plane. This value is minus if the plane is to be behind the viewer.
+ * @return this
+ */
+Matrix4.prototype.ortho = function(left, right, bottom, top, near, far) {
+ return this.concat(new Matrix4().setOrtho(left, right, bottom, top, near, far));
+};
+
+/**
+ * Set the perspective projection matrix.
+ * @param left The coordinate of the left of clipping plane.
+ * @param right The coordinate of the right of clipping plane.
+ * @param bottom The coordinate of the bottom of clipping plane.
+ * @param top The coordinate of the top top clipping plane.
+ * @param near The distances to the nearer depth clipping plane. This value must be plus value.
+ * @param far The distances to the farther depth clipping plane. This value must be plus value.
+ * @return this
+ */
+Matrix4.prototype.setFrustum = function(left, right, bottom, top, near, far) {
+ var e, rw, rh, rd;
+
+ if (left === right || top === bottom || near === far) {
+ throw 'null frustum';
+ }
+ if (near <= 0) {
+ throw 'near <= 0';
+ }
+ if (far <= 0) {
+ throw 'far <= 0';
+ }
+
+ rw = 1 / (right - left);
+ rh = 1 / (top - bottom);
+ rd = 1 / (far - near);
+
+ e = this.elements;
+
+ e[ 0] = 2 * near * rw;
+ e[ 1] = 0;
+ e[ 2] = 0;
+ e[ 3] = 0;
+
+ e[ 4] = 0;
+ e[ 5] = 2 * near * rh;
+ e[ 6] = 0;
+ e[ 7] = 0;
+
+ e[ 8] = (right + left) * rw;
+ e[ 9] = (top + bottom) * rh;
+ e[10] = -(far + near) * rd;
+ e[11] = -1;
+
+ e[12] = 0;
+ e[13] = 0;
+ e[14] = -2 * near * far * rd;
+ e[15] = 0;
+
+ return this;
+};
+
+/**
+ * Multiply the perspective projection matrix from the right.
+ * @param left The coordinate of the left of clipping plane.
+ * @param right The coordinate of the right of clipping plane.
+ * @param bottom The coordinate of the bottom of clipping plane.
+ * @param top The coordinate of the top top clipping plane.
+ * @param near The distances to the nearer depth clipping plane. This value must be plus value.
+ * @param far The distances to the farther depth clipping plane. This value must be plus value.
+ * @return this
+ */
+Matrix4.prototype.frustum = function(left, right, bottom, top, near, far) {
+ return this.concat(new Matrix4().setFrustum(left, right, bottom, top, near, far));
+};
+
+/**
+ * Set the perspective projection matrix by fovy and aspect.
+ * @param fovy The angle between the upper and lower sides of the frustum.
+ * @param aspect The aspect ratio of the frustum. (width/height)
+ * @param near The distances to the nearer depth clipping plane. This value must be plus value.
+ * @param far The distances to the farther depth clipping plane. This value must be plus value.
+ * @return this
+ */
+Matrix4.prototype.setPerspective = function(fovy, aspect, near, far) {
+ var e, rd, s, ct;
+
+ if (near === far || aspect === 0) {
+ throw 'null frustum';
+ }
+ if (near <= 0) {
+ throw 'near <= 0';
+ }
+ if (far <= 0) {
+ throw 'far <= 0';
+ }
+
+ fovy = Math.PI * fovy / 180 / 2;
+ s = Math.sin(fovy);
+ if (s === 0) {
+ throw 'null frustum';
+ }
+
+ rd = 1 / (far - near);
+ ct = Math.cos(fovy) / s;
+
+ e = this.elements;
+
+ e[0] = ct / aspect;
+ e[1] = 0;
+ e[2] = 0;
+ e[3] = 0;
+
+ e[4] = 0;
+ e[5] = ct;
+ e[6] = 0;
+ e[7] = 0;
+
+ e[8] = 0;
+ e[9] = 0;
+ e[10] = -(far + near) * rd;
+ e[11] = -1;
+
+ e[12] = 0;
+ e[13] = 0;
+ e[14] = -2 * near * far * rd;
+ e[15] = 0;
+
+ return this;
+};
+
+/**
+ * Multiply the perspective projection matrix from the right.
+ * @param fovy The angle between the upper and lower sides of the frustum.
+ * @param aspect The aspect ratio of the frustum. (width/height)
+ * @param near The distances to the nearer depth clipping plane. This value must be plus value.
+ * @param far The distances to the farther depth clipping plane. This value must be plus value.
+ * @return this
+ */
+Matrix4.prototype.perspective = function(fovy, aspect, near, far) {
+ return this.concat(new Matrix4().setPerspective(fovy, aspect, near, far));
+};
+
+/**
+ * Set the matrix for scaling.
+ * @param x The scale factor along the X axis
+ * @param y The scale factor along the Y axis
+ * @param z The scale factor along the Z axis
+ * @return this
+ */
+Matrix4.prototype.setScale = function(x, y, z) {
+ var e = this.elements;
+ e[0] = x; e[4] = 0; e[8] = 0; e[12] = 0;
+ e[1] = 0; e[5] = y; e[9] = 0; e[13] = 0;
+ e[2] = 0; e[6] = 0; e[10] = z; e[14] = 0;
+ e[3] = 0; e[7] = 0; e[11] = 0; e[15] = 1;
+ return this;
+};
+
+/**
+ * Multiply the matrix for scaling from the right.
+ * @param x The scale factor along the X axis
+ * @param y The scale factor along the Y axis
+ * @param z The scale factor along the Z axis
+ * @return this
+ */
+Matrix4.prototype.scale = function(x, y, z) {
+ var e = this.elements;
+ e[0] *= x; e[4] *= y; e[8] *= z;
+ e[1] *= x; e[5] *= y; e[9] *= z;
+ e[2] *= x; e[6] *= y; e[10] *= z;
+ e[3] *= x; e[7] *= y; e[11] *= z;
+ return this;
+};
+
+/**
+ * Set the matrix for translation.
+ * @param x The X value of a translation.
+ * @param y The Y value of a translation.
+ * @param z The Z value of a translation.
+ * @return this
+ */
+Matrix4.prototype.setTranslate = function(x, y, z) {
+ var e = this.elements;
+ e[0] = 1; e[4] = 0; e[8] = 0; e[12] = x;
+ e[1] = 0; e[5] = 1; e[9] = 0; e[13] = y;
+ e[2] = 0; e[6] = 0; e[10] = 1; e[14] = z;
+ e[3] = 0; e[7] = 0; e[11] = 0; e[15] = 1;
+ return this;
+};
+
+/**
+ * Multiply the matrix for translation from the right.
+ * @param x The X value of a translation.
+ * @param y The Y value of a translation.
+ * @param z The Z value of a translation.
+ * @return this
+ */
+Matrix4.prototype.translate = function(x, y, z) {
+ var e = this.elements;
+ e[12] += e[0] * x + e[4] * y + e[8] * z;
+ e[13] += e[1] * x + e[5] * y + e[9] * z;
+ e[14] += e[2] * x + e[6] * y + e[10] * z;
+ e[15] += e[3] * x + e[7] * y + e[11] * z;
+ return this;
+};
+
+/**
+ * Set the matrix for rotation.
+ * The vector of rotation axis may not be normalized.
+ * @param angle The angle of rotation (degrees)
+ * @param x The X coordinate of vector of rotation axis.
+ * @param y The Y coordinate of vector of rotation axis.
+ * @param z The Z coordinate of vector of rotation axis.
+ * @return this
+ */
+Matrix4.prototype.setRotate = function(angle, x, y, z) {
+ var e, s, c, len, rlen, nc, xy, yz, zx, xs, ys, zs;
+
+ angle = Math.PI * angle / 180;
+ e = this.elements;
+
+ s = Math.sin(angle);
+ c = Math.cos(angle);
+
+ if (0 !== x && 0 === y && 0 === z) {
+ // Rotation around X axis
+ if (x < 0) {
+ s = -s;
+ }
+ e[0] = 1; e[4] = 0; e[ 8] = 0; e[12] = 0;
+ e[1] = 0; e[5] = c; e[ 9] =-s; e[13] = 0;
+ e[2] = 0; e[6] = s; e[10] = c; e[14] = 0;
+ e[3] = 0; e[7] = 0; e[11] = 0; e[15] = 1;
+ } else if (0 === x && 0 !== y && 0 === z) {
+ // Rotation around Y axis
+ if (y < 0) {
+ s = -s;
+ }
+ e[0] = c; e[4] = 0; e[ 8] = s; e[12] = 0;
+ e[1] = 0; e[5] = 1; e[ 9] = 0; e[13] = 0;
+ e[2] =-s; e[6] = 0; e[10] = c; e[14] = 0;
+ e[3] = 0; e[7] = 0; e[11] = 0; e[15] = 1;
+ } else if (0 === x && 0 === y && 0 !== z) {
+ // Rotation around Z axis
+ if (z < 0) {
+ s = -s;
+ }
+ e[0] = c; e[4] =-s; e[ 8] = 0; e[12] = 0;
+ e[1] = s; e[5] = c; e[ 9] = 0; e[13] = 0;
+ e[2] = 0; e[6] = 0; e[10] = 1; e[14] = 0;
+ e[3] = 0; e[7] = 0; e[11] = 0; e[15] = 1;
+ } else {
+ // Rotation around another axis
+ len = Math.sqrt(x*x + y*y + z*z);
+ if (len !== 1) {
+ rlen = 1 / len;
+ x *= rlen;
+ y *= rlen;
+ z *= rlen;
+ }
+ nc = 1 - c;
+ xy = x * y;
+ yz = y * z;
+ zx = z * x;
+ xs = x * s;
+ ys = y * s;
+ zs = z * s;
+
+ e[ 0] = x*x*nc + c;
+ e[ 1] = xy *nc + zs;
+ e[ 2] = zx *nc - ys;
+ e[ 3] = 0;
+
+ e[ 4] = xy *nc - zs;
+ e[ 5] = y*y*nc + c;
+ e[ 6] = yz *nc + xs;
+ e[ 7] = 0;
+
+ e[ 8] = zx *nc + ys;
+ e[ 9] = yz *nc - xs;
+ e[10] = z*z*nc + c;
+ e[11] = 0;
+
+ e[12] = 0;
+ e[13] = 0;
+ e[14] = 0;
+ e[15] = 1;
+ }
+
+ return this;
+};
+
+/**
+ * Multiply the matrix for rotation from the right.
+ * The vector of rotation axis may not be normalized.
+ * @param angle The angle of rotation (degrees)
+ * @param x The X coordinate of vector of rotation axis.
+ * @param y The Y coordinate of vector of rotation axis.
+ * @param z The Z coordinate of vector of rotation axis.
+ * @return this
+ */
+Matrix4.prototype.rotate = function(angle, x, y, z) {
+ return this.concat(new Matrix4().setRotate(angle, x, y, z));
+};
+
+/**
+ * Set the viewing matrix.
+ * @param eyeX, eyeY, eyeZ The position of the eye point.
+ * @param centerX, centerY, centerZ The position of the reference point.
+ * @param upX, upY, upZ The direction of the up vector.
+ * @return this
+ */
+Matrix4.prototype.setLookAt = function(eyeX, eyeY, eyeZ, centerX, centerY, centerZ, upX, upY, upZ) {
+ var e, fx, fy, fz, rlf, sx, sy, sz, rls, ux, uy, uz;
+
+ fx = centerX - eyeX;
+ fy = centerY - eyeY;
+ fz = centerZ - eyeZ;
+
+ // Normalize f.
+ rlf = 1 / Math.sqrt(fx*fx + fy*fy + fz*fz);
+ fx *= rlf;
+ fy *= rlf;
+ fz *= rlf;
+
+ // Calculate cross product of f and up.
+ sx = fy * upZ - fz * upY;
+ sy = fz * upX - fx * upZ;
+ sz = fx * upY - fy * upX;
+
+ // Normalize s.
+ rls = 1 / Math.sqrt(sx*sx + sy*sy + sz*sz);
+ sx *= rls;
+ sy *= rls;
+ sz *= rls;
+
+ // Calculate cross product of s and f.
+ ux = sy * fz - sz * fy;
+ uy = sz * fx - sx * fz;
+ uz = sx * fy - sy * fx;
+
+ // Set to this.
+ e = this.elements;
+ e[0] = sx;
+ e[1] = ux;
+ e[2] = -fx;
+ e[3] = 0;
+
+ e[4] = sy;
+ e[5] = uy;
+ e[6] = -fy;
+ e[7] = 0;
+
+ e[8] = sz;
+ e[9] = uz;
+ e[10] = -fz;
+ e[11] = 0;
+
+ e[12] = 0;
+ e[13] = 0;
+ e[14] = 0;
+ e[15] = 1;
+
+ // Translate.
+ return this.translate(-eyeX, -eyeY, -eyeZ);
+};
+
+/**
+ * Multiply the viewing matrix from the right.
+ * @param eyeX, eyeY, eyeZ The position of the eye point.
+ * @param centerX, centerY, centerZ The position of the reference point.
+ * @param upX, upY, upZ The direction of the up vector.
+ * @return this
+ */
+Matrix4.prototype.lookAt = function(eyeX, eyeY, eyeZ, centerX, centerY, centerZ, upX, upY, upZ) {
+ return this.concat(new Matrix4().setLookAt(eyeX, eyeY, eyeZ, centerX, centerY, centerZ, upX, upY, upZ));
+};
+
+/**
+ * Multiply the matrix for project vertex to plane from the right.
+ * @param plane The array[A, B, C, D] of the equation of plane "Ax + By + Cz + D = 0".
+ * @param light The array which stored coordinates of the light. if light[3]=0, treated as parallel light.
+ * @return this
+ */
+Matrix4.prototype.dropShadow = function(plane, light) {
+ var mat = new Matrix4();
+ var e = mat.elements;
+
+ var dot = plane[0] * light[0] + plane[1] * light[1] + plane[2] * light[2] + plane[3] * light[3];
+
+ e[ 0] = dot - light[0] * plane[0];
+ e[ 1] = - light[1] * plane[0];
+ e[ 2] = - light[2] * plane[0];
+ e[ 3] = - light[3] * plane[0];
+
+ e[ 4] = - light[0] * plane[1];
+ e[ 5] = dot - light[1] * plane[1];
+ e[ 6] = - light[2] * plane[1];
+ e[ 7] = - light[3] * plane[1];
+
+ e[ 8] = - light[0] * plane[2];
+ e[ 9] = - light[1] * plane[2];
+ e[10] = dot - light[2] * plane[2];
+ e[11] = - light[3] * plane[2];
+
+ e[12] = - light[0] * plane[3];
+ e[13] = - light[1] * plane[3];
+ e[14] = - light[2] * plane[3];
+ e[15] = dot - light[3] * plane[3];
+
+ return this.concat(mat);
+}
+
+/**
+ * Multiply the matrix for project vertex to plane from the right.(Projected by parallel light.)
+ * @param normX, normY, normZ The normal vector of the plane.(Not necessary to be normalized.)
+ * @param planeX, planeY, planeZ The coordinate of arbitrary points on a plane.
+ * @param lightX, lightY, lightZ The vector of the direction of light.(Not necessary to be normalized.)
+ * @return this
+ */
+Matrix4.prototype.dropShadowDirectionally = function(normX, normY, normZ, planeX, planeY, planeZ, lightX, lightY, lightZ) {
+ var a = planeX * normX + planeY * normY + planeZ * normZ;
+ return this.dropShadow([normX, normY, normZ, -a], [lightX, lightY, lightZ, 0]);
+};
+
+/**
+ * Constructor of Vector3
+ * If opt_src is specified, new vector is initialized by opt_src.
+ * @param opt_src source vector(option)
+ */
+var Vector3 = function(opt_src) {
+ var v = new Float32Array(3);
+ if (opt_src && typeof opt_src === 'object') {
+ v[0] = opt_src[0]; v[1] = opt_src[1]; v[2] = opt_src[2];
+ }
+ this.elements = v;
+}
+
+/**
+ * Normalize.
+ * @return this
+ */
+Vector3.prototype.normalize = function() {
+ var v = this.elements;
+ var c = v[0], d = v[1], e = v[2], g = Math.sqrt(c*c+d*d+e*e);
+ if(g){
+ if(g == 1)
+ return this;
+ } else {
+ v[0] = 0; v[1] = 0; v[2] = 0;
+ return this;
+ }
+ g = 1/g;
+ v[0] = c*g; v[1] = d*g; v[2] = e*g;
+ return this;
+};
+
+/**
+ * Constructor of Vector4
+ * If opt_src is specified, new vector is initialized by opt_src.
+ * @param opt_src source vector(option)
+ */
+var Vector4 = function(opt_src) {
+ var v = new Float32Array(4);
+ if (opt_src && typeof opt_src === 'object') {
+ v[0] = opt_src[0]; v[1] = opt_src[1]; v[2] = opt_src[2]; v[3] = opt_src[3];
+ }
+ this.elements = v;
+}
diff --git a/lab4/src/lab4.html b/lab4/src/lab4.html
index 2bb37bc..4e1320d 100644
--- a/lab4/src/lab4.html
+++ b/lab4/src/lab4.html
@@ -5,12 +5,27 @@
<title>Lab 4</title>
</head>
<body onload="main()">
-<canvas width="400" height="600" id="my-canvas">
+<canvas width="700" height="800" id="my-canvas" style="float: left;">
Please use a browser that supports "canvas"
</canvas>
+<div style="float: left; margin-left: 15px;">
+ <p id="control" style="color: red;">Control on : directional light</p>
+ <p id="light_x">Light X : </p>
+ <p id="light_y">Light Y : </p>
+ <p id="light_z">Light Z : </p>
+ <p id="light_x_point">Light X : </p>
+ <p id="light_y_point">Light Y : </p>
+ <p id="light_z_point">Light Z : </p>
+</div>
+<script src="https://cdnjs.cloudflare.com/ajax/libs/gl-matrix/2.8.1/gl-matrix-min.js"
+ integrity="sha512-zhHQR0/H5SEBL3Wn6yYSaTTZej12z0hVZKOv3TwCUXT1z5qeqGcXJLLrbERYRScEDDpYIJhPC1fk31gqR783iQ=="
+ crossorigin="anonymous" defer>
+ </script>
<script src="../lib/webgl-utils.js"></script>
<script src="../lib/webgl-debug.js"></script>
<script src="../lib/cuon-utils.js"></script>
+<script src="../lib/cuon-matrix.js"></script>
+<script src="pyramidModel.js"></script>
<script src="lab4.js"></script>
</body>
</html>
\ No newline at end of file
diff --git a/lab4/src/lab4.js b/lab4/src/lab4.js
index 105a227..1ef5d8a 100644
--- a/lab4/src/lab4.js
+++ b/lab4/src/lab4.js
@@ -1,18 +1,589 @@
-// Vertex shader program
-const VSHADER_SOURCE =
- '\n' +
- // TODO: Implement your vertex shader code here
- '\n';
-
-// Fragment shader program
-const FSHADER_SOURCE =
- '\n' +
- // TODO: Implement your fragment shader code here
- '\n';
+/*
+ * Projet : Lab 4
+ * Auteur : Ottavio Buonomo
+ * Date : 04.12.2020
+ * Version : 1.0
+*/
+
+let x_coord_point = 0.0;
+let y_coord_point = 0.0;
+let z_coord_point = 1.5;
+
+let x_coord_direct = 1.0;
+let y_coord_direct = 3.0;
+let z_coord_direct = 5.0;
+
+let x_coord_cam = 0.0;
+let y_coord_cam = 6.0;
+let z_coord_cam = 20.0;
+
+let lightSelector = true
+
+let currentAngle = 0.0;
+
+var indices = new Uint8Array([
+ 0, 1, 2, 0, 2, 3, // front
+ 4, 5, 6, 4, 6, 7, // right
+ 8, 9, 10, 8, 10, 11, // up
+ 12, 13, 14, 12, 14, 15, // left
+ 16, 17, 18, 16, 18, 19, // down
+ 20, 21, 22, 20, 22, 23, // back
+]);
+
+var indicesGround = new Uint8Array([
+ 0, 1, 3, 0, 2, 3, // ground
+]);
+
+var OFFSCREEN_WIDTH = 2048, OFFSCREEN_HEIGHT = 2048;
+
+var SHADOW_VSHADER_SOURCE =
+ `
+ attribute vec4 a_Position;
+ uniform mat4 u_MvpMatrix;
+
+ void main() {
+ gl_Position = u_MvpMatrix * a_Position;
+ }`
+
+var SHADOW_FSHADER_SOURCE =
+ `
+ #ifdef GL_ES
+ precision mediump float;
+ #endif
+
+ void main() {
+ gl_FragColor = vec4(gl_FragCoord.z, 0.0, 0.0, 0.0);
+ }`
+
+var VSHADER_SOURCE =
+ `precision mediump float;
+ attribute vec4 a_Position;
+ attribute vec4 a_Color;
+ attribute vec4 a_Normal;
+ uniform mat4 u_MvpMatrix;
+ uniform mat4 u_ModelMatrix;
+ uniform mat4 u_NormalMatrix;
+ varying vec4 v_Color;
+ varying vec3 v_Normal;
+ varying vec3 v_Position;
+ uniform vec3 u_LightDirection;
+
+ uniform mat4 u_MvpMatrixFromLight;
+ varying vec4 v_PositionFromLight;
+
+ void main() {
+ gl_Position = u_MvpMatrix * a_Position;
+ v_PositionFromLight = vec4(u_MvpMatrixFromLight * a_Position);
+ v_Position = vec3(u_ModelMatrix * a_Position);
+ v_Normal = normalize(vec3(u_NormalMatrix * a_Normal));
+ v_Color = a_Color;
+ }`
+
+var FSHADER_SOURCE =
+ `#ifdef GL_ES
+ precision mediump float;
+ #endif
+ uniform vec3 u_LightColor;
+ uniform vec3 u_LightPosition;
+ uniform vec3 u_LightDirection;
+
+ uniform int u_SwitchLight;
+ uniform bool u_Picked;
+
+ varying vec3 v_Normal;
+ varying vec3 v_Position;
+ varying vec4 v_Color;
+
+ vec4 finalColor;
+ uniform vec3 u_AmbientLight;
+
+ uniform sampler2D u_ShadowMap;
+ varying vec4 v_PositionFromLight;
+
+ void main() {
+ vec3 shadowCoord = (v_PositionFromLight.xyz / v_PositionFromLight.w) / 2.0 + 0.5;
+ vec4 rgbaDepth = texture2D(u_ShadowMap, shadowCoord.xy);
+ float depth = rgbaDepth.r;
+ float visibility = (shadowCoord.z > depth + 0.005) ? 0.7 : 1.0;
+ vec3 normal = normalize(v_Normal);
+ vec3 lightDirection = normalize(u_LightPosition - v_Position);
+ float nDotL;
+ if (u_SwitchLight == 1) {
+ nDotL = max(dot(lightDirection, normal), 0.0);
+ } else {
+ nDotL = max(dot(u_LightDirection, normal), 0.0);;
+ }
+ vec3 diffuse = u_LightColor * v_Color.rgb * visibility * nDotL;
+ vec3 ambient = u_AmbientLight * v_Color.rgb;
+ if (u_Picked) {
+ finalColor = vec4(1.0, 0.0, 0.0, 1.0);
+ } else {
+ finalColor = vec4(diffuse + ambient, v_Color.a);
+ }
+ gl_FragColor = finalColor;
+ }`
+
+var OFFSCREEN_WIDTH = 2048, OFFSCREEN_HEIGHT = 2048;
+var LIGHT_X = 1, LIGHT_Y = 3, LIGHT_Z = 5;
function main() {
- // Retrieve <canvas> element
- const canvas = document.getElementById('my-canvas');
+ // Retrieve <canvas> element
+ var canvas = document.getElementById('my-canvas');
+
+ // Get the rendering context for WebGL
+ var gl = getWebGLContext(canvas);
+ if (!gl) {
+ console.log('Failed to get the rendering context for WebGL');
+ return;
+ }
+
+ // Contrôle de la caméra
+ document.addEventListener('keydown', e => {
+ switch (e.keyCode) {
+ case 16:
+ lightSelector = !lightSelector
+ gl.uniform1i(programInfo.uniformLocations.u_SwitchLight, !lightSelector)
+ document.getElementById("control").textContent = lightSelector ? "Control on (SHIFT) : directional" : "Control on (SHIFT) : point light"
+ break;
+ case 38: // Flèche haut
+ if (lightSelector) {
+ y_coord_direct += 0.1
+ } else {
+ y_coord_point += 0.1
+ }
+ break;
+ case 39: // Flèche droite
+ if (lightSelector) {
+ x_coord_direct += 0.1
+ } else {
+ x_coord_point += 0.1
+ }
+ break;
+ case 40: // Flèche bas
+ if (lightSelector) {
+ y_coord_direct -= 0.1
+ } else {
+ y_coord_point -= 0.1
+ }
+ break;
+ case 37: // Flèche gauche
+ if (lightSelector) {
+ x_coord_direct -= 0.1
+ } else {
+ x_coord_point -= 0.1
+ }
+ break;
+ case 87: // W
+ if (lightSelector) {
+ z_coord_direct -= 0.1
+ } else {
+ z_coord_point -= 0.1
+ }
+ break;
+ case 83: // S
+ if (lightSelector) {
+ z_coord_direct += 0.1
+ } else {
+ z_coord_point += 0.1
+ }
+ break;
+ case 65: // A
+ x_coord_cam -= 0.1
+ break;
+ case 68: // D
+ x_coord_cam += 0.1
+ break;
+ case 69: // E
+ y_coord_cam += 0.1
+ break;
+ case 81: // Q
+ y_coord_cam -= 0.1
+ break;
+ case 89: // Y
+ z_coord_cam -= 0.1
+ break;
+ case 67: // C
+ z_coord_cam += 0.1
+ break;
+ default:
+ break;
+ }
+ });
+
+ var shadowProgram = createProgram(gl, SHADOW_VSHADER_SOURCE, SHADOW_FSHADER_SOURCE);
+ const shadowProgramInfo = {
+ attributes: {
+ a_Position: gl.getAttribLocation(shadowProgram, 'a_Position')
+ },
+ uniformLocations: {
+ u_MvpMatrix: gl.getUniformLocation(shadowProgram, 'u_MvpMatrix')
+ }
+ }
+
+ var shapesProgram = createProgram(gl, VSHADER_SOURCE, FSHADER_SOURCE);
+ const programInfo = {
+ attributes: {
+ a_Position: gl.getAttribLocation(shapesProgram, 'a_Position'),
+ a_Color: gl.getAttribLocation(shapesProgram, 'a_Color'),
+ a_Normals: gl.getAttribLocation(shapesProgram, 'a_Normal'),
+ },
+ uniformLocations: {
+ u_ModelMatrix: gl.getUniformLocation(shapesProgram, 'u_ModelMatrix'),
+ u_MvpMatrix: gl.getUniformLocation(shapesProgram, 'u_MvpMatrix'),
+ u_NormalMatrix: gl.getUniformLocation(shapesProgram, 'u_NormalMatrix'),
+ u_LightColor: gl.getUniformLocation(shapesProgram, 'u_LightColor'),
+ u_LightPosition: gl.getUniformLocation(shapesProgram, 'u_LightPosition'),
+ u_LightDirection: gl.getUniformLocation(shapesProgram, 'u_LightDirection'),
+ u_SwitchLight: gl.getUniformLocation(shapesProgram, 'u_SwitchLight'),
+ u_Picked: gl.getUniformLocation(shapesProgram, 'u_Picked'),
+ u_AmbientLight: gl.getUniformLocation(shapesProgram, 'u_AmbientLight'),
+ u_MvpMatrixFromLight: gl.getUniformLocation(shapesProgram, 'u_MvpMatrixFromLight'),
+ u_ShadowMap: gl.getUniformLocation(shapesProgram, 'u_ShadowMap'),
+ }
+ }
+
+ var vertices = pyramid()
+ let normals = []
+ for (let i = 0; i < vertices.length - 12; i += 12) {
+ let n = normalizedCrossWith3Points(
+ vertices[i],
+ vertices[i + 1],
+ vertices[i + 2],
+ vertices[i + 3],
+ vertices[i + 4],
+ vertices[i + 5],
+ vertices[i + 6],
+ vertices[i + 7],
+ vertices[i + 8]
+ )
+ for (let j = 0; j < 4; j++) {
+ normals.push(n[0]);
+ normals.push(n[1]);
+ normals.push(n[2]);
+ }
+ }
+
+ var normalsGround = [0.0, 1.0, 0.0,
+ 0.0, 1.0, 0.0,
+ 0.0, 1.0, 0.0,
+ 0.0, 1.0, 0.0]
+
+ var ground = initVertexBuffersGround(gl, groundVertices(), groundColors(), indicesGround, new Float32Array(normalsGround));
+ var py = initVertexBuffersPyramid(gl, pyramid(), pyramidColors(), indices, new Float32Array(normals));
+
+ gl.clearColor(0.0, 0.0, 0.0, 1.0);
+ gl.enable(gl.DEPTH_TEST);
+
+ // var fbo = initFramebufferObject(gl);
+ // if (!fbo) {
+ // console.log('Failed to initialize frame buffer object');
+ // return;
+ // }
+
+ // gl.activeTexture(gl.TEXTURE0);
+ // gl.bindTexture(gl.TEXTURE_2D, fbo.texture);
+
+
+ gl.clearColor(0, 0, 0, 1);
+ gl.enable(gl.DEPTH_TEST);
+
+ var modelMatrix = new Matrix4();
+ var mvpMatrix = new Matrix4();
+ var normalMatrix = new Matrix4();
+ var viewPortMatrix = new Matrix4();
+
+ var viewPortLightMatrix = new Matrix4();
+ viewPortLightMatrix.setPerspective(70, OFFSCREEN_WIDTH/OFFSCREEN_HEIGHT, 1, 100);
+ viewPortLightMatrix.lookAt(LIGHT_X, LIGHT_Y, LIGHT_Z, 0, 0, 0, 0, 1, 0);
+
+ normalMatrix.setInverseOf(modelMatrix);
+ normalMatrix.transpose();
+
+ mvpMatrix.multiply(modelMatrix);
+
+ var picked = false;
+
+ canvas.onmousedown = function (ev) {
+ var oldValuePicked = picked
+ var x = ev.clientX
+ var y = ev.clientY
+ var rect = ev.target.getBoundingClientRect()
+ if (rect.left <= x && x < rect.right && rect.top <= y && y < rect.bottom) {
+ var xCanvas = x - rect.left
+ var yCanvas = rect.bottom - y
+ picked = check(gl, xCanvas, yCanvas, shapesProgram, programInfo, py, modelMatrix, viewPortMatrix, mvpMatrix, normalMatrix);
+ if (picked !== oldValuePicked) {
+ py = initVertexBuffersPyramid(gl, pyramid(), pyramidColors2(), indices, new Float32Array(normals));
+ runAnimation = true
+ } else {
+ py = initVertexBuffersPyramid(gl, pyramid(), pyramidColors(), indices, new Float32Array(normals));
+ picked = false
+ }
+ }
+ }
+
+ let runAnimation = false
+ var mvpMatrixFromLight_py = new Matrix4();
+ var mvpMatrixFromLight_gr = new Matrix4();
+ let render = () => {
+ if (runAnimation) {
+ currentAngle = animate(currentAngle);
+ }
+ if (Math.ceil(currentAngle) % 180 === 0) {
+ runAnimation = false
+ }
+ // gl.bindFramebuffer(gl.FRAMEBUFFER, fbo);
+ // gl.viewport(0, 0, OFFSCREEN_WIDTH, OFFSCREEN_HEIGHT);
+ // gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT);
+
+ // gl.useProgram(shadowProgram);
+ // drawHourglass(gl, shadowProgram, shadowProgramInfo, py, modelMatrix, viewPortLightMatrix, mvpMatrix, normalMatrix)
+ // mvpMatrixFromLight_py.set(mvpMatrix);
+ // drawGround(gl, shadowProgram, shadowProgramInfo, ground, modelMatrix, viewPortLightMatrix, mvpMatrix, normalMatrix)
+ // mvpMatrixFromLight_gr.set(mvpMatrix);
+
+ // gl.bindFramebuffer(gl.FRAMEBUFFER, null);
+ // gl.viewport(0, 0, canvas.width, canvas.height);
+ // gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT);
+
+
+ gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT);
+ gl.useProgram(shapesProgram)
+ gl.uniform1i(programInfo.uniformLocations.u_ShadowMap, 0);
+
+
+ viewPortMatrix.setPerspective(30, canvas.width / canvas.height, 1, 30);
+ viewPortMatrix.lookAt(x_coord_cam, y_coord_cam, z_coord_cam, 0, 0, 0, 0, 1, 0);
+
+ // gl.uniformMatrix4fv(programInfo.uniformLocations.u_MvpMatrixFromLight, false, mvpMatrixFromLight_py.elements);
+ drawHourglass(gl, shapesProgram, programInfo, py, modelMatrix, viewPortMatrix, mvpMatrix, normalMatrix, currentAngle)
+ // gl.uniformMatrix4fv(programInfo.uniformLocations.u_MvpMatrixFromLight, false, mvpMatrixFromLight_gr.elements);
+ drawGround(gl, shapesProgram, programInfo, ground, modelMatrix, viewPortMatrix, mvpMatrix, normalMatrix)
+ requestAnimationFrame(render)
+ }
+ requestAnimationFrame(render)
+}
+
+function check(gl, x, y, prg, programInfo, buffer, modelMatrix, viewPortMatrix, mvpMatrix, normalMatrix) {
+ var picked = false;
+ gl.uniform1i(programInfo.uniformLocations.u_Picked, 1);
+ drawHourglass(gl, prg, programInfo, buffer, modelMatrix, mvpMatrix, viewPortMatrix, normalMatrix, currentAngle)
+ var pixels = new Uint8Array(4);
+ gl.readPixels(x, y, 1, 1, gl.RGBA, gl.UNSIGNED_BYTE, pixels);
+ if (pixels[0] == 255) {
+ picked = true;
+ }
+ gl.uniform1i(programInfo.uniformLocations.u_Picked, 0);
+ drawHourglass(gl, prg, programInfo, buffer, modelMatrix, mvpMatrix, viewPortMatrix, normalMatrix, currentAngle)
+ return picked;
+}
+
+function drawHourglass(gl, prg, programInfo, py, modelMatrix, viewPortMatrix, mvpMatrix, normalMatrix, angle) {
+ // Bas
+ modelMatrix.setRotate(0 + angle, 0, 0, 1);
+ modelMatrix.translate(0.0, -1.5, 0.0);
+ mvpMatrix.set(viewPortMatrix).multiply(modelMatrix);
+ normalMatrix.rotate(0, 0, 0, 1);
+ normalMatrix.setInverseOf(modelMatrix);
+ normalMatrix.transpose();
+ draw(gl, prg, programInfo, py, modelMatrix, mvpMatrix, viewPortMatrix, normalMatrix)
+
+ // Haut
+ modelMatrix.setRotate(180 + angle, 0, 0, 1);
+ modelMatrix.translate(0, -1.5, 0);
+ mvpMatrix.set(viewPortMatrix).multiply(modelMatrix);
+ normalMatrix.rotate(180, 0, 0, 1);
+ normalMatrix.transpose();
+ draw(gl, prg, programInfo, py, modelMatrix, mvpMatrix, viewPortMatrix, normalMatrix)
+}
+
+function drawGround(gl, prg, programInfo, ground, modelMatrix, viewPortMatrix, mvpMatrix, normalMatrix) {
+ modelMatrix.setRotate(0, 0, 0, 1);
+ modelMatrix.translate(0, -2.0, 0);
+ mvpMatrix.set(viewPortMatrix).multiply(modelMatrix);
+ normalMatrix.rotate(180, 0, 0, 1);
+ normalMatrix.transpose();
+ draw(gl, prg, programInfo, ground, modelMatrix, mvpMatrix, viewPortMatrix, normalMatrix)
+}
+
+function draw(gl, prg, program, o, modelMatrix, mvpMatrix, viewPortMatrix, normalMatrix) {
+ initAttributeVariable(gl, program.attributes.a_Position, o.vertexBuffer);
+ initAttributeVariable(gl, program.attributes.a_Color, o.colorBuffer);
+ initAttributeVariable(gl, program.attributes.a_Normals, o.normalsBuffer);
+
+ gl.bindBuffer(gl.ELEMENT_ARRAY_BUFFER, o.indexBuffer);
+
+ mvpMatrix.set(viewPortMatrix).multiply(modelMatrix);
+ // Lights
+ gl.uniform3f(program.uniformLocations.u_AmbientLight, 0.5, 0.5, 0.5);
+ gl.uniform3f(program.uniformLocations.u_LightColor, 1.0, 1.0, 1.0); // Light color
+ gl.uniform3f(program.uniformLocations.u_LightPosition, x_coord_point, y_coord_point, z_coord_point);
+
+ // var lightDirection = new Vector3([x_coord_direct, y_coord_direct, z_coord_direct]);
+ // lightDirection.normalize(); // Normalize
+ // gl.uniform3fv(program.uniformLocations.u_LightDirection, lightDirection.elements);
+
+ if (gl.getUniform(prg, program.uniformLocations.u_SwitchLight.valueOf()) === 1) {
+ gl.uniform3f(program.uniformLocations.u_LightPosition, x_coord_point, y_coord_point, z_coord_point);
+ } else {
+ var lightDirection = new Vector3([x_coord_direct, y_coord_direct, z_coord_direct]);
+ lightDirection.normalize(); // Normalize
+ gl.uniform3fv(program.uniformLocations.u_LightDirection, lightDirection.elements);
+ }
+
+ document.getElementById("light_x").textContent = "Light X directionnelle : " + x_coord_direct
+ document.getElementById("light_y").textContent = "Light Y directionnelle : " + y_coord_direct
+ document.getElementById("light_z").textContent = "Light Z directionnelle : " + z_coord_direct
+
+ document.getElementById("light_x_point").textContent = "Light X ponctuelle : " + x_coord_point
+ document.getElementById("light_y_point").textContent = "Light Y ponctuelle : " + y_coord_point
+ document.getElementById("light_z_point").textContent = "Light Z ponctuelle : " + z_coord_point
+
+
+ gl.uniformMatrix4fv(program.uniformLocations.u_MvpMatrix, false, mvpMatrix.elements);
+ gl.uniformMatrix4fv(program.uniformLocations.u_ModelMatrix, false, modelMatrix.elements);
+ gl.uniformMatrix4fv(program.uniformLocations.u_NormalMatrix, false, normalMatrix.elements);
+
+ gl.drawElements(gl.TRIANGLES, o.numIndices, gl.UNSIGNED_BYTE, 0);
+}
+
+function initAttributeVariable(gl, a_attribute, buffer) {
+ gl.bindBuffer(gl.ARRAY_BUFFER, buffer);
+ gl.vertexAttribPointer(a_attribute, buffer.num, buffer.type, false, 0, 0);
+ gl.enableVertexAttribArray(a_attribute);
+}
+
+function initVertexBuffersGround(gl, vertices, colors, indices, normals) {
+ var g = new Object()
+ g.vertexBuffer = initBuffer(gl, vertices, 3, gl.FLOAT);
+ g.colorBuffer = initBuffer(gl, colors, 3, gl.FLOAT);
+ g.normalsBuffer = initBuffer(gl, normals, 3, gl.FLOAT);
+ g.indexBuffer = initElementArrayBuffer(gl, indices, gl.UNSIGNED_BYTE);
+ if (!g.vertexBuffer || !g.colorBuffer || !g.indexBuffer)
+ return null;
+
+ g.numIndices = indices.length;
+ gl.bindBuffer(gl.ARRAY_BUFFER, null);
+ gl.bindBuffer(gl.ELEMENT_ARRAY_BUFFER, null);
+
+ return g;
+}
+
+function initVertexBuffersPyramid(gl, vertices, colors, indices, normals) {
+ var p = new Object()
+ p.vertexBuffer = initBuffer(gl, vertices, 3, gl.FLOAT);
+ p.colorBuffer = initBuffer(gl, colors, 3, gl.FLOAT);
+ p.normalsBuffer = initBuffer(gl, normals, 3, gl.FLOAT);
+ p.indexBuffer = initElementArrayBuffer(gl, indices, gl.UNSIGNED_BYTE);
+ if (!p.vertexBuffer || !p.colorBuffer || !p.indexBuffer)
+ return null;
+
+ p.numIndices = indices.length;
+ gl.bindBuffer(gl.ARRAY_BUFFER, null);
+ gl.bindBuffer(gl.ELEMENT_ARRAY_BUFFER, null);
+
+ return p;
+}
+
+function initBuffer(gl, data, num, type) {
+ var buffer = gl.createBuffer();
+ if (!buffer) {
+ console.log('Failed to create the buffer object');
+ return null;
+ }
+
+ gl.bindBuffer(gl.ARRAY_BUFFER, buffer);
+ gl.bufferData(gl.ARRAY_BUFFER, data, gl.STATIC_DRAW);
+ buffer.num = num;
+ buffer.type = type;
+
+ return buffer;
+}
+
+function initElementArrayBuffer(gl, data, type) {
+ var buffer = gl.createBuffer();
+ if (!buffer) {
+ console.log('Failed to create the buffer object');
+ return null;
+ }
+
+ gl.bindBuffer(gl.ELEMENT_ARRAY_BUFFER, buffer);
+ gl.bufferData(gl.ELEMENT_ARRAY_BUFFER, data, gl.STATIC_DRAW);
+ buffer.type = type;
+
+ return buffer;
+}
+
+function normalizedCrossWith3Points(a0, a1, a2, b0, b1, b2, c0, c1, c2) {
+ const x = 0;
+ const y = 1;
+ const z = 2;
+
+ const u = [b0 - a0, b1 - a1, b2 - a2];
+ const v = [c0 - a0, c1 - a1, c2 - a2];
+ return [
+ u[y] * v[z] - u[z] * v[y],
+ u[z] * v[x] - u[x] * v[z],
+ u[x] * v[y] - u[y] * v[x]
+ ];
+}
+
+const ANGLE_STEP = 40;
+const SPEED = 50;
+
+function animate(angle) {
+ var newAngle = angle + (ANGLE_STEP * SPEED) / 1000.0;
+ return newAngle % 360;
+}
- // TODO: Complete with your code here
-}
\ No newline at end of file
+function initFramebufferObject(gl) {
+ var framebuffer, texture, depthBuffer;
+
+ var error = function() {
+ if (framebuffer) gl.deleteFramebuffer(framebuffer);
+ if (texture) gl.deleteTexture(texture);
+ if (depthBuffer) gl.deleteRenderbuffer(depthBuffer);
+ return null;
+ }
+
+ framebuffer = gl.createFramebuffer();
+ if (!framebuffer) {
+ console.log('Failed to create frame buffer object');
+ return error();
+ }
+
+ texture = gl.createTexture();
+ if (!texture) {
+ console.log('Failed to create texture object');
+ return error();
+ }
+ gl.bindTexture(gl.TEXTURE_2D, texture);
+ gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, OFFSCREEN_WIDTH, OFFSCREEN_HEIGHT, 0, gl.RGBA, gl.UNSIGNED_BYTE, null);
+ gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR);
+
+ depthBuffer = gl.createRenderbuffer();
+ if (!depthBuffer) {
+ console.log('Failed to create renderbuffer object');
+ return error();
+ }
+ gl.bindRenderbuffer(gl.RENDERBUFFER, depthBuffer);
+ gl.renderbufferStorage(gl.RENDERBUFFER, gl.DEPTH_COMPONENT16, OFFSCREEN_WIDTH, OFFSCREEN_HEIGHT);
+
+ gl.bindFramebuffer(gl.FRAMEBUFFER, framebuffer);
+ gl.framebufferTexture2D(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.TEXTURE_2D, texture, 0);
+ gl.framebufferRenderbuffer(gl.FRAMEBUFFER, gl.DEPTH_ATTACHMENT, gl.RENDERBUFFER, depthBuffer);
+
+ var e = gl.checkFramebufferStatus(gl.FRAMEBUFFER);
+ if (gl.FRAMEBUFFER_COMPLETE !== e) {
+ console.log('Frame buffer object is incomplete: ' + e.toString());
+ return error();
+ }
+
+ framebuffer.texture = texture;
+
+ gl.bindFramebuffer(gl.FRAMEBUFFER, null);
+ gl.bindTexture(gl.TEXTURE_2D, null);
+ gl.bindRenderbuffer(gl.RENDERBUFFER, null);
+
+ return framebuffer;
+ }
\ No newline at end of file
diff --git a/lab4/src/pyramidModel.js b/lab4/src/pyramidModel.js
new file mode 100644
index 0000000..73188cf
--- /dev/null
+++ b/lab4/src/pyramidModel.js
@@ -0,0 +1,90 @@
+let pyramid = () => {
+ return new Float32Array([
+
+ // Devant
+ -1.5, -1.5, 1.5,
+ 1.5, -1.5, 1.5,
+ 0.75, 1.5, 0.75,
+ -0.75, 1.5, 0.75,
+
+ // Derrière
+ -1.5, -1.5, -1.5,
+ -0.75, 1.5, -0.75,
+ 0.75, 1.5, -0.75,
+ 1.5, -1.5, -1.5,
+
+ // Haut
+ -0.75, 1.5, -0.75,
+ -0.75, 1.5, 0.75,
+ 0.75, 1.5, 0.75,
+ 0.75, 1.5, -0.75,
+
+ // Bas
+ -1.5, -1.5, -1.5,
+ 1.5, -1.5, -1.5,
+ 1.5, -1.5, 1.5,
+ -1.5, -1.5, 1.5,
+
+ // Droite
+ 1.5, -1.5, -1.5,
+ 0.75, 1.5, -0.75,
+ 0.75, 1.5, 0.75,
+ 1.5, -1.5, 1.5,
+
+ // Gauche
+ -1.5, -1.5, -1.5,
+ -1.5, -1.5, 1.5,
+ -0.75, 1.5, 0.75,
+ -0.75, 1.5, -0.75,
+
+ -6.0, -1.5, 6.0, // Bas gauche
+ -6.0, -1.5, -6.0, // Haut gauche
+ 6.0, -1.5, 6.0, // Bas droite
+ 6.0, -1.5, -6.0, // Haut droite
+ ])
+}
+
+let groundVertices = () => {
+ return new Float32Array([
+ -6.0, -1.5, 6.0, // Bas gauche
+ -6.0, -1.5, -6.0, // Haut gauche
+ 6.0, -1.5, 6.0, // Bas droite
+ 6.0, -1.5, -6.0, // Haut droite
+ ])
+}
+
+let pyramidColors = () => {
+ return new Float32Array([
+ 0.5, 0.5, 1.0, 0.5, 0.5, 1.0, 0.5, 0.5, 1.0, 0.5, 0.5, 1.0,
+ 0.5, 0.5, 1.0, 0.5, 0.5, 1.0, 0.5, 0.5, 1.0, 0.5, 0.5, 1.0,
+ 0.5, 0.5, 1.0, 0.5, 0.5, 1.0, 0.5, 0.5, 1.0, 0.5, 0.5, 1.0,
+ 0.5, 0.5, 1.0, 0.5, 0.5, 1.0, 0.5, 0.5, 1.0, 0.5, 0.5, 1.0,
+ 0.5, 0.5, 1.0, 0.5, 0.5, 1.0, 0.5, 0.5, 1.0, 0.5, 0.5, 1.0,
+ 0.5, 0.5, 1.0, 0.5, 0.5, 1.0, 0.5, 0.5, 1.0, 0.5, 0.5, 1.0,
+ 0.5, 0.5, 1.0, 0.5, 0.5, 1.0, 0.5, 0.5, 1.0, 0.5, 0.5, 1.0,
+ ]);
+}
+
+let groundColors = () => {
+ return new Float32Array([
+ 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0,
+ 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0,
+ 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0,
+ 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0,
+ 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0,
+ 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0,
+ 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0,
+ ]);
+}
+
+let pyramidColors2 = () => {
+ return new Float32Array([
+ 0.5, 1.0, 0.5, 0.5, 1.0, 0.5, 0.5, 1.0, 0.5, 0.5, 1.0, 0.5,
+ 0.5, 1.0, 0.5, 0.5, 1.0, 0.5, 0.5, 1.0, 0.5, 0.5, 1.0, 0.5,
+ 0.5, 1.0, 0.5, 0.5, 1.0, 0.5, 0.5, 1.0, 0.5, 0.5, 1.0, 0.5,
+ 0.5, 1.0, 0.5, 0.5, 1.0, 0.5, 0.5, 1.0, 0.5, 0.5, 1.0, 0.5,
+ 0.5, 1.0, 0.5, 0.5, 1.0, 0.5, 0.5, 1.0, 0.5, 0.5, 1.0, 0.5,
+ 0.5, 1.0, 0.5, 0.5, 1.0, 0.5, 0.5, 1.0, 0.5, 0.5, 1.0, 0.5,
+ 0.5, 1.0, 0.5, 0.5, 1.0, 0.5, 0.5, 1.0, 0.5, 0.5, 1.0, 0.5,
+ ]);
+}
\ No newline at end of file
--
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