113 lines
3.2 KiB
JavaScript
113 lines
3.2 KiB
JavaScript
goog.provide('ol.vec.Mat4');
|
|
|
|
goog.require('goog.vec.Mat4');
|
|
|
|
|
|
/**
|
|
* @param {!goog.vec.Mat4.Float32} matrix Matrix.
|
|
* @param {number} value Brightness value.
|
|
* @return {!goog.vec.Mat4.Float32} Matrix.
|
|
*/
|
|
ol.vec.Mat4.makeBrightness = function(matrix, value) {
|
|
goog.vec.Mat4.makeTranslate(matrix, value, value, value);
|
|
return matrix;
|
|
};
|
|
|
|
|
|
/**
|
|
* @param {!goog.vec.Mat4.Float32} matrix Matrix.
|
|
* @param {number} value Contrast value.
|
|
* @return {!goog.vec.Mat4.Float32} Matrix.
|
|
*/
|
|
ol.vec.Mat4.makeContrast = function(matrix, value) {
|
|
goog.vec.Mat4.makeScale(matrix, value, value, value);
|
|
var translateValue = (-0.5 * value + 0.5);
|
|
goog.vec.Mat4.setColumnValues(matrix, 3,
|
|
translateValue, translateValue, translateValue, 1);
|
|
return matrix;
|
|
};
|
|
|
|
|
|
/**
|
|
* @param {!goog.vec.Mat4.Float32} matrix Matrix.
|
|
* @param {number} value Hue value.
|
|
* @return {!goog.vec.Mat4.Float32} Matrix.
|
|
*/
|
|
ol.vec.Mat4.makeHue = function(matrix, value) {
|
|
var cosHue = Math.cos(value);
|
|
var sinHue = Math.sin(value);
|
|
var v00 = 0.213 + cosHue * 0.787 - sinHue * 0.213;
|
|
var v01 = 0.715 - cosHue * 0.715 - sinHue * 0.715;
|
|
var v02 = 0.072 - cosHue * 0.072 + sinHue * 0.928;
|
|
var v03 = 0;
|
|
var v10 = 0.213 - cosHue * 0.213 + sinHue * 0.143;
|
|
var v11 = 0.715 + cosHue * 0.285 + sinHue * 0.140;
|
|
var v12 = 0.072 - cosHue * 0.072 - sinHue * 0.283;
|
|
var v13 = 0;
|
|
var v20 = 0.213 - cosHue * 0.213 - sinHue * 0.787;
|
|
var v21 = 0.715 - cosHue * 0.715 + sinHue * 0.715;
|
|
var v22 = 0.072 + cosHue * 0.928 + sinHue * 0.072;
|
|
var v23 = 0;
|
|
var v30 = 0;
|
|
var v31 = 0;
|
|
var v32 = 0;
|
|
var v33 = 1;
|
|
goog.vec.Mat4.setFromValues(matrix,
|
|
v00, v10, v20, v30,
|
|
v01, v11, v21, v31,
|
|
v02, v12, v22, v32,
|
|
v03, v13, v23, v33);
|
|
return matrix;
|
|
};
|
|
|
|
|
|
/**
|
|
* @param {!goog.vec.Mat4.Float32} matrix Matrix.
|
|
* @param {number} value Saturation value.
|
|
* @return {!goog.vec.Mat4.Float32} Matrix.
|
|
*/
|
|
ol.vec.Mat4.makeSaturation = function(matrix, value) {
|
|
var v00 = 0.213 + 0.787 * value;
|
|
var v01 = 0.715 - 0.715 * value;
|
|
var v02 = 0.072 - 0.072 * value;
|
|
var v03 = 0;
|
|
var v10 = 0.213 - 0.213 * value;
|
|
var v11 = 0.715 + 0.285 * value;
|
|
var v12 = 0.072 - 0.072 * value;
|
|
var v13 = 0;
|
|
var v20 = 0.213 - 0.213 * value;
|
|
var v21 = 0.715 - 0.715 * value;
|
|
var v22 = 0.072 + 0.928 * value;
|
|
var v23 = 0;
|
|
var v30 = 0;
|
|
var v31 = 0;
|
|
var v32 = 0;
|
|
var v33 = 1;
|
|
goog.vec.Mat4.setFromValues(matrix,
|
|
v00, v10, v20, v30,
|
|
v01, v11, v21, v31,
|
|
v02, v12, v22, v32,
|
|
v03, v13, v23, v33);
|
|
return matrix;
|
|
};
|
|
|
|
|
|
/**
|
|
* Transforms the given vector with the given matrix storing the resulting,
|
|
* transformed vector into resultVec. The input vector is multiplied against the
|
|
* upper 2x4 matrix omitting the projective component.
|
|
*
|
|
* @param {goog.vec.Mat4.AnyType} mat The matrix supplying the transformation.
|
|
* @param {Array.<number>} vec The 3 element vector to transform.
|
|
* @param {Array.<number>} resultVec The 3 element vector to receive the results
|
|
* (may be vec).
|
|
* @return {Array.<number>} return resultVec so that operations can be
|
|
* chained together.
|
|
*/
|
|
ol.vec.Mat4.multVec2 = function(mat, vec, resultVec) {
|
|
var x = vec[0], y = vec[1];
|
|
resultVec[0] = x * mat[0] + y * mat[4] + mat[12];
|
|
resultVec[1] = x * mat[1] + y * mat[5] + mat[13];
|
|
return resultVec;
|
|
};
|