diff options
Diffstat (limited to 'manuals/chickadee/Matrices.html')
| -rw-r--r-- | manuals/chickadee/Matrices.html | 51 |
1 files changed, 49 insertions, 2 deletions
diff --git a/manuals/chickadee/Matrices.html b/manuals/chickadee/Matrices.html index 551664d..354a9ef 100644 --- a/manuals/chickadee/Matrices.html +++ b/manuals/chickadee/Matrices.html @@ -132,6 +132,16 @@ equivalent to the following code: </p></dd></dl> <dl> +<dt id="index-matrix3_003d">Procedure: <strong>matrix3=</strong> <em>m1 m2</em></dt> +<dd><p>Return <code>#t</code> if <var>m1</var> is the same matrix as <var>m2</var>. +</p></dd></dl> + +<dl> +<dt id="index-matrix3_002dcopy">Procedure: <strong>matrix3-copy</strong> <em>matrix</em></dt> +<dd><p>Return a new 3x3 matrix that is a copy of <var>matrix</var>. +</p></dd></dl> + +<dl> <dt id="index-matrix3_002a">Procedure: <strong>matrix3*</strong> <em>. matrices</em></dt> <dd><p>Return a new 3x3 matrix containing the product of multiplying all of the given <var>matrices</var>. @@ -172,6 +182,11 @@ matrix <var>matrix</var>. matrix objects: </p> <dl> +<dt id="index-matrix3_002dcopy_0021">Procedure: <strong>matrix3-copy!</strong> <em>src dest</em></dt> +<dd><p>Copy the contents of matrix <var>src</var> to <var>dest</var>. +</p></dd></dl> + +<dl> <dt id="index-matrix3_002didentity_0021">Procedure: <strong>matrix3-identity!</strong> <em>matrix</em></dt> <dd><p>Modify <var>matrix</var> in-place to contain the identity matrix. </p></dd></dl> @@ -247,6 +262,16 @@ equivalent to the following code: </p></dd></dl> <dl> +<dt id="index-matrix4_003d">Procedure: <strong>matrix4=</strong> <em>m1 m2</em></dt> +<dd><p>Return <code>#t</code> if <var>m1</var> is the same matrix as <var>m2</var>. +</p></dd></dl> + +<dl> +<dt id="index-matrix4_002dcopy">Procedure: <strong>matrix4-copy</strong> <em>matrix</em></dt> +<dd><p>Return a new 4x4 matrix that is a copy of <var>matrix</var>. +</p></dd></dl> + +<dl> <dt id="index-matrix4_002a">Procedure: <strong>matrix4*</strong> <em>. matrices</em></dt> <dd><p>Return a new 4x4 matrix containing the product of multiplying all of the given <var>matrices</var>. @@ -255,6 +280,14 @@ the given <var>matrices</var>. </p></dd></dl> <dl> +<dt id="index-matrix4_002dinverse">Procedure: <strong>matrix4-inverse</strong> <em>matrix</em></dt> +<dd><p>Return the inverse of <var>matrix</var>. +</p> +<p>A matrix multiplied by its inverse is the identity matrix, thought not +always exactly due to the nature of floating point numbers. +</p></dd></dl> + +<dl> <dt id="index-orthographic_002dprojection">Procedure: <strong>orthographic-projection</strong> <em>left right top bottom near far</em></dt> <dd> <p>Return a new 4x4 matrix that represents an orthographic (2D) @@ -297,6 +330,14 @@ axis defined by the quaternion <var>q</var>. <var>theta</var> radians. </p></dd></dl> +<p>The following procedures perform in-place, destructive updates to 4x4 +matrix objects: +</p> +<dl> +<dt id="index-matrix4_002dcopy_0021">Procedure: <strong>matrix4-copy!</strong> <em>src dest</em></dt> +<dd><p>Copy the contents of matrix <var>src</var> to <var>dest</var>. +</p></dd></dl> + <dl> <dt id="index-matrix4_002didentity_0021">Procedure: <strong>matrix4-identity!</strong> <em>matrix</em></dt> <dd><p>Modify <var>matrix</var> in-place to contain the identity matrix. @@ -309,6 +350,12 @@ the result in the 4x4 matrix <var>dest</var>. </p></dd></dl> <dl> +<dt id="index-matrix4_002dinverse_0021">Procedure: <strong>matrix4-inverse!</strong> <em>matrix target</em></dt> +<dd><p>Compute the inverse of <var>matrix</var> and store the result in +<var>target</var>. +</p></dd></dl> + +<dl> <dt id="index-matrix4_002dtranslate_0021">Procedure: <strong>matrix4-translate!</strong> <em>matrix x</em></dt> <dd><p>Modify <var>matrix</var> in-place to contain a translation by <var>x</var>, a 2D vector, a 3D vector, or a rectangle (in which case the bottom-left @@ -334,12 +381,12 @@ axis defined by the quaternion <var>q</var>. </p></dd></dl> <dl> -<dt id="index-matrix4_002d2d_002dtransform_0021">Procedure: <strong>matrix4-2d-transform!</strong> <em>matrix [#:origin] [#:position] [#:rotation] [#:scale] [#:skew]</em></dt> +<dt id="index-matrix4_002d2d_002dtransform_0021">Procedure: <strong>matrix4-2d-transform!</strong> <em>matrix [#:origin] [#:position] [#:rotation] [#:scale] [#:shear]</em></dt> <dd> <p>Modify <var>matrix</var> in-place to contain the transformation described by <var>position</var>, a 2D vector or rectangle, <var>rotation</var>, a scalar representing a rotation about the Z axis, <var>scale</var>, a 2D vector, -and <var>skew</var>, a 2D vector. The transformation happens with respect +and <var>shear</var>, a 2D vector. The transformation happens with respect to <var>origin</var>, a 2D vector. If an argument is not provided, that particular transformation will not be included in the result. </p></dd></dl> |